By Topic

Wireless Communication Systems, 2004, 1st International Symposium on

Date 20-22 Sept. 2004

Filter Results

Displaying Results 1 - 25 of 94
  • [Front matter]

    Publication Year: 2004 , Page(s): 0_1 - 0_20
    Save to Project icon | Request Permissions | PDF file iconPDF (913 KB)  
    Freely Available from IEEE
  • The effect of single-antenna interference cancellation on GPRS performance

    Publication Year: 2004 , Page(s): 1 - 5
    Cited by:  Papers (5)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (636 KB) |  | HTML iconHTML  

    Single antenna interference cancellation (SAIC) is a very interesting and promising technology currently being standardized in 3GPP as part of GERAN Release 6. It is based on the latest developments in advanced receiver design. In the most advantageous interference conditions, SAIC can improve the signal-to-noise ratio over 10 dB. In this paper, we report on a study of the effect of SAIC on the capacity of a typical GSM network in terms of GPRS data throughput. Our results verify that SAIC provides a significant increase in network capacity not only for speech traffic but also for GPRS data traffic. Since current SAIC receiver algorithms are generally optimized for GMSK modulated signals, we were also interested in the proportion of GMSK and 8-PSK signals in a typical GSM network with EDGE data traffic. We found that in the case of a typical distribution of speech, GPRS and EGPRS traffic, the proportion of 8-PSK signals is relatively small. We can therefore expect that EDGE will not significantly diminish the effectiveness of SAIC in GSM networks. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An iterative frequency-domain decision feedback receiver for CDMA systems

    Publication Year: 2004 , Page(s): 6 - 10
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (635 KB) |  | HTML iconHTML  

    Unless high-complexity receiver structures are employed, conventional DS-CDMA (direct sequence code division multiple access) schemes can have a poor performance in severe time-dispersive channels, since the orthogonality between the users is lost. In this paper, we propose an iterative frequency-domain decision feedback equalizer for the downlink transmission within DS-CDMA systems employing block-transmission techniques, with an appropriate cyclic extension appended to each block. Our performance results show that the proposed receiver structure has excellent performance, close to the single-user MFB (matched filter bound), even for severe time-dispersive scenarios and/or in the presence of strong interfering channels. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An MC-CDMA signal equalization and detection scheme based on support vector machines

    Publication Year: 2004 , Page(s): 11 - 15
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (513 KB) |  | HTML iconHTML  

    In this paper, we propose a novel nonlinear signal equalization and detection scheme applying the support vector machine (SVM) technique for downlink multicarrier code division multiple access (MC-CDMA) systems. The SVM is gaining popularity in the field of pattern classification due to its promising empirical performance, moderate computation complexity and its strong mathematical foundation. In the proposed scheme, the SVM-based equalizer is trained with the frequency domain received signal for the implicit frequency diversity effect. Simulations are conducted under time-varying multipath fading channel to verify the effectiveness of the proposed scheme in the presence of multiuser interference (MUI) and inter-channel interference (ICI), two major impairments that severely degrade the performance of MC-CDMA systems employing conventional linear equalizers. Simulation results confirmed that the proposed scheme effectively mitigates MUI and ICI and outperforms conventional linear equalizers with perfect channel estimation. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multi-standard simulation of WLAN/UMTS/GSM transceivers for analog front-end validation and design

    Publication Year: 2004 , Page(s): 16 - 20
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (616 KB) |  | HTML iconHTML  

    A system-level multi-standard simulator is set up to help the architectural and circuit-level design of RF front-ends whose building blocks are meant to be shared between transceiver chains of different standards. The simulator distinguishes the baseband digital processing and analog processing. Non idealities of analog blocks are modeled in detail taking into account the nonlinearities, band limitation, losses, thermal noise, etc. The simulator provides all classical compliance tests (sensitivity, maximum input, adjacent channel rejection, pureness of modulation, spectral profile, etc.) and can also assess the joint effect of high-level analog design parameters on the performance of the transmission chain at bit- or packet- level. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Speed effect on the link level performance of a multi node B enhanced UTRAN architecture

    Publication Year: 2004 , Page(s): 21 - 25
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (625 KB) |  | HTML iconHTML  

    Future mobile communication requires not only increased bit rates but also flexible architectures, which could put the required resources where they are needed. In recent years, research on diversity techniques, smart antennas and beam forming algorithms have unveiled the potential of these techniques. The aim of this paper is to present and describe the multi node B (MNB) architecture, which could facilitate the controlled and concurrent operation of a number of these techniques in a flexible manner. This paper analyses the link level performance of the proposed architecture compared with the existing STTD (space time transmit diversity) technique already contemplated by the 3GPP standards and highlights further improvements which could be obtained by the proposed architecture. Finally, a detailed speed effect analysis is carried out for the outdoor to indoor and pedestrian test environment. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Decision feedback equalization for a single carrier system with frequency domain equalization - an overall system approach

    Publication Year: 2004 , Page(s): 26 - 30
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (624 KB) |  | HTML iconHTML  

    The wireless radio channel makes powerful equalization structures necessary, where in particular non linear structures such as decision feedback equalizers are promising candidates. Although the theory of these equalizers seems to be well developed, it is pointed out in this paper that it is inevitable to characterize them in an overall system approach which includes processing complexity, channel characteristics, error propagation, modulation schemes, channel coding and others before comparing them to linear equalizer structures. To reduce the signal processing complexity, our investigations are based on a single carrier system with frequency domain equalization (SC/FDE) which carries out the feed-forward equalization in the frequency domain. Furthermore, the specific structure of SC/FDE allows a better performance as compared to the classical DFE equalizer structures by reducing the effect of error propagation. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis of correlation between Ricean K-factor and vegetation density surrounding a CDMA mobile terminal

    Publication Year: 2004 , Page(s): 31 - 35
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (798 KB) |  | HTML iconHTML  

    In this paper, the propagation measurements obtained by utilising the IS-95 pilot signal of a commercial CDMA mobile network in rural Australia are analysed regarding the small-scale fading characteristics. It is shown that for this environment, the characteristics can be described by the Ricean distribution, where the X-factor correlates with the clutter density in the vicinity of the mobile receiving antenna. The Ricean K-factor indicates the small-scale fading margin required in a link budget calculation scenario, where pessimistic modelling, assuming Rayleigh fading, would lead to unnecessary high base station transmitter power and possible interference problems. This analysis correlates the vegetation density variations near the mobile receiving antenna to the Ricean K-factor enabling the prediction of the small-scale fading characteristics. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A study of shadowing on indoor visible-light wireless communication utilizing plural white LED lightings

    Publication Year: 2004 , Page(s): 36 - 40
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (780 KB) |  | HTML iconHTML  

    White LED is considered as a strong candidate for the future lighting technology. We have proposed an optical wireless communication system that employs white LEDs for indoors wireless networks. In this system, LED is not only used as a lighting device, but also used as a communication device. The system has large optical power and large emission characteristic at the transmitter to function as a lighting device. The system has a specific delay profile different from the infrared wireless communication. In this paper, we discuss the shadowing effect on the system utilizing plural LED lightings including the performance of ISI based on the delay profile. We consider the downlink transmission based on TDMA and evaluate the shadowing effect caused by pedestrians with computer simulation. As a result, when the shadowing often occurs at 800 Mb/s, the performance of outage call duration rate and blocking rate are improved by the 3 LED lightings resulting in an optical number of the LED lighting. We show that the system with the optimal number of the LED lighting is robust against shadowing and can accommodate more calls. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Blind estimation of diffused multipath vector channels for DS-CDMA systems

    Publication Year: 2004 , Page(s): 41 - 45
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (580 KB) |  | HTML iconHTML  

    In the antenna array wideband DS-CDMA systems, the propagation medium is a vector channel. Moreover the multipaths that define the channel are spatially and temporally diffused such that each multipath appears as a cluster rather than a point like signal source. Hence, channel estimation techniques that do not exploit the structure of the vector channel become inefficient. In this context, a subspace approach to estimate the diffused vector channels for multi-user wideband DS-CDMA systems is being proposed. The diffused vector channel is parameterized in terms of multipath directions and times of arrival. Then, by employing the structure of the developed diffused vector channel, a powerful blind near-far resistant channel estimation algorithm is derived. Simulation results are provided to illustrate the efficiency of the algorithm. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Performance evaluation of channel estimation techniques for a proposed '4G' MC-CDMA based system in a time varying channel

    Publication Year: 2004 , Page(s): 46 - 50
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (639 KB) |  | HTML iconHTML  

    This paper investigates the performance of channel estimation techniques applied to a proposed fourth generation (4G) multi carrier - code division multiple access (MC-CDMA) system. Coherent detection requires a per-sub band estimation of the channel frequency response for each coded orthogonal frequency division multiplexing (COFDM) symbol. This paper compares the performance of a number of pilot symbol assisted modulation (PSAM) methods for achieving such estimates. Performance results are characterised by bit-error-rate (BER), data throughput (DT) and mean-squared error (MSE) for ETSI UTRA specified channel environments. It is shown that in an indoor environment, FFT filtering provides superior data throughput performance, whereas in a high Doppler vehicular environment, a reduced complexity Wiener filter is able to offer the best performance. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Channel and noise variance estimation and tracking algorithms for unique-word based single-carrier systems

    Publication Year: 2004 , Page(s): 51 - 55
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (673 KB) |  | HTML iconHTML  

    Single-carrier (SC) wireless communication systems generally require knowledge of the channel and the variance of the additive noise process to equalize a received message. Obtaining this information can be straightforward in stationary environments, however, these parameters constantly change in mobile environments. In this paper, we propose novel algorithms for estimating and tracking the channel and noise variance in SC systems by exploiting a unique word (UW) extension. These UW-based algorithms benefit from low complexity and lend themselves to SC systems employing frequency-domain equalization at the receiver. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Performance enhancement analysis for a DS-CDMA system

    Publication Year: 2004 , Page(s): 56 - 60
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (648 KB) |  | HTML iconHTML  

    This paper has addressed the impact of different interference cancellation algorithms - sequential interference cancellation (SIC) and parallel interference cancellation (PIC) - for various data rates and channel profiles that mainly focuses on the evaluation of the performance improvements that accrue from cancelling the common pilot channel's interference in terms of bit error rate performance for downlink applications of a CDMA system. With these advanced signal processing strategies pertaining to the frequency division duplexing (FDD) element of the UMTS terrestrial radio access network (UTRAN) specified by 3GPP, apriori knowledge of the cross-correlation properties of the spreading codes for interfering common signalling channels is utilised in reducing interference under time dispersive wireless channel conditions. Performance analysis, with its dependency on the quality of the channel estimate, emphasises the potentiality of these interference cancellation schemes and their robustness against channel estimation errors. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis of correlation between Ricean K-factor and vegetation density surrounding a CDMA mobile terminal

    Publication Year: 2004 , Page(s): 61 - 65
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (798 KB) |  | HTML iconHTML  

    In this paper, the propagation measurements obtained by utilising the IS-95 pilot signal of a commercial CDMA mobile network in rural Australia are analysed regarding the small-scale fading characteristics. It is shown that for this environment the characteristics can be described by the Ricean distribution, where the K-factor correlates with the clutter density in the vicinity of the mobile receiving antenna. The Ricean K-factor indicates the small-scale fading margin required in a link budget calculation scenario, where pessimistic modelling, assuming Rayleigh fading, would lead to unnecessary high base station transmitter power and possible interference problems. This analysis correlates the vegetation density variations near the mobile receiving antenna to the Ricean K-factor enabling for prediction of the small-scale fading characteristics. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Intelligent network access and inter-system handover control in heterogeneous wireless networks for smart space environments

    Publication Year: 2004 , Page(s): 66 - 70
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (711 KB) |  | HTML iconHTML  

    The next generation of mobile networks supports not just the simple mobile connectivity but also the access in the evolving smart space environments. It is expected that these systems utilise multiple radio access technologies, seamlessly integrated to form a heterogeneous wireless access network, thus enabling total ubiquitous computing. On the arrival of a service request from a smart space user or device, the network operator must assign one of the available access networks. Selecting the network that has the highest probability of providing the best quality of service (QoS) for a particular service type is an important consideration for overall network stability and QoS provisioning. In this paper, we present the aspects of intelligent radio resource management based on policy based call admission control to select the best available network and fuzzy logic based inter-system handover control. The admission controller admits a new user based on the current load and service mix in each available network. The fuzzy logic controller focuses on inter-system handover initiation so as to maintain satisfactory QoS to the end user, while limiting excessive inter-system handover attempts. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A priority based call admission control protocol with call degradation for cellular networks

    Publication Year: 2004 , Page(s): 71 - 75
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (577 KB) |  | HTML iconHTML  

    Call admission control (CAC) protocols play a very important role in the performance of wireless networks. In this paper, we present a call admission control protocol for cellular wireless networks. Our protocol depends on degrading the existing calls by reducing the bandwidth allocated to them in order to admit "important" calls. Our protocol assign priorities for the incoming calls, and in the same time assign priorities to the existing calls, both admitted calls are admitted according to their priorities and the existing calls are degraded according to their priorities. We show simulation results for the relation between network utilization, call blocking probability, and average assigned bandwidth during the life of the call. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Trunked radio systems: traffic prediction based on user clusters

    Publication Year: 2004 , Page(s): 76 - 80
    Cited by:  Papers (4)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (766 KB) |  | HTML iconHTML  

    Studies of individual network users' behavior patterns may seem of little relevance to predicting the entire network's traffic. Clustering techniques, however, help bridge this apparent gap. In this paper, we analyze data collected from a deployed network and use clustering techniques to characterize patterns of individual users' behavior. A network traffic prediction approach is then developed based on user clusters. We analyze three months of continuous network log data from the E-Comm network, an operational trunked radio system. After extracting traffic data from the raw data logs, we identify user clusters by employing the AutoClass tool and the K-means algorithm. Based on the identified user clusters, we use the seasonal autoregressive integrated moving average (SARIMA) model to forecast the network traffic by aggregating the predicted traffic of each user cluster. The predicted network traffic shows good agreement with the collected traffic data. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Evolutionary cell planner

    Publication Year: 2004 , Page(s): 81 - 84
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2934 KB) |  | HTML iconHTML  

    Much work has been done on the use of heuristic techniques for the optimization and planning of mobile networks [Xuemin Huang et al., 2000]-[Xuemin Huang, 2001]. Monte Carlo, genetic algorithm (GA) [D.E. Goldberg, 1989] and simulated annealing (SA) have been used for the purpose of cell planning with moderate success. In this paper, a proposed evolutionary learning technique [Y.H. Lee et al., 2004] is used for the optimization and cell planning. This technique is able to perform a heuristic search with intelligence; knowledge gained from information gathered from previously searched problem space. The success of this technique is attributed to its ability to evolve the cell planning design in an intelligent way with knowledge of the previously searched cell plans. In this paper, a simple example, with Singapore as the model, is used to illustrate the capability of the evolutionary cell planner. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A non-linear binary integer programming model for location area partitioning in cellular radio networks

    Publication Year: 2004 , Page(s): 85 - 89
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (582 KB) |  | HTML iconHTML  

    The scarce radio resources available to any cellular radio network have to be shared between its revenue-generating voice- and data-carrying services, and non-revenue-generating management services. One of these management services is location management, crucial for the network to keep track of the location of its subscribers and to connect their incoming calls. Location management consists of the two activities, paging and location updating, both of which are structured around a subdivision of the network service area called the location area (LA). The ways in which the service area is partitioned therefore has a direct impact on the amount of radio bandwidth that has to be spent on location management. However, paging and location updating share an antagonistic relationship, and finding the optimal LA partitioning that strikes a balance between the two is a challenging design problem. In this paper, the problem of finding the optimal LA partitioning of a cellular radio network service area in order to minimise the total location management signalling cost is addressed. The choice of the decision variables used in the mathematical programming model results in an objective function that is conceptually easy to understand and a solution method that is simple and straightforward. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • BER of PSAM 16-QAM with channel estimation error and MRC diversity

    Publication Year: 2004 , Page(s): 90 - 94
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (665 KB) |  | HTML iconHTML  

    M-ary quadrature amplitude modulation (M-QAM) achieves high spectral efficiency in additive white Gaussian noise (AWGN) and fading channels. In practical wireless systems, the signal fading can severely degrade the receiver performance if the accurate channel amplitude and phase information is not available to the receiver. The bit error rate (BER) performance of maximal ratio combining (MRC) M-QAM with pilot symbol assisted modulation (PSAM) channel estimation in static and Rayleigh fading channels is derived. The effects of noise and estimator decorrelation on the received BER are examined. The high sensitivity of diversity systems to channel estimation error is investigated and quantified. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the impact of phase noise and frequency offsets in block transmission CDMA schemes

    Publication Year: 2004 , Page(s): 95 - 99
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (553 KB) |  | HTML iconHTML  

    Block transmission techniques, with appropriate cyclic extension and employing FDE techniques (frequency-domain equalization), are appropriate for high data rate transmission over severe time-dispersive channels. However, these techniques may require accurate carrier synchronization and very stable oscillators, especially when employed in the uplink transmission of CDMA-based systems (code division multiple access) with large blocks. In this paper, we study the impact of phase noise and frequency offsets on the uplink of CDMA-based block transmission systems. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fully adaptive MODEM up to 1024 QAM for 26 GHz broadband fixed wireless access systems with mesh topology

    Publication Year: 2004 , Page(s): 100 - 104
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1113 KB) |  | HTML iconHTML  

    Broadband fixed wireless access (BFWA) systems operating above 17-GHz band are suitable for high-density deployment of high capacity wireless access infrastructure, while the radio link quality can suffer from rain attenuation especially in rainy climatic regions. In order to overcome the problem and enhance not only the reliability but also the total capacity of the system, the authors have proposed a multi-hop BFWA system with mesh topology. Its unique characteristics include the modulator/demodulator (MODEM) that can adaptively support QPSK, 16 QAM, 64 QAM, 256 QAM and 1024 QAM operation. It has the maximum transmission capacity of 52 Mbits/s per channel at 6.75 MHz symbol rate and attains 364 Mbits/s by multi-channel configuration over the entire 60-MHz bandwidth at 26-GHz band. This paper presents design and implementation of the MODEM together with various data including bit error curves that demonstrate the validity of the design and implementation. A one-year field experiment commenced in April 2004. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Iterative symbol synchronization using variable IIR and FIR fractional-delay filters with arbitrary oversampling ratios

    Publication Year: 2004 , Page(s): 105 - 109
    Cited by:  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (658 KB) |  | HTML iconHTML  

    Software radio systems employ direct conversion receivers with asynchronous sampling such that the actual sampling instants are not synchronized with the incoming symbols. In this paper, an iterative low-complexity symbol synchronization algorithm is proposed. In our proposal, the timing estimate is obtained using two iteration rounds. Qn the first iteration round, we find a rough estimate of the timing error and on the second iteration round, we obtain our final improved timing error estimate. The technique is illustrated with example implementations using both FIR and IIR FD filters showing improved estimation accuracy with comparisons to previously published results. Furthermore, the proposed iterative symbol synchronization algorithm is also shown to reduce the overall implementation complexity. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Analysis of iterative receivers for clipped COFDM signaling based on soft turbo-DAR

    Publication Year: 2004 , Page(s): 110 - 114
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (529 KB) |  | HTML iconHTML  

    High peak average to power ratio (PAPR) is one of the main drawback of the OFDM systems currently used in high rate communication standards. One way to reduce PAPR consists in clipping the amplitude of the OFDM signals introducing an additional noise that degrades the system performances. This paper presents in a first part, the EXIT charts analysis of an iterative reconstruction algorithm of the clipped samples in coded OFDM systems called soft turbo-DAR. This algorithm was recently presented in G Gelle et al., (2004). Moreover, after noticing that the structure of the turbo-DAR algorithm is very close to the BICM-ID receiver, we propose a new algorithm called TD-BICM which outperforms the soft turbo-DAR for Eb/N0 > 5 dB. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Performance analysis of UWB impulse radar using parallel IPCP receiver

    Publication Year: 2004 , Page(s): 115 - 119
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (536 KB) |  | HTML iconHTML  

    UWB impulse radar has high accuracy of measurement because it uses a transmitted signal whose pulse length is below some nanosecond. In this paper, we propose two novel inter-period correlation processing (IPCP) receivers for UWB impulse radar. The conventional IPCP receiver uses the signal periodicity of signals, so it avoids estimation of unknown parameters determined by the targets and propagation. However, its accuracy of measurement is poor because the time resolution is restricted to a signal periodicity. We propose a parallel IPCP receiver to improve accuracy. When there are multiple targets, the conventional IPCP receiver needs multiple thresholds to detect. This results in complexity of the receiver. So, we propose a parallel differential IPCP receiver. We present the analysis of the outputs, and the performance of proposed receivers. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.