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2010 International Conference on Communications, Circuits and Systems (ICCCAS)

28-30 July 2010

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Displaying Results 1 - 25 of 218
  • Organizers, sponsors and forewords - I

    Publication Year: 2010, Page(s):1 - 2
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  • Organizers, sponsors and forewords - II

    Publication Year: 2010, Page(s):1 - 2
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  • ICCCAS 2010 Steering Committee

    Publication Year: 2010, Page(s):1 - 8
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  • ICCCAS 2010 Steering Committee

    Publication Year: 2010, Page(s):1 - 8
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    Freely Available from IEEE
  • Keynote speech abstracts

    Publication Year: 2010, Page(s):1 - 4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (906 KB)

    Provides an abstract for each of the keynote presentations and a brief professional biography of each presenter. The complete presentations were not made available for publication as part of the conference proceedings. View full abstract»

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  • Contents of proceedings of ICCCAS 2010

    Publication Year: 2010, Page(s):1 - 12
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  • Novel transmit diversity schemes and iterative channel estimation for TDS-OFDM system

    Publication Year: 2010, Page(s):1 - 5
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (402 KB) | HTML iconHTML

    When adopting transmit diversity in Time Domain Synchronous Orthogonal Frequency Division Multiplex (TDS-OFDM) system, the pseudo noise (PN) sequence from different transmit antennas will interfere with each other, so the receiver can't estimate the channel impulse response (CIR) correctly. In this paper, two frame structures with different PN sequence designs for transmit diversity are proposed. ... View full abstract»

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  • Two novel noise estimation methods with low complexity for the OFDM system

    Publication Year: 2010, Page(s):6 - 9
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1033 KB) | HTML iconHTML

    This paper presents two new noise estimation methods in the orthogonal frequency division multiplexing system, which are based on the channel estimation. In the traditional noise estimation method, the noise power is achieved with subtracting the pilot signal power from the total received power. While the first new noise estimation method can get the noise power easily by the difference of the adj... View full abstract»

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  • Capacity of MIMO broadcast channels in cognitive radio networks

    Publication Year: 2010, Page(s):10 - 14
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (587 KB) | HTML iconHTML

    This paper investigates the sum rate capacity of MIMO broadcast channels (MIMO-BCs) in cognitive radio (CR) networks. An efficient algorithm is proposed for selecting a set of users to achieve a high sum rate capacity of the system. With the above algorithm, the sum rate capacity of MIMO-BCs in CR networks with average interference power constraints and transmit power constraints is derived. We fo... View full abstract»

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  • A synchronization scheme for MIMO OFDM system

    Publication Year: 2010, Page(s):15 - 18
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    In the paper, an accurate and efficient scheme for time and frequency synchronization is proposed for 2×2 MIMO OFDM based on wireless local area networks( WLAN) system. The synchronization is achieved by using training symbols and CP which are simultaneously transmitted from 2 transmit antennas. For timing synchronization, in order to reduce the probability of false alarm and false detectio... View full abstract»

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  • Simulation and analysis of MIMO-OFDM system based on simulink

    Publication Year: 2010, Page(s):19 - 22
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1526 KB) | HTML iconHTML

    MIMO-OFDM is the key technology for future mobile communications. This article briefly analyzed the basic principles of MIMO-OFDM and gave the model of the MIMO-OFDM based on simulink. Then we simulated the entire system. And the system performance under different channel estimation algorithms is analysed. The simulation results show that the proposed model of the MIMO-OFDM is good. And this model... View full abstract»

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  • Performance comparison between CI/OFDM and OFDM systems

    Publication Year: 2010, Page(s):23 - 27
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1104 KB) | HTML iconHTML

    Carrier Interferometry Orthogonal frequency division multiplexing (CI/OFDM) has gained a great deal of attention recently because of its good bit error rate (BER) and low peak-to-average power ratio (PAPR) performance. In this paper, we investigate the performance of CI/OFDM based on a new implementation model for both zero forcing (ZF) and minimum mean square error (MMSE) equalization. We further... View full abstract»

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  • Simulation and analysis of OFDM system based on simulink

    Publication Year: 2010, Page(s):28 - 31
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1925 KB) | HTML iconHTML

    The OFDM technology can conquer the frequency selected fading and the inter-channel interference (ICI) effectively, so it is the core technology in the future mobile communications. The basic principle and some key technologies of OFDM are studied in this paper. Then we gave the OFDM block diagram and simulink model. Under the non-ideal synchronization circumstance, we studied the signal changes b... View full abstract»

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  • A novel codebook design with the LBG algorithm in precoding systems under spatial correlated channel

    Publication Year: 2010, Page(s):32 - 36
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (634 KB) | HTML iconHTML

    Precoding is an efficient approach to obtain high channel capacities and high quality in multiple-input-multiple-output systems and draws much attention in recent researches. In the codebook-based precoding systems, the tradeoff between performance and feedback overhead should be considered. In this paper, a novel version of the Linde-Buzo-Gray (LBG) algorithm is first utilized in the codebook des... View full abstract»

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  • Distributed temporal precoding with a novel power allocation scheme in cooperative systems

    Publication Year: 2010, Page(s):37 - 40
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    In cooperative systems, precoding techniques can be utilized through temporal continuous symbols transmitted by the source node, which is termed as distributed temporal precoding (DTP). In this paper, we propose a novel power allocation scheme combining with DTP and the adaptive modulation and coding technique, which is based on the greedy algorithm and designed with practical modulation and codin... View full abstract»

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  • An appropriate radius for reduced-complexity sphere decoding

    Publication Year: 2010, Page(s):41 - 44
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (949 KB) | HTML iconHTML

    Sphere decoding (SD) for multiple-input multiple-output (MIMO) systems has been shown to achieve maximum-likelihood (ML) performance with low complexity. However, the achievement of such an excellent performance-complexity tradeoff is highly dependent on initial choice of sphere radius. In this paper, we propose a new scheme of initial radius selection which has less computational complexity than ... View full abstract»

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  • The SP algorithm decoding of convolutional codes

    Publication Year: 2010, Page(s):45 - 48
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (525 KB) | HTML iconHTML

    As one of the candidates of cellular phone TV standard, the DAB-based CDMB adopts convolutional codes as its channel coding. In this article, we present a new sum-product decoding algorithm, where parity-check matrix is constructed under the circumstance that the sending encoder is unaltered or partially modified. It shows that our method obtain about 1dB gain higher than the traditional Viterbi a... View full abstract»

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  • Coexistence studies for TD-LTE with radar system in the band 2300–2400 MHz

    Publication Year: 2010, Page(s):49 - 53
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (591 KB) | HTML iconHTML

    Because of the lack of dedicated frequency bands, the TD-LTE system is possibly deployed in the same band with other existed mobile systems. In this paper, the coexistence studies for the TD-LTE system with the radar system which has been widely deployed in the band 2300-2400 MHz, is presented. The dynamical system simulation methodology is utilized in the coexistence studies, and simulation resul... View full abstract»

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  • Semi-persistent scheduling for VoIP service in the LTE-Advanced relaying networks

    Publication Year: 2010, Page(s):54 - 58
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (411 KB) | HTML iconHTML

    This paper studies the performance of Voice-over-Internet-Protocol (VoIP) service in the third generation (3G) long-term evolution (LTE)-Advanced relaying networks. We propose a semi-persistent scheduling algorithm for the VoIP service in the LTE-Advanced relaying networks. The performance of the presented algorithm is verified by system-level simulation. Deployments with different number of relay... View full abstract»

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  • A novel detection scheme to mitigate the TD-LTE interference

    Publication Year: 2010, Page(s):59 - 62
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1401 KB) | HTML iconHTML

    In this article, a novel detection scheme will be introduced into the CR system based on the Time Duplex-Long Term Evolution (TD-LTE) scheme, in which radar system is the primary user. If the CR nodes carry on the on-line energy detection to the radar signal, it will be subject to the interference originated from the TD-LTE system's Base Station (BS). We propose a new detection program employed on... View full abstract»

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  • Traffic load balance methods in the LTE-Advanced system with carrier aggregation

    Publication Year: 2010, Page(s):63 - 67
    Cited by:  Papers (14)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB) | HTML iconHTML

    In the further advancements for the third generation (3G) long-term evolution (LTE) system, i.e. the LTE-Advanced system, carrier aggregation (CA) is applied to support wide system bandwidth and ensure backward compatibility. In this paper, two traffic load balance methods are proposed to improve the performance of the independent carrier scheduling (ICS) scheme in CA based LTE-Advanced system wit... View full abstract»

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  • Linear precoding and power allocation in the downlink of cognitive radio networks

    Publication Year: 2010, Page(s):68 - 72
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1149 KB) | HTML iconHTML

    We consider the downlink of a cognitive radio (CR) system, where secondary users (SUs) share the radio spectrum with primary users (PUs) while ensuring no harmful interference is introduced to PUs. To protect the communications of PUs and in the same time maximize the sum rate of SUs, we propose a joint linear precoding based on minimum mean-square-error (MMSE) criterion and power allocation strat... View full abstract»

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  • Optimal training power allocation for amplify and forward relay networks

    Publication Year: 2010, Page(s):73 - 77
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1194 KB) | HTML iconHTML

    In this paper, we consider a three node relay channel with amplify-and-forward (AF) transmission mode. Instead of analyzing the cascaded source-relay-destination channel directly at the destination, we estimate the source-relay channel based on the received pilot signals and the pre-estimated channel of relay-destination link by inserted training at the relay. Given that the outage probability has... View full abstract»

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  • Optimal joint resource allocation in OFDMA-based relay system

    Publication Year: 2010, Page(s):78 - 82
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (677 KB) | HTML iconHTML

    Three issues should be taken into account to improve performance in relay system with multiple channels. They are, how to allocate the power at source and relay to the subchannels, how to pair subchannels of the first hop and the second hop, and which users should be scheduled to which subchannel pair. These issues are considered to design the optimal joint resource allocation scheme in multiple o... View full abstract»

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  • The CRLB for WSNs location estimation in NLOS environments

    Publication Year: 2010, Page(s):83 - 86
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (769 KB) | HTML iconHTML

    Location estimation in wireless sensor networks (WSNs) has gained considerable attention over the past decade. The Cramer-Rao lower bound (CRLB) has been derived for the Gaussian noise. However, one of the major problems for accurate location in WSNs is the Non-line-of-sight (NLOS) situation. In this paper, the CRLB has been derived for node localization in NLOS environments, which have not been s... View full abstract»

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