By Topic

Radio and Wireless Symposium (RWS), 2010 IEEE

Date 10-14 Jan. 2010

Filter Results

Displaying Results 1 - 25 of 181
  • [CD label]

    Page(s): 1
    Save to Project icon | Request Permissions | PDF file iconPDF (945 KB)  
    Freely Available from IEEE
  • [CD booklet]

    Save to Project icon | Request Permissions | PDF file iconPDF (940 KB)  
    Freely Available from IEEE
  • [CD welcome]

    Page(s): c1
    Save to Project icon | Request Permissions | PDF file iconPDF (341 KB)  
    Freely Available from IEEE
  • Hub page

    Page(s): 1
    Save to Project icon | Request Permissions | PDF file iconPDF (254 KB)  
    Freely Available from IEEE
  • Session list

    Page(s): 1
    Save to Project icon | Request Permissions | PDF file iconPDF (21 KB)  
    Freely Available from IEEE
  • Table of contents

    Page(s): 1 - 35
    Save to Project icon | Request Permissions | PDF file iconPDF (116 KB)  
    Freely Available from IEEE
  • Brief author index

    Page(s): 1 - 13
    Save to Project icon | Request Permissions | PDF file iconPDF (49 KB)  
    Freely Available from IEEE
  • Detailed author index

    Page(s): 1 - 72
    Save to Project icon | Request Permissions | PDF file iconPDF (176 KB)  
    Freely Available from IEEE
  • The end of indexes

    Page(s): 1
    Save to Project icon | Request Permissions | PDF file iconPDF (52 KB)  
    Freely Available from IEEE
  • [PDF Reader FAQ and support]

    Page(s): 1
    Save to Project icon | Request Permissions | PDF file iconPDF (126 KB)  
    Freely Available from IEEE
  • [PDF Reader FAQ and support]

    Page(s): 1 - 5
    Save to Project icon | Request Permissions | PDF file iconPDF (455 KB)  
    Freely Available from IEEE
  • [Title page]

    Page(s): 1
    Save to Project icon | Request Permissions | PDF file iconPDF (341 KB)  
    Freely Available from IEEE
  • [Copyright notice]

    Page(s): 1
    Save to Project icon | Request Permissions | PDF file iconPDF (26 KB)  
    Freely Available from IEEE
  • Steering Committee

    Page(s): 1 - 2
    Save to Project icon | Request Permissions | PDF file iconPDF (320 KB)  
    Freely Available from IEEE
  • Technical Program Committee

    Page(s): 1 - 2
    Save to Project icon | Request Permissions | PDF file iconPDF (130 KB)  
    Freely Available from IEEE
  • Plenary session

    Page(s): 1
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (138 KB)  

    A talk outlining the significant attributes of GaN as the “right semiconductor technology” at the “right time” in the RF power and power management industries will be presented. The path forward as GaN matures as a mainstream semiconductor technology and parallels with the maturation and commercialization of Gallium Arsenide (GaAs) HBT technology in the 1990s will be also discussed. The potential role of GaN as a “green technology” for next generation networks and global power applications will also be highlighted. View full abstract»

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

    Page(s): 1 - 2
    Save to Project icon | Request Permissions | PDF file iconPDF (468 KB)  
    Freely Available from IEEE
  • Fully integrated millimeter-wave radiometers: Development level and perspectives

    Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (176 KB) |  | HTML iconHTML  

    Radiometers are sophisticated sensors commonly in use since decades in different fields, among the others: radioastronomy, meteorology and remote sensing from satellite. Being a sort of noise temperature eye, the radiometer can be applied, in principle, to a huge variety of observations, nevertheless its exploitation has been limited so far by the cost of the technology required. The most of the existing apparatuses in fact are actually based on waveguide or hybrid technology in combination with 3D antennas; it poses severe constraints in terms of cost, dimension, weight and mass production possibilities and ultimately applicability. Nowadays, the strong increment of the operating frequencies of even low cost IC technologies, such as CMOS with cut off frequencies far beyond 100 GHz, allows us to look at radiometers from a different and wider perspective. This contribution will show how, working with suitable architectures in combination with state of art technologies, it is possible to foresee overall radiometer performance compatible with many interesting and not yet experienced applications. Details about possible architectures will be described, present technological limits will be discussed and their influence to the performance attainable in relation with present available technologies will be treated as well. A forecast of future applications opened by new generation integrated radiometers will be discussed intended to stimulate fertile discussions. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Bearing cage telemeter for the detection of shaft imbalance in rotating systems

    Page(s): 5 - 8
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (955 KB) |  | HTML iconHTML  

    We demonstrate for the first time a low-cost battery-free wireless telemeter integrated on a dynamically balanced ball bearing operating in a test setup that mimics the operating conditions of a two-compressor turbocharger. In this method we continuously monitor the bearing cage temperature and demonstrate the ability to detect rotor imbalance during operation even at low speeds below 5,550 RPM. The telemeter is based on a simple commercially-available temperature-sensitive capacitor coupled with an inductor that is mounted on the bearing cage and is able to operate at temperatures up to 150°C. Cage temperature is sensed wirelessly through a matched interrogator tuned to the natural frequency of the cage sensor at 13.1 MHz. A 5°C temperature differential is detected at 4,700 RPM between a balanced rotor and one with an applied 2.32 × 10-3 kg-m imbalance. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Home security sensor using 2.4GHz ISM band

    Page(s): 9 - 12
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (453 KB) |  | HTML iconHTML  

    Delay profile of wideband indoor channel fluctuates for a physical change such as intruder. This paper investigates a human body detection using the wideband radio at 2.4 GHz (ISM band) in order to protect a house, not a room, because the radio with high range resolution can penetrate into the inner walls and also the reflected paths from human body are discriminated in time domain. The usefulness is experimentally investigated under a scenario which someone intrudes into a typical house with four rooms and walks around. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Wireless motion sensor using ultra-wideband impulse-radio

    Page(s): 13 - 16
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (412 KB) |  | HTML iconHTML  

    Ultra-wideband impulse-radio (UWB-IR) has lately attracted considerable attention because of high range-resolution, penetration against blanket and clothes, low power spectral emission and so on. In medical care or geriatric health care facilities, therefore it is expected to detect the small movement of a resident such as breathing with a remote non-contact approach which is unique as compared with conventional sensors such as infra-red and narrow-band radio. This paper suggests a wireless motion sensor using UWB-IR, which detects various movements of a resident vacating a bedside, room or designated area. It can also monitor the resident's respiration rate in bed. In this paper the measurement was conducted for several scenarios and the usefulness is investigated. As a result, it is found to be useful for ant-wandering and respiratory monitoring. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design and optimization of the electromagnetic front-end for wireless sensors floating in dissipative media

    Page(s): 17 - 20
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (532 KB) |  | HTML iconHTML  

    The interest in the exploitation of wireless sensor networks in dissipative media (other than the free space) is nowadays growing in importance, thanks to the identification of newer and newer fields of application. This paper introduces a methodology for the analysis of the geometrical parameters of the antenna. The proposed procedure takes into account the coupling mechanism with the surrounding medium, as well as the electromagnetic interaction with the electronic and metallic components of the sensor. In this way, the identification of the parameters can be carried out by an introduction of a simplified iterative pre-conditioned modeling procedure that avoids long running times typical of a complete full wave model. Results obtained for the analysis of mobile sensor networks floating in underground water conduits confirm the adequacy of the proposed method. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • MIMO radar based on reduced complexity compressive sampling

    Page(s): 21 - 24
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (190 KB) |  | HTML iconHTML  

    In their previous work, the authors considered a multiple-input multiple-output (MIMO) radar implemented by a set of randomly dispersed nodes within a small scale network. Exploiting the sparseness of targets in the angle-Doppler space, compressive sampling was exploited for obtaining joint angle-Doppler information on potential targets based on a small number of observations. That approach achieves the superior resolution of MIMO radar with far fewer samples than required by conventional approaches. However, it involves a discretization of the angle-Doppler space, and as the discretization step decreases in order to achieve high resolution, complexity increases. In this paper, a scheme to reduce the complexity of the aforementioned approach for the case of slowly moving targets is considered. The complexity reduction is achieved by decoupling angle and Doppler estimation. An approach is also proposed for identifying angle estimates that correspond to jammers. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Novel adaptive blind-equalizer-order selection scheme for multiple-input multiple-output channels

    Page(s): 25 - 28
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (131 KB) |  | HTML iconHTML  

    This paper introduces a novel adaptive finite impulse-response (FIR) equalizer-order selection scheme for multiple-input multiple-output (MIMO) channels. The model-order selection for blind FIR equalizers is determined heuristically but hardly on any theoretical basis. However, this heuristical strategy would often lead to a suboptimal solution. Thus, we design a non-pilot-aided MIMO channel-length estimation scheme and propose a new blind-equalizer-order determination scheme built on such an adaptive channel-length estimation method. Our simulations show that the proposed scheme greatly outperforms the conventional systems using the fixed heuristical model-order selection technique. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Joint transmit and receive antenna selection using a probabilistic distribution learning algorithm in MIMO systems

    Page(s): 29 - 32
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (133 KB) |  | HTML iconHTML  

    In this paper, we present a real-time low-complexity joint transmit and receive antenna selection (JTRAS) algorithm. The computational complexity of finding an optimal JTRAS by exhaustive search grows exponentially with the number of transmit and receive antennas. The proposed Estimation of Distribution Algorithm (EDA) is resorts to probabilistic distribution learning evolutionary computation. EDA updates its chosen population at each iteration on the basis of the probability distribution learned from the population of superior candidate solutions chosen at the previous iterations. The proposed EDA has a low computational complexity and can find a nearly optimal solution in real time. Beyond applying the general EDA to JTRAS, we also present a specific improvement to EDA, which reduces computation time by generating cyclic shifted initial population. The proposed EDA for JTRAS has a low computational complexity, and its effectiveness is verified through simulation results. View full abstract»

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