Results 221 to 230 of about 9,598 (263)
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2002
From the Publisher: All relevant components of a mobile radio system, from digital modulation techniques over channel coding through to network aspects, are determined by the propagation characteristics of the channel. Therefore, a precise knowledge of mobile radio channels is crucial for the development, evaluation and test of current and future ...
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From the Publisher: All relevant components of a mobile radio system, from digital modulation techniques over channel coding through to network aspects, are determined by the propagation characteristics of the channel. Therefore, a precise knowledge of mobile radio channels is crucial for the development, evaluation and test of current and future ...
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Distortion Exponent of Parallel Fading Channels
2006 IEEE International Symposium on Information Theory, 2006We consider the end-to-end distortion achieved by transmitting a continuous amplitude source over M parallel, independent quasi-static fading channels. We analyze the high SNR expected distortion behavior characterized by the distortion exponent. We first give an upper bound for the distortion exponent in terms of the bandwidth ratio between the ...
D. Gunduz, E. Erkip
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The Fading Number of a Multiple-Access Rician Fading Channel
IEEE Transactions on Information Theory, 2009The fading number of a noncoherent two-user Ri-cian fading channel is derived. The fading number is the second term in the high-SNR expansion of the sum-rate capacity of this multiple-access channel. It is shown that the fading number is identical to the fading number of the single-user Rician fading channel that is obtained when the user seeing the ...
Gu-Rong Lin, Stefan M. Moser
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Ergodic channel capacity for generalized fading channels
2014 IEEE Wireless Communications and Networking Conference (WCNC), 2014The ergodic channel capacity (ECC) of single-branch receivers is studied under the scenarios described by means of α-η-μ, α-к-μ, and α-λ-μ-η generalized fading channels. Novel expressions are derived, which are the most general in this scientific area.
Anastasios Papazafeiropoulos +1 more
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OFDM channel estimation with dispersive fading channels
The Journal of China Universities of Posts and Telecommunications, 2012Abstract In this paper, we studied the channel estimation problem for the orthogonal frequency division multiplexing (OFDM) system when the statistics of the multi-path fading channel is not known or partial known. A channel estimation approach based on polynomial approximation of the channel response is proposed.
Dong-yu WANG, Tao DUAN, Yong-jian ZHANG
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2011
In the present chapter, we extend the bounds on the achievable rate with i.d. input symbols given in Chapter 3 for the discrete-time flat-fading SISO channel to the MIMO case, including spatial antenna correlation. Beside the constraint on i.d. input symbols in temporal domain, as it has been also used in the SISO case, we furthermore do not optimize ...
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In the present chapter, we extend the bounds on the achievable rate with i.d. input symbols given in Chapter 3 for the discrete-time flat-fading SISO channel to the MIMO case, including spatial antenna correlation. Beside the constraint on i.d. input symbols in temporal domain, as it has been also used in the SISO case, we furthermore do not optimize ...
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2007
In most wireless communications research, the channel models considered experience less severe fading than the classic Rayleigh fading case. In this thesis, however, we investigate MIMO channels where the fading is more severe. In these environments, we show that the coefficient of variation of the channel amplitudes is a good predictor of the link ...
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In most wireless communications research, the channel models considered experience less severe fading than the classic Rayleigh fading case. In this thesis, however, we investigate MIMO channels where the fading is more severe. In these environments, we show that the coefficient of variation of the channel amplitudes is a good predictor of the link ...
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Channel parameter estimation in Rayleigh fading channel
Electronics and Communications in Japan (Part III: Fundamental Electronic Science), 2005In wireless communication environments such as indoors and in a relatively narrow region for which applications have recently started, the information transmission speed is sufficiently faster than the fading variation. In such cases, the fading variation can be viewed as a colored probability process with autocorrelation.
Hirohisa Gambe +3 more
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Satellite Channel Modelling for Rain Fading
21st International Communications Satellite Systems Conference and Exhibit, 2003In Ka band and above the transmitted signal can be attenuated severely by precipitation, clouds and for other meteorological reasons. In this paper a channel model is presented which generates an attenuation time-series modelling this type of attenuation.
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Fade Statistics in Composite Fading Channels
Journal of Electronics & Information Technology, 2011Xiao-dong Wang +2 more
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