Results 211 to 220 of about 1,330,151 (239)
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Design of polar codes for Rayleigh fading channel
2015 International Symposium on Wireless Communication Systems (ISWCS), 2015A simple method for construction of polar codes for Rayleigh fading channel is presented. The subchannels induced by the polarizing transformation are modeled as multipath fading channels, and their diversity order and noise variance are tracked.
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On the capacity of CPM over Rayleigh fading channels
2012 International Conference on Wireless Communications and Signal Processing (WCSP), 2012In this paper, an algorithm is proposed to calculate the capacity of continuous phase modulation (CPM) over Rayleigh fading channels. The proposed algorithm is an extension of the simulation-based algorithm for calculating information rates of channels with memory. We modify the algorithm by taking into account the fading coefficients.
Rongting Chen +4 more
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Prediction of State Transitions in Rayleigh Fading Channels
IEEE Transactions on Vehicular Technology, 2007This paper presents a channel-sampling scheme that allows robust estimation of channel transitions into and out of the fade state. The sampling scheme is based upon a second-order autoregressive (AR-2) model for the Rayleigh fading channel and a corresponding state-space representation in terms of fade and nonfade states.
Prachee Sharma, Kavitha Chandra
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Decoding of constellations matched to the Rayleigh fading channel
Annales Des Télécommunications, 1998Il a ete recemment montre que l’utilisation de constellations a d dimensions specialisees pour le canal de Rayleigh permettait d’obtenir une diversite d’ordre d sans aucun codage (constellation π) [6–8]. Cependant, le decodage de ces constellations est tres complexe et rend problematique leur utilisation dans des applications haut debit.
Emmanuel Boutillon +2 more
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Innovations-based MLSE for Rayleigh fading channels
Proceedings of IEEE Pacific Rim Conference on Communications Computers and Signal Processing, 1995Use of the innovations approach for developing MLSE (maximum likelihood sequence estimation) algorithms for signals transmitted over Rayleigh fading channels is considered. The derived receiver demodulates the signals recursively in a noncoherent fashion and is applicable to any linearly modulated signals and to both frequency-nonselective and ...
Xiaoyong Yu, Subbarayan Pasupathy
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Coding for the Rayleigh fading channel
1996The problem of effective coding for the Rayleigh fading channel is addressed. A signal transmitted over the Rayleigh fading channel experiences quasi-periodic deep fades in the signal amplitude, and random phase shifts. The fades in signal amplitude are the cause of error events and limit the bit error rate of an uncoded system to about 10-4 at a ...
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On the performance of the quadratic receiver for Rayleigh fading channels
Proceedings of ICUPC '95 - 4th IEEE International Conference on Universal Personal Communications, 2002We investigate maximum likelihood sequence estimation (MLSE) of data sequences transmitted over time-varying frequency-selective Rayleigh fading channels. We present the optimal receiver designed to exploit perfect channel state information (CSI) at the beginning of the data sequence and the optimal receiver which does not use this information. For any
P. Castoldi, RAHELI, Riccardo
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Minimum duration outages in Rayleigh fading channels
IEEE Transactions on Communications, 2001Minimum duration outages have been introduced for lognormal shadow fading where the durations of signal fades were considered in evaluating outages. We develop and analyze such minimum duration outages for channels susceptible to Rayleigh fading. The results show that under typical Doppler frequencies the outages due to Rayleigh fading are more likely ...
Jie Lai, Narayan B. Mandayam
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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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Conditions for Cooperative Transmission on Rayleigh Fading Channels
2014 IEEE 80th Vehicular Technology Conference (VTC2014-Fall), 2014We consider a system of two nodes transmitting to an access point on quasi-static Rayleigh fading channels. We use signal-to-noise ratio (SNR) thresholds to characterize the requirements of each node, in terms of throughput and reliability, and we study their impact on outage probability.
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