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Fading distribution

About: Fading distribution is a research topic. Over the lifetime, 5732 publications have been published within this topic receiving 114193 citations.


Papers
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Journal ArticleDOI
TL;DR: The author derives a formula for error probability of partial-response continuous-phase modulation with differential phase detector and limiter discriminator detector in a multipath Rayleigh fading channel, taking into account frequency-selective fading, cochannel interference, Doppler frequency shift, and additive Gaussian noise while the receiver rejects a specified amount of adjacent channel interference.
Abstract: The author derives a formula for error probability of partial-response continuous-phase modulation with differential phase detector and limiter discriminator detector in a multipath Rayleigh fading channel, taking into account frequency-selective fading, cochannel interference, Doppler frequency shift, and additive Gaussian noise while the receiver rejects a specified amount of adjacent channel interference. A formula for the error floor is also presented. Numerical results are presented for Gaussian minimum shift keying with a premodulation normalized filter bandwidth of 0.25. Under mild channel conditions and low energy-to-noise ratios, the best detector is an optimized two-bit differential detection; otherwise the best detector is the limiter discriminator detector. >

29 citations

Proceedings ArticleDOI
29 Jun 1997
TL;DR: An algorithm is developed for computing capacity and the corresponding optimal distribution of a discrete-time Rayleigh fading channel, in which successive symbols face independent fading, and where neither the transmitter nor the receiver has channel state information.
Abstract: We consider transmission over a discrete-time Rayleigh fading channel, in which successive symbols face independent fading, and where neither the transmitter nor the receiver has channel state information. Subject to an average power constraint, we study the capacity-achieving distribution of this channel and prove it to be discrete with a finite number of mass points, one of them located at the origin. We develop an algorithm for computing capacity and the corresponding optimal distribution.

29 citations

Journal ArticleDOI
TL;DR: Application of the method to the cases of minimum shift keyed and offset quadriphase shift key (OQPSK) systems reveals a slight performance advantage for MSK.
Abstract: A technique is given for determining the error-rate performance of a class of digital communication systems operating with fading multipath interference. The approach uses a truncated series to represent the fading process and takes into account the effects of intersymbol interference caused by linear filtering in the receiver or channel. Application of the method to the cases of minimum shift keyed (MSK) and offset quadriphase shift key (OQPSK) systems reveals a slight performance advantage for MSK.

28 citations

Proceedings ArticleDOI
29 Jun 1997
TL;DR: Here the authors look at a particularly simple model of the fading channel, but the methodology appears to be extendable to more general models.
Abstract: The issue of bandwidth scaling has always caused some confusion for channels subject to additive white Gaussian noise plus multipath fading On the one hand, there is an old result saying that the capacity of the channel (under a power constraint but no bandwidth constraint) is the same as the infinite bandwidth capacity of the non-fading additive noise channel with the same average received power as the fading channel On the other hand, it appears intuitively that when a CDMA system is spread too widely in bandwidth, it becomes increasingly difficult for a RAKE receiver to measure the channel and correspondingly difficult for detection to take place Here the authors look at a particularly simple model of the fading channel, but the methodology appears to be extendable to more general models

28 citations

Journal ArticleDOI
TL;DR: In this article, the response of an FM discriminator to a fading signal is derived, taking into account the below-threshold noise and the effect of various diversity techniques, including maximal-ratio combining, selection diversity, and equal gain combining.
Abstract: The response of an FM discriminator to a fading signal is derived, taking into account the below-threshold noise and the effect of various diversity techniques. The effect of muting the discriminator output at low signal levels is considered and shown to achieve only marginal improvement. The diversity techniques considered are maximal-ratio combining, selection diversity, and equalgain combining. Only predetection combining is considered for the maximal-ratio and equal-gain techniques. The average SNR at the discriminator output is derived for each form of diversity, assuming that each diversity branch is independent of the others and subject to fading with a Rayleigh envelope distribution. Curves of average SNR plotted against the mean CNR in one branch are presented for various numbers of diversity branches and ratios of IF bandwidth and baseband bandwidth. The curves presented are for maximal-ratio combining only, but it is shown that the results for selection diversity and equal-gain combining may be obtained from these curves by simply applying a correction to the mean CNR. The theoretical results are supported by experimental measurements that show very close agreement with theory.

28 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202322
202270
202123
202022
201920
201837