Some Statistical Characteristics of MRC Signal Envelope in Rayleigh Fading Environment
نویسندگان
چکیده
In this paper Maximal Ratio Combining (MRC) technique over Rayleigh fading channel is described and some statistical characteristics of received signal envelope are analyzed. For analytical and numerical evaluation of system performance, the probability density functions (pdf) of received signal envelope after MRC are analyzed like particular solutions of corresponding differential equation, while the existence of singular solution is considered and analyzed under different conditions.
منابع مشابه
A Blind Hammerstein Diversity Combining Technique for Flat Fading Channels
Diversity combining techniques play an important role in combating the destructive effects of channel fading in wireless communication systems. In this work we present a blind diversity combining technique for Rayleigh flat fading channels based on Hammerstein type filters. We show that the performance of this technique is very close to ideal MRC system which is accepted as an optimum receiver ...
متن کاملEnergy Detection of Unknown Signals over Composite multipath/shadowing Fading Channels
In this paper, the performance analysis of an energy detector is exploited over composite multipath/shadowing fading channels, which is modeled by Rayleigh-lognormal (RL) distribution. Based on an approximate channel model which was recently proposed by the author, the RL envelope probability density function (pdf) is approximated by a finite sum of weighted Rayleigh pdfs. Relying on this inter...
متن کاملBER Performance Analysis of MRC for OFDM System using Different Modulation Schemes over Rayleigh Fading Channel
In wireless communication systems antenna diversity is an important technique to combat multipath effects of fading to improve the system performance and to increase the channel capacity. This paper explores receiving antenna diversity issues for Orthogonal Frequency Division Multiplexing (OFDM) in Rayleigh fading environment using maximal ratio combining (MRC). The performance of MRC for OFDM ...
متن کاملVirtual branch analysis of symbol error probability for hybrid selection/maximal-ratio combining in Rayleigh fading
In this paper, we derive analytical expressions for the symbol error probability (SEP) for a hybrid selection/maximalratio combining (H-S/MRC) diversity system in multipath-fading wireless environments. With H-S/MRC, out of diversity branches are selected and combined using maximal-ratio combining (MRC). We consider coherent detection of -ary phase-shift keying (MPSK) and quadrature amplitude m...
متن کاملEM-Based Optimal Maximal Ratio Diversity Combiner for Constant Envelope Signals
An optimal maximal ratio combiner (MRC) based on the expectation-maximization (EM) algorithm is developed for noisy constant envelope signals transmitted over a Rayleigh fading channel. Instead of using a transmitted pilot signal with the data to estimate the combiner gains, the EM algorithm is used to perform this estimation. In the developed MRC, estimation of the transmitted data sequence is...
متن کامل