منابع مشابه
Multipath & Fading
In radar processing, multipath causes ghost targets to appear, deceiving the radar receiver. These ghosts are particularly bothersome since they move and behave like the normal targets (which they echo), and so the receiver has difficulty in isolating the correct target echo. These problems can be overcome by incorporating a ground map of the radar's surroundings and eliminating all echoes whic...
متن کاملBit Error Performance for Asynchronous Ds Cdma Systems Over Multipath Rayleigh Fading Channels (RESEARCH NOTE)
In recent years, there has been considerable interest in the use of CDMA in mobile communications. Bit error rate is one of the most important parameters in the evaluation of CDMA systems. In this paper, we develop a technique to find an accurate approximation to the probability of bit error for asynchronous direct–sequence code division multiple–access (DS/CDMA) systems by modeling the multipl...
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 کاملA Comparative Study between Multipath Fading Channels
There are various kinds of channel used in wireless communication. This Paper shows a performance analysis on the basis of different fading channels. This is the comparative analysis with different kinds of modulation techniques. communication. The effects of noise on fading and property of the channel were tested. Here we have also measured the Bit Error Rate with respect to different modulati...
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ژورنال
عنوان ژورنال: IEEE Transactions on Antennas and Propagation
سال: 1981
ISSN: 0096-1973
DOI: 10.1109/tap.1981.1142637