Performance Analysis of Hybrid ALOHA/CDMA RFID Systems with Quasi-decorrelating Detector in Noisy Channels
نویسندگان
چکیده
منابع مشابه
Analysis of an adaptive decorrelating detector for synchronous CDMA channels
Multiuser detection allows for the eecient use of bandwidth in Code Division Multiple Access (CDMA) channels through mitigation of near-far eeects and multiple-access noise limitations. The decorrelating detector, developed by Lupas, is a linear multiuser detector that is asymptotically optimal in terms of near far resistance when certain communication parameters are completely known to the det...
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In this paper an approximate decorrelating detector is analyzed on the basis of a rst order ap proximation to the inverse crosscorrelation matrix of signature waveforms The approximation is fairly accurate for systems with low crosscorrelations and is exact in the two user synchronous case We present an exact as well as approximate analysis of the bit error rate performance of this detector on ...
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Abstract — Consider a code-division multipleaccess system in a correlated Rayleigh fading environment in which the fading gains are independent among the users but correlated among the receive diversity branches, and which uses the decorrelating multiuser detector. The branches are combined using maximal-ratio combining, which requires channel estimation. The channel is estimated by means of pi...
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Abstract We propose an extended one-shot decorrelating detector (EOS-DD) for asynchronous DS/CDMA systems in frequency selective fading environments. The EOS-DD extends a processing window to several symbol duration. The received signal over an extended window is utilized for the decorrelator in the EOS-DD. The effects of the window size on BER performance are investigated by numerical analysis...
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In this paper, the multipath decorrelating (MD) detector which is used in code division multiple access (CDMA) systems to eliminate multiple access interference (MAI) is considered. The MD detector requires the inversion of a signature sequence correlation matrix. This process is computationally expensive and it also enhances the channel noise. Recently, an adaptive path selective decorrelating...
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ژورنال
عنوان ژورنال: REV Journal on Electronics and Communications
سال: 2019
ISSN: 1859-378X,1859-378X
DOI: 10.21553/rev-jec.212