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Switching rate and receiver performance of binary modulations with the selection‐and‐stay combining over independent and correlated Nakagami‐ m fading channels
Author(s) -
Chau Yawgeng A.,
Chen YaoHua
Publication year - 2011
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.1208
Subject(s) - fading , nakagami distribution , binary number , computer science , bit error rate , selection (genetic algorithm) , diversity combining , algorithm , signal to noise ratio (imaging) , modulation (music) , maximal ratio combining , telecommunications , dual (grammatical number) , electronic engineering , statistics , mathematics , physics , artificial intelligence , decoding methods , acoustics , engineering , arithmetic , art , literature
The dual‐branch selection‐and‐stay combining (SSTC) is analyzed for diversity reception on independent and correlated Nakagami‐ m fading channels, where the conventional selection combining (SC) is employed only at the switching instance, and the receiver uses the selected branch till its signal‐to‐noise ratio (SNR) estimation is lower than a preset threshold. In this combining scheme, the receiver only needs to continuously estimate the SNR of the single selected branch. For the performance analysis of SSTC, the switching rate and the average bit error rates (BERs) of different binary coherent and non‐coherent modulations are evaluated. Numerical results based on the analysis and simulations are illustrated. According to the analysis and numerical results, the SSTC outperforms the existing switch‐and‐stay combining in the senses of the average BER and switching rate. Copyright © 2011 John Wiley & Sons, Ltd.