Abstract
The exact average bit error probability (BEP) of decode-and-forward (DF) cooperative systems with relay selection for binary phase-shift keying (BPSK) signals in Nakagami-m fading channels is derived. Two types of relay selection schemes, i.e., signal-to-noise ratio (SNR)-based relay selection and log-likelihood-ratio-based relay selection, are investigated, assuming that there are no feedback channels from the destination to the relays. Two types of receivers, i.e., a \lambda-maximal ratio combining receiver and a piecewise linear receiver, are examined. The BEP analysis for DF cooperative systems employing BPSK signals is used to derive symbol error probability upper bounds of DF cooperative systems with SNR-based relay selection for quadrature phase-shift keying and 16-quadrature amplitude modulation (16-QAM) signals.
Original language | English |
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Article number | 6844860 |
Pages (from-to) | 1882-1894 |
Number of pages | 13 |
Journal | IEEE Transactions on Vehicular Technology |
Volume | 64 |
Issue number | 5 |
DOIs | |
State | Published - 1 May 2015 |
Keywords
- Cooperative diversity
- Nakagami-mfading
- decode-and-forward (DF)
- relay selection