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Exact BER Expressions for Decode-and-Forward Relaying in Rayleigh Fading Channels  

Lee, In-Ho (한양대학교 전자전기제어계측공학과 이동통신망연구실)
Kim, Dong-Woo ( 한양대학교 전자컴퓨터공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.12A, 2007 , pp. 1244-1250 More about this Journal
Abstract
User cooperation provides high reliability in wireless communication systems by employing relay nodes to transmit the same information. In this paper, a bit error rate (BER) study is presented for decode-and-forward (DF) relaying for user cooperation in independent and identically distributed Rayleigh fading channels. For an arbitrary number of relays, exact and closed-form expressions of the BER are proposed for M-ary PAM (Pulse Amplitude Modulation), QAM (Quadrature Amplitude Modulation) and PSK (Phase Shift Keying), respectively. It is also shown that the analytic results are perfectly matched with the simulated ones.
Keywords
Decode-and-forward; Blt error rate; Raylelgh fading; PAM; QAM; PSK;
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