Title :
SER and Optimal Power Allocation for DF Cooperative Communications over Nakagami-m Fading Channels
Author :
Tsai, Ming-Hung ; Lee, Yinman
Author_Institution :
Grad. Inst. of Commun. Eng., Nat. Chi Nan Univ., Puli
Abstract :
In this paper, we analyze the symbol-error-rate (SER) performance of decode-and-forward (DF) cooperative communications over Nakagami-m fading channels. For the classical three-node cooperation model, which includes a source, a relay and a destination, the exact SER expressions for M-phase shift keying (PSK) and M-quadrature amplitude modulation (QAM) are derived. For easy usage, we provide asymptotic approximations for the SER as well. In addition, optimal power allocation is investigated based on the derived asymptotic SER expressions. Simulations are finally provided to verify the correctness of our analysis.
Keywords :
Nakagami channels; approximation theory; channel allocation; cooperative systems; decoding; Nakagami-m fading channel; SER performance; asymptotic approximation; decode-forward cooperative communication; optimal power allocation; symbol-error-rate; Amplitude modulation; Analytical models; Decoding; Fading; Performance analysis; Phase shift keying; Power engineering and energy; Protocols; Quadrature amplitude modulation; Relays;
Conference_Titel :
Vehicular Technology Conference, 2008. VTC Spring 2008. IEEE
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-1644-8
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2008.264
