Title :
Performance Analysis of Adaptive M-QAM for Rayleigh Fading Cooperative Systems
Author :
Nechiporenko, T. ; Phan, Khoa T. ; Tellambura, Chintha ; Nguyen, Ha H.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Alberta, Edmonton, AB
Abstract :
The use of constant-power, rate-adaptive M-QAM transmission with an amplify-and-forward cooperative system is proposed. The upper bound expressions are derived for the outage probability, achievable spectral efficiency, and error rate performance for the amplify-and-forward cooperative system over both independent and identically distributed (i.i.d.) and non-i.i.d. Rayleigh fading environments. The analysis is based on an accurate upper bound on the total effective signal-to- noise ratio SNR at the destination. Adaptive continuous rate M-QAM achieves a capacity that comes within a constant gap of the Shannon capacity of the channel, but adaptive discrete rate M-QAM suffers additional performance penalties.
Keywords :
Rayleigh channels; channel capacity; error statistics; quadrature amplitude modulation; Rayleigh fading cooperative systems; Shannon channel capacity; adaptive discrete rate M-QAM; amplify-and-forward cooperative system; constant-power M-QAM transmission; error rate performance; outage probability; rate-adaptive M-QAM transmission; spectral efficiency; Channel capacity; Closed-form solution; Cooperative systems; Error analysis; Fading; Peer to peer computing; Performance analysis; Rayleigh channels; Relays; Upper bound;
Conference_Titel :
Communications, 2008. ICC '08. IEEE International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2075-9
Electronic_ISBN :
978-1-4244-2075-9
DOI :
10.1109/ICC.2008.638
