TY - GEN
T1 - SER performance analysis and optimum power allocation for decode-and-forward cooperation protocol in wireless networks
AU - Su, Weifeng
AU - Sadek, Ahmed K.
AU - Liu, K. J.Ray
PY - 2005
Y1 - 2005
N2 - In this paper, symbol-error-rate (SER) performance analysis is provided for a decode-and-forward cooperation protocol in wireless networks. We derive closed-form SER formulation for the cooperation system with PSK and QAM signals. Moreover, two SER upper bounds are established to show the asymptotic performance of the cooperation protocol, in which one of them is tight at high signal-to-noise ratio. Based on the SER performance analysis, we also determine the optimum power allocation for the cooperation systems. It turns out an equal power strategy is in general not optimum in the cooperation communications, and the optimum power allocation depends on the channel link quality. An interesting result is that in case that all channel links are available, the optimum power allocation does not depend on the direct link between source and destination, it depends only on the channel links related to the relay. Extensive simulations are performed to validate the theoretical results.
AB - In this paper, symbol-error-rate (SER) performance analysis is provided for a decode-and-forward cooperation protocol in wireless networks. We derive closed-form SER formulation for the cooperation system with PSK and QAM signals. Moreover, two SER upper bounds are established to show the asymptotic performance of the cooperation protocol, in which one of them is tight at high signal-to-noise ratio. Based on the SER performance analysis, we also determine the optimum power allocation for the cooperation systems. It turns out an equal power strategy is in general not optimum in the cooperation communications, and the optimum power allocation depends on the channel link quality. An interesting result is that in case that all channel links are available, the optimum power allocation does not depend on the direct link between source and destination, it depends only on the channel links related to the relay. Extensive simulations are performed to validate the theoretical results.
UR - https://www.scopus.com/pages/publications/24944453914
U2 - 10.1109/WCNC.2005.1424642
DO - 10.1109/WCNC.2005.1424642
M3 - Conference contribution
AN - SCOPUS:24944453914
SN - 0780389662
T3 - IEEE Wireless Communications and Networking Conference, WCNC
SP - 984
EP - 989
BT - 2005 IEEE Wireless Communications and Networking Conference, WCNC 2005
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2005 IEEE Wireless Communications and Networking Conference, WCNC 2005
Y2 - 13 March 2005 through 17 March 2005
ER -