TY - GEN
T1 - Power allocation strategies for distributed space-time codes in amplify-and-forward mode
AU - Maham, Behrouz
AU - Hjørungnes, Are
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2008
Y1 - 2008
N2 - The idea of space-time coding, devised for multiple-antenna systems, can be applied to communication over a wireless relay network. In this paper, we derive an approximate formula for the bit error rate (BER) of distributed space-time codes in amplify-and-forward (AF) mode, in which each relay transmits a scaled version of the linear combination of its received symbols. Assuming M-PSK or M-QAM modulated, full-rate, and full-diversity space-time codes, we derive two power allocation strategies minimizing the approximate BER expressions, for constrained transmit power. Our analytical results have been verified by simulation results.
AB - The idea of space-time coding, devised for multiple-antenna systems, can be applied to communication over a wireless relay network. In this paper, we derive an approximate formula for the bit error rate (BER) of distributed space-time codes in amplify-and-forward (AF) mode, in which each relay transmits a scaled version of the linear combination of its received symbols. Assuming M-PSK or M-QAM modulated, full-rate, and full-diversity space-time codes, we derive two power allocation strategies minimizing the approximate BER expressions, for constrained transmit power. Our analytical results have been verified by simulation results.
KW - Amplify-and-forward
KW - Cooperation
KW - Distributed space-time codes
KW - Power allocation
UR - http://www.scopus.com/inward/record.url?scp=52949151965&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=52949151965&partnerID=8YFLogxK
U2 - 10.1109/IWCMC.2008.156
DO - 10.1109/IWCMC.2008.156
M3 - Conference contribution
AN - SCOPUS:52949151965
SN - 9781424422029
T3 - IWCMC 2008 - International Wireless Communications and Mobile Computing Conference
SP - 905
EP - 909
BT - IWCMC 2008 - International Wireless Communications and Mobile Computing Conference
T2 - International Wireless Communications and Mobile Computing Conference, IWCMC 2008
Y2 - 6 August 2008 through 8 August 2008
ER -