Title :
Transmit Power Allocation Scheme for Cooperative Wireless Networks based on Spatial Multiplexing
Author :
Jing Zhang ; Fu, Xing ; Tao, Xiaofeng ; Xu, Jin ; Ping Zhang
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
Power allocation problem in Decode and Forward (DF) wireless cooperative multiplexing communication systems is considered in this paper. We first derived an analytical bit error rate (BER) expression with BPSK modulation at the relays and Zero Forcing Successive Interference Cancellation (ZF-SIC) algorithm at the destination, which gives deep insight to how different power assignments among the source and the relays influence the BER performance. Based on this expression, a new power allocation algorithm is developed by minimizing BER under different power constraints, the effectiveness of which has been validated by both theoretical analysis and Monte Carlo simulations.
Keywords :
Monte Carlo methods; channel allocation; error statistics; interference suppression; phase shift keying; radio access networks; radiofrequency interference; wireless channels; BER performance; BPSK modulation; Monte Carlo simulations; analytical bit error rate; decode and forward wireless cooperative multiplexing communication systems; power allocation; zero forcing successive interference cancellation algorithm; Algorithm design and analysis; Binary phase shift keying; Bit error rate; Communication systems; Decoding; Error analysis; Performance analysis; Power system relaying; Wireless communication; Wireless networks;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2007. PIMRC 2007. IEEE 18th International Symposium on
Conference_Location :
Athens
Print_ISBN :
978-1-4244-1144-3
Electronic_ISBN :
978-1-4244-1144-3
DOI :
10.1109/PIMRC.2007.4394511
