Title :
Dynamic power allocation for multi-hop linear non-regenerative relay networks
Author :
Huang, Tingshan ; Chen, Wen ; Li, Jun
Author_Institution :
Dept. of Electron. Eng., Shanghai Jiaotong Univ., Shanghai, China
Abstract :
In this paper, we analyze the optimal power allocation for the multihop linear nonregenerative relay cooperative system. The expression for the end-to-end SNR is deprived in terms of power allocation factors to each node and the channel state information, based on which, we obtain the optimal power allocation factors for each nodes by maximizing the end-to-end SNR subject to the total power constraint. Numerical simulations show that the theoretical prediction matches the simulation, and dynamic power allocation outperforms the fixed power allocation scheme.
Keywords :
channel allocation; diversity reception; numerical analysis; wireless channels; channel state information; cooperative system; dynamic power allocation; multihop linear nonregenerative relay network; numerical simulation; Communication systems; Fading; Frame relay; Power system relaying; Power system reliability; Routing; Spread spectrum communication; Telecommunication network reliability; Wireless communication; Wireless networks; amplify-and-forward; end-to-end SNR; multihop linear relay networks; power allocation;
Conference_Titel :
Communications and Networking in China, 2009. ChinaCOM 2009. Fourth International Conference on
Conference_Location :
Xian
Print_ISBN :
978-1-4244-4337-6
Electronic_ISBN :
978-1-4244-4337-6
DOI :
10.1109/CHINACOM.2009.5339816
