Title :
A semi-distributed power allocation for the cooperative relay in OFDMA network
Author :
Zechun, Lu ; Zhenmin, Zhao ; Xiangming, Wen ; Yong, Sun ; Wei, Li
Author_Institution :
Sch. of Inf. & Commun. Eng., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this paper we propose a semi-distributed power allocation algorithm(S-DPA) in the downlink of cellular OFDMA-relay network. This algorithm introduces non-cooperative game theory in the second time subslot for relays and TS algorithm in the first time subslot for base stations. TS algorithm can match the data rate of two-hop links for each relay. Simulation results show that compared with equal power allocation algorithm, this algorithm not only improves the average throughput, but also reduces system energy consumption.
Keywords :
OFDM modulation; cellular radio; cooperative communication; frequency division multiple access; game theory; average throughput; base stations; cellular OFDMA-relay network; cooperative relay; data rate; first time subslot; noncooperative game theory; second time subslot; semidistributed power allocation algorithm; system energy consumption reduction; two-hop links; Interference; OFDM; Relays; Resource management; Throughput; Vectors; Wireless communication;
Conference_Titel :
Communication Technology (ICCT), 2011 IEEE 13th International Conference on
Conference_Location :
Jinan
Print_ISBN :
978-1-61284-306-3
DOI :
10.1109/ICCT.2011.6158016
