Title :
Distributed subchannel and timeslot allocation in multi-relay cellular OFDMA system
Author :
Yu, Caihong ; Hao, Li
Author_Institution :
Southwest Jiaotong Univ. (SWJTU), Chengdu, China
Abstract :
In this paper, we present a distributed resource allocation algorithm in cellular Orthogonal Frequency Division Multiple Access (OFDMA) system with multiple relays. Each frame is composed of two time-division sub-frames and each subframe involves multiple subchannels including several continuous subcarriers. The subchannels are divided into several blocks that are allocated to different relays adaptively. The simulation results show that the proposed scheme can not only decrease the amount of required feedback information and algorithm complexity, but also achieve a very low outage probability for a given the minimum data rate requirement.
Keywords :
OFDM modulation; cellular radio; channel allocation; diversity reception; frequency division multiple access; OFDMA; distributed resource allocation; distributed subchannel allocation; multi-relay cellular system; orthogonal frequency division multiple access; time division subframe; timeslot allocation; Fading; Frequency domain analysis; OFDM; Relays; Resource management; Signal to noise ratio; Throughput; Allocation; Distributed; Multi-relay; OFDMA; Subchannel; Timeslot;
Conference_Titel :
Signal Design and its Applications in Communications (IWSDA), 2011 Fifth International Workshop on
Conference_Location :
Guilin
Print_ISBN :
978-1-61284-047-5
DOI :
10.1109/IWSDA.2011.6159426
