Distributed subchannel and timeslot allocation in multi-relay cellular OFDMA system

Author

Yu, Caihong ; Hao, Li

Author_Institution

Southwest Jiaotong Univ. (SWJTU), Chengdu, China

fYear

2011

fDate

10-14 Oct. 2011

Firstpage

201

Lastpage

204

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/IWSDA.2011.6159426

Filename

6159426