Subcarrier Allocating Algorithm in MB-OFDM UWB System

Author

Zhang, Shibing ; Li, Xue ; Bao, Zhihua

Author_Institution

Sch. of Electron. & Inf., Nantong Univ., Nantong, China

fYear

2011

fDate

23-25 Sept. 2011

Firstpage

1

Lastpage

4

Abstract

This paper focuses on the subcarrier allocation for multi-user in multi-band orthogonal frequency division multiplexing ultra-wideband (MB-OFDM UWB) system. A novel allocating algorithm is proposed to minimize the total transmission power subjective to a given bit error rate (BER) and user´s data rate. The algorithm is divided into three parts, cluster selection, the bit allocation and adjustment of cluster-allocation results. The clustering scheme is used to reduce the complexity of the algorithm. Simulation results show that the algorithm has more than 1 dB gain over other algorithms in power per bit and bit error rate.

Keywords

OFDM modulation; error statistics; pattern clustering; ultra wideband communication; BER; MB-OFDM UWB system; bit allocation; bit error rate; cluster selection; cluster-allocation adjustment; clustering scheme; multiband orthogonal frequency division multiplexing; subcarrier allocating algorithm; ultrawideband system; user data rate; Adaptive systems; Bit error rate; Clustering algorithms; OFDM; Power demand; Resource management; Satellite broadcasting;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on

Conference_Location

Wuhan

ISSN

2161-9646

Print_ISBN

978-1-4244-6250-6

Type

conf

DOI

10.1109/wicom.2011.6036701

Filename

6036701