BER performance of multicarrier spread spectrum chip-level differential detection in multipath fading channels

Author

Lijun, Song ; Youxi, Tang ; Shaoqian, Li

Author_Institution

Nat. Key Lab of Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

Volume

1

fYear

2005

fDate

13-17 March 2005

Firstpage

222

Abstract

A novel differential detection method in frequency domain spread spectrum systems, called multicarrier spread spectrum chip-level differential detection (MC-SS-CLDD), is proposed. The moment generating function (MGF) of the decision variable and a saddlepoint approximation method are exploited to analyze the BER performance of MC-SS-CLDD. The results of analysis and simulation indicate that, if the coherent bandwidth of the channel does not exceed the occupied bandwidth of two subcarriers, MC-SS-CLDD exhibits a better performance in making the system resistant to frequency-selective fading in the case of narrower channel coherent bandwidth.

Keywords

OFDM modulation; code division multiplexing; differential detection; error statistics; fading channels; multipath channels; spread spectrum communication; BER performance; MC-SS-CLDD; channel coherent bandwidth; code division multiplexing; decision variable moment generating function; frequency domain spread spectrum systems; frequency-selective fading; multicarrier spread spectrum chip-level differential detection; multipath fading channels; orthogonal frequency division multiplexing; saddlepoint approximation method; Bandwidth; Bit error rate; Fading; Fluctuations; Frequency domain analysis; Intersymbol interference; Performance analysis; Phase detection; Spread spectrum communication; Transceivers;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 2005 IEEE

ISSN

1525-3511

Print_ISBN

0-7803-8966-2

Type

conf

DOI

10.1109/WCNC.2005.1424503

Filename

1424503