Noncoherent unitary space-time modulated DSSS systems in multipath channels

In this paper, in order to effectively apply unitary space-time modulation to the direct-sequence spread-spectrum multiple-access (DSSS-MA) networks, we propose a low-rate, noncoherent, unitary, and space-time modulated DSSS system supporting any number of transmit antennas based on Walsh matrices....

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Bibliographic Details
Published inJournal of communications and networks Vol. 14; no. 2; pp. 206 - 212
Main Authors Cheun, Kyungwhoon, Kim, Jeongchang, Kim, Youhan, Choi, Soongyoon
Format Journal Article
LanguageEnglish
Published Editorial Department of Journal of Communications and Networks 01.04.2012
한국통신학회
Subjects
Bandwidth
Bit error rate
Detectors
Direct-sequence spread-spectrum (DSSS)
noncoherent
Receiving antennas
Spread spectrum communication
transmit diversity
Transmitting antennas
unitary space-time modulation
전자/정보통신공학
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Summary:In this paper, in order to effectively apply unitary space-time modulation to the direct-sequence spread-spectrum multiple-access (DSSS-MA) networks, we propose a low-rate, noncoherent, unitary, and space-time modulated DSSS system supporting any number of transmit antennas based on Walsh matrices. The proposed scheme simultaneously performs bandwidth spreading and space-time coding and outperforms those using high-rate, conventional unitary space-time constellations. Furthermore, the proposed scheme allows for a simple detector structure based on fast Walsh transforms.
Bibliography:G704-000784.2012.14.2.006
ISSN:1229-2370
1976-5541
DOI:10.1109/JCN.2012.6253070