A study on quasi-synchronous CDMA based on selected PN signature sequences

Author

Kuno, Seiji ; Yamazato, Takaya ; Katayama, Masaaki ; Ogawa, Akira

Author_Institution

Dept. of Inf. Electron., Nagoya Univ., Japan

fYear

1994

fDate

4-6 Jul 1994

Firstpage

479

Abstract

The performance of quasi-synchronous CDMA (QS-CDMA) system, which can allow an increased timing error in synchronized access, is discussed. The QS-sequences are selected from an M-sequence set or a Gold-sequence set considering the cross-correlation property, and the average BER is calculated for the system with QS-sequences. As a result, the average BER of the system with QS-sequences is improved considerably compared with asynchronous CDMA when the access timing error is within a few chip durations

Keywords

code division multiple access; error statistics; pseudonoise codes; spread spectrum communication; synchronisation; Gold-sequence; M-sequence; PN signature sequences; QS-CDMA; QS-sequences; average BER; chip durations; cross-correlation; quasi-synchronous CDMA; spread spectrum modulation; synchronized access; timing error; Additive white noise; Base stations; Bit error rate; Code division multiplexing; Degradation; Fading; Interchannel interference; Modulation coding; Multiaccess communication; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Spread Spectrum Techniques and Applications, 1994. IEEE ISSSTA '94., IEEE Third International Symposium on

Conference_Location

Oulu

Print_ISBN

0-7803-1750-5

Type

conf

DOI

10.1109/ISSSTA.1994.379539

Filename

379539