A new multi-code high speed mobile radio transmission scheme using cyclic modified M-sequence

Author

Haroshi, H. ; Wu, Gang ; Taira, Kazumasa ; Hase, Yoshihiro ; Sasaoka, Hideichi

Author_Institution

Commun. Res. Lab., Minist. of Posts & Telecommun., Tokyo, Japan

Volume

3

fYear

1997

fDate

4-7 May 1997

Firstpage

1709

Abstract

This paper proposes a new parallel transmission scheme using cyclic codes generated from a modified M-sequence, which is biased with constant direct current (DC) on an M-sequence and inserted the guard chips before and after this biased M-sequence. In the proposed system, the orthogonality of the codes is kept not only between parallel transmission channels but also between direct and delayed waves within guard chips. The bit error rate (BER) performance was evaluated by computer simulations. As a result, the proposed system can transmit several Mbps in the high speed double spike Rayleigh fading channel with better quality in comparison with conventional multi-code CDM transmission

Keywords

Rayleigh channels; binary sequences; coding errors; cyclic codes; error statistics; fading; land mobile radio; multimedia communication; multipath channels; BER performance; Rayleigh fading channel; biased M-sequence; bit error rate; code orthogonality; computer simulations; constant direct current; cyclic codes; cyclic modified M-sequence; delayed waves; direct waves; guard chips; multi-code CDM transmission; multi-code high speed mobile radio transmission; multimedia mobile communication; multipath propagation; parallel transmission; parallel transmission channels; Bit error rate; Bit rate; Broadband communication; Delay effects; Fading; Frequency division multiplexing; Land mobile radio; Mobile communication; Multimedia communication; Propagation delay;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1997, IEEE 47th

Conference_Location

Phoenix, AZ

ISSN

1090-3038

Print_ISBN

0-7803-3659-3

Type

conf

DOI

10.1109/VETEC.1997.605850

Filename

605850