Simple space-time coded SS-CDMA systems capable of perfect MUI/ISI elimination

Author

Barbarossa, Sergio ; Cerquetti, Francesca

Author_Institution

Inf. & Commun. Dept., Rome Univ., Italy

Volume

5

Issue

12

fYear

2001

Firstpage

471

Lastpage

473

Abstract

In this letter we propose a very simple strategy for combining space-time block coding (STBC) with code division multiple access (CDMA) to be used in single-user links or in broadcasting over time-dispersive channels. The proposed system provides the desired space diversity gain and is capable of perfect cancellation of multiuser interference (MUI) and intersymbol interference (ISI), using a very simple receiver structure. The advantage is obtained by simply incorporating cyclic prefixes in the user codes. We provide a theoretical analysis, verified via simulation results, and a comparison between CDMA and OFDMA systems incorporating STBC.

Keywords

block codes; broadcast channels; code division multiple access; dispersive channels; diversity reception; interference suppression; intersymbol interference; radio receivers; radiofrequency interference; spread spectrum communication; time-varying channels; ISI; STBC; broadcasting; code division multiple access; combining space-time block coding; cyclic prefixes; intersymbol interference; multiuser interference; perfect MUI/ISI elimination; perfect cancellation; receiver structure; simple space-time coded SS-CDMA systems; single-user links; space diversity gain; time-dispersive channels; user codes; Block codes; Broadcasting; Dispersion; Diversity methods; Fading; Intersymbol interference; Multiaccess communication; Multiuser detection; OFDM; Transmitting antennas;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/4234.974489

Filename

974489