A multi-carrier CDMA system using a concatenated orthogonal/PN spreading scheme

Author

Youn, Won-Sik ; Freiberg, Lorenz ; Bhargava, Vijay K.

Author_Institution

Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada

Volume

1

fYear

1996

fDate

26-29 May 1996

Firstpage

202

Abstract

Direct sequence code division multiple access (DS-CDMA) is currently of great interest for mobile communications applications. It provides reasonable privacy and security, and good immunity to interference and fading. We propose a new communication scheme combining both multi-carrier (MC) modulation and DS-CDMA with a concatenated orthogonal/pseudo-noise (PN) spreading scheme. This scheme incorporates the advantages of both DS-CDMA with a concatenated scheme, and an MC modulation technique to combat the effect of a multipath fading channel. The system performance is investigated for a single correlator and a maximal ratio combiner. The performance analysis is carried out under a multiuser and multipath Rayleigh/Rician fading environment. It is shown that the proposed system outperforms the MC-CDMA system with a conventional PN sequence

Keywords

Rayleigh channels; Rician channels; cellular radio; code division multiple access; concatenated codes; correlators; fading; frequency division multiplexing; indoor radio; land mobile radio; modulation; multipath channels; pseudonoise codes; spread spectrum communication; OFDM; PN sequence; Rayleigh/Rician fading environment; cellular environment; concatenated orthogonal/PN spreading scheme; correlator; direct sequence code division multiple access; indoor picocellular environment; interference immunity; maximal ratio combiner; mobile communications; multicarrier CDMA system; multicarrier modulation; multipath fading channel; multiuser environment; orthogonal frequency division multiplexing; performance analysis; privacy; security; system performance; Communication system security; Concatenated codes; Direct-sequence code-division multiple access; Diversity reception; Fading; Interference; Mobile communication; Multiaccess communication; Privacy; System performance;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 1996. Canadian Conference on

Conference_Location

Calgary, Alta.

ISSN

0840-7789

Print_ISBN

0-7803-3143-5

Type

conf

DOI

10.1109/CCECE.1996.548072

Filename

548072