Orthogonal multicarrier techniques applied to direct sequence spread spectrum CDMA systems

Author

Chouly, Antoine ; Brajal, Américo ; Jourdan, Sabine

Author_Institution

Lab. d´´Electron. Philips, Limeil-Brevannes, France

fYear

1993

fDate

29 Nov-2 Dec 1993

Firstpage

1723

Abstract

We design a new scheme for DS-CDMA applications. The basic principle consists in applying orthogonal multicarrier transmission to DS spread spectrum systems. Several algorithms for estimating the equalizer coefficients are investigated in order to reduce the interuser interference due to multipath propagation and cross-correlation between the code sequences. The resulting system achieves high robustness against channel impairments and outperforms the conventional single-carrier DS-CDMA system

Keywords

code division multiple access; interference suppression; radiofrequency interference; random noise; spread spectrum communication; telecommunication channels; white noise; AWGN channels; CDMA systems; algorithms; channel impairments; code sequences; cross-correlation; direct sequence spread spectrum; equalizer coefficients; interuser interference reduction; multipath propagation; orthogonal multicarrier techniques; orthogonal multicarrier transmission; AWGN; Detectors; Downlink; Equalizers; Fading; Frequency; Interference; Multiaccess communication; Robustness; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1993, including a Communications Theory Mini-Conference. Technical Program Conference Record, IEEE in Houston. GLOBECOM '93., IEEE

Conference_Location

Houston, TX

Print_ISBN

0-7803-0917-0

Type

conf

DOI

10.1109/GLOCOM.1993.318364

Filename

318364