Equalization technique of inner chip distortion on multi-carrier CDMA scheme

Author

Watanabe, Soichi ; Sato, Takuro ; Abe, Takeo

Author_Institution

Niigata Inst. of Technol., Japan

Volume

3

fYear

1999

fDate

36342

Firstpage

2418

Abstract

This paper describes an equalization scheme of an inner chip distortion which is caused by multipath fading on a multi-carrier CDMA system. The proposed equalization scheme uses an auto-regressive process model (AR) and prediction parameters of the AR are obtained by a recursive least square algorithm (RLS). Simulation results of the multi-carrier CDMA system using the inner chip equalizer clarified that the BER is 1.1×10^-2 at 20 dB of Eb/N0 under the condition of two multipath fading environments of which the delay time is 2 μsec and the fading frequency is 100 Hz. In the evaluation of the system parameters of the multi-carrier CDMA, the number of subchannels are 16, the data rate is 32 kbps and the spreading ratio is 16

Keywords

Rayleigh channels; autoregressive processes; code division multiple access; delays; equalisers; error statistics; least squares approximations; multipath channels; prediction theory; 2 mus; 32 kbit/s; AR parameters; BER; RLS; Rayleigh fading; auto-regressive process model; data rate; delay time; equalization; fading frequency; inner chip distortion; multi-carrier CDMA; multipath fading; multipath propagation; prediction parameters; recursive least square algorithm; simulation results; spreading ratio; subchannels; Multiaccess communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1999 IEEE 49th

Conference_Location

Houston, TX

ISSN

1090-3038

Print_ISBN

0-7803-5565-2

Type

conf

DOI

10.1109/VETEC.1999.778509

Filename

778509