Multiple access interference (MAI) canceller enhanced RAKE receiver for asynchronous CDMA system in multipath channels

Author

Chitamu, P.J.

Author_Institution

Dept. of Electr. Eng., Durban-Westville Univ., South Africa

Volume

1

fYear

1999

fDate

1999

Firstpage

239

Abstract

We propose and study a receiver structure for an asynchronous CDMA system which incorporates a MAI canceller in a RAKE receiver structure. The strong MAI components are first estimated along with the channel impulse responses and separate operations of MAI cancellation and RAKE combining performed. Results show that for a CDMA channel loading of about 17%, the proposed receiver structure has a better BER performance than when either the MAI canceller or the RAKE receiver is used on its own by over 2 dB for the MAI canceller and by over 4 dB for the RAKE receiver at 10 dB E_b/N₀

Keywords

code division multiple access; error statistics; interference suppression; land mobile radio; multipath channels; multiuser channels; radio access networks; radio receivers; radiofrequency interference; radiotelephony; transient response; BER performance; MAI canceller; RAKE combining; RAKE receiver; UHF band; asynchronous CDMA system; channel impulse response; channel loading; mobile radio systems; multipath channels; multiple access interference canceller; radiotelephone network; receiver structure; wireless access system; Africa; Bit error rate; Channel estimation; Fading; Interference cancellation; Multiaccess communication; Multipath channels; Multiple access interference; RAKE receivers; Reactive power;

fLanguage

English

Publisher

ieee

Conference_Titel

Africon, 1999 IEEE

Conference_Location

Cape Town

Print_ISBN

0-7803-5546-6

Type

conf

DOI

10.1109/AFRCON.1999.820804

Filename

820804