Iterative algorithms for blind interference suppression in CDMA

Author

Ristaniemi, Tapani ; Joutsensalo, Jyrki

Author_Institution

Dept. of Math. Inf. Technol., Jyvaskyla Univ., Finland

fYear

1999

fDate

1999

Firstpage

203

Lastpage

206

Abstract

In this paper, we introduce a novel iterative algorithm for blind interference suppression for CDMA systems. The algorithm needs no knowledge of any codes and it is derived from an optimization criterion. More precisely, it can be regarded as a modification of blind linear MMSE algorithm which avoids channel and chip timing estimation. Also a simplified variant using a short training sequence is considered. Simulations show how the proposed methods have better interference suppression capabilities compared to conventional matched filter based single user detector and subspace based blind linear MMSE detector

Keywords

code division multiple access; interference suppression; iterative methods; least mean squares methods; multipath channels; optimisation; signal detection; CDMA systems; blind interference suppression; blind linear MMSE algorithm; iterative algorithm; optimization criterion; short training sequence; AWGN; Additive white noise; Delay; Detectors; Interference suppression; Iterative algorithms; Matched filters; Multiaccess communication; Signal processing algorithms; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Advances in Wireless Communications, 1999. SPAWC '99. 1999 2nd IEEE Workshop on

Conference_Location

Annapolis, MD

Print_ISBN

0-7803-5599-7

Type

conf

DOI

10.1109/SPAWC.1999.783054

Filename

783054