On the asymptotic SIR of (WL)MMSESIC for imperfect CSI

Author

Lampe, Alexander ; Huber, Johannes B.

Author_Institution

LIT, Erlangen-Nurnberg Univ., Erlangen, Germany

fYear

2002

fDate

2002

Firstpage

448

Abstract

Using Wiener filters for pilot symbol aided channel estimation, and MMSE interference suppression filters, single user decoding as well as successive interference cancellation (SIC) for multiuser detection of QPSK data symbols, the SIR at the MMSE filter outputs is given for DS-CDMA systems with random spreading sequences in the asymptotic regime accounting for the exact covariance matrix of the channel estimation errors. Based on this, equivalent results for BPSK signaling applying widely linear (WL) MMSE interference suppression filters, single user decoding and SIC are solved.

Keywords

Rayleigh channels; Wiener filters; channel estimation; code division multiple access; covariance matrices; interference suppression; least mean squares methods; multiuser detection; quadrature phase shift keying; spread spectrum communication; BPSK signaling; DS-CDMA systems; MMSE interference suppression filters; QPSK data symbols; Rayleigh fading channels; SIC; SIR; Wiener filters; asymptotic SIR; covariance matrix; imperfect CSI; multiuser detection; pilot symbol aided channel estimation; random spreading sequences; single user decoding; successive interference cancellation; widely linear filters; Channel estimation; Covariance matrix; Decoding; Interference cancellation; Interference suppression; Multiaccess communication; Multiuser detection; Quadrature phase shift keying; Silicon carbide; Wiener filter;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory, 2002. Proceedings. 2002 IEEE International Symposium on

Print_ISBN

0-7803-7501-7

Type

conf

DOI

10.1109/ISIT.2002.1023720

Filename

1023720