Blind speech user interference cancellation for high speed downlink packet access

Author

Wang, Haifeng ; Lilleberg, Jorma

Author_Institution

NOKIA, Oulu, Finland

Volume

1

fYear

2004

fDate

5-8 Sept. 2004

Firstpage

385

Abstract

A novel blind speech user interference cancellation receiver is proposed for high speed downlink packet access (HSDPA). The hard-decision HSDPA signals with known spreading codes and the soft-decision speech user signals with unknown spreading codes are estimated by a full Walsh transform correlator instead of the conventional RAKER. By regenerating and subtracting the speech user interference from the received signal, the desired HSDPA estimates may be further improved by multistage processing. Numerical results prove that the system performance can be considerably enhanced.

Keywords

Walsh functions; codes; correlation methods; interference suppression; multi-access systems; packet radio networks; parameter estimation; radio receivers; radiofrequency interference; RAKE receiver; Walsh transform correlator; blind speech user interference cancellation receiver; hard-decision HSDPA signals; high speed downlink packet access; multiple access interference; multistage processing; soft-decision speech user signals; spreading codes; Correlators; Detectors; Downlink; Interference cancellation; Modulation coding; Multiaccess communication; Multiple access interference; RAKE receivers; Speech coding; Speech processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on

Print_ISBN

0-7803-8523-3

Type

conf

DOI

10.1109/PIMRC.2004.1370899

Filename

1370899