Blind multiuser interference cancellation in multicarrier CDMA: a linearly constrained constant modulus approach

Author

Míguez, Joaquín ; Castedo, Luis

Author_Institution

Dept. of Electron. e Sistemas, Coruna Univ., Spain

Volume

2

fYear

1998

fDate

8-11 Sep 1998

Firstpage

523

Abstract

We investigate a constant modulus based criterion for the blind suppression of multiple access interference (MAI) in multicarrier code division multiple access (MC CDMA) systems. The method, termed linearly constrained constant modulus (LCCM), presents the same performance as minimum mean square error (MMSE) receivers with the only requirement of a rough estimate of the desired user code and timing. Therefore, it overcomes the main limitation of existing blind approaches based on the linearly constrained minimum variance (LCMV) criterion which are tightly dependent on this estimate

Keywords

code division multiple access; interference suppression; multiuser channels; radio receivers; radiofrequency interference; spread spectrum communication; MMSE receivers; blind multiuser interference cancellation; linearly constrained constant modulus; linearly constrained minimum variance; minimum mean square error; multicarrier CDMA; multicarrier code division multiple access; multiple access interference; performance; timing; user spreading code; AWGN; Adaptive algorithm; Adaptive filters; Interference cancellation; Interference constraints; Mean square error methods; Multiaccess communication; Multiple access interference; Robustness; Timing;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 1998. The Ninth IEEE International Symposium on

Conference_Location

Boston, MA

Print_ISBN

0-7803-4872-9

Type

conf

DOI

10.1109/PIMRC.1998.734254

Filename

734254