Title :
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
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;
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
DOI :
10.1109/PIMRC.1998.734254
