Title :
Blind MMSE multipath combining for long-code CDMA systems
Author :
Zhang, Yongpeng ; Zhang, Ruifeng
Author_Institution :
Dept. of Electr. & Comput. Eng., Drexel Univ., Philadelphia, PA, USA
Abstract :
A blind MMSE multipath combining method for a RAKE receiver is proposed. The method make use of the data before and after the onset of the desired user´s transmission. By performing generalized eigendecomposition of the autocorrelation matrices of the post-RAKE signals in the two interval, an MMSE combiner for the desired user signal can be obtained without the need of the channel state information. The method does not require a precise model nor assume whiteness of the interference. An adaptive algorithm is also developed.
Keywords :
adaptive estimation; code division multiple access; correlation methods; eigenvalues and eigenfunctions; least mean squares methods; matrix algebra; multipath channels; radio receivers; MMSE; RAKE receiver; adaptive algorithm; autocorrelation matrices; blind multipath combining; generalized eigendecomposition; long-code CDMA systems; post-RAKE signals; Adaptive algorithm; Autocorrelation; Diversity reception; Fading; Interference; Matched filters; Multiaccess communication; Multipath channels; Multiuser detection; RAKE receivers;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on
Print_ISBN :
0-7803-7663-3
DOI :
10.1109/ICASSP.2003.1202560
