DocumentCode :
1890671
Title :
An improved blind adaptive MMSE receiver for fast fading DS-CDMA channels
Author :
Chen, Wanshi ; Mitra, Urbashi
Author_Institution :
Ericsson Wireless Commun., San Diego, CA, USA
Volume :
2
fYear :
2001
fDate :
2001
Firstpage :
758
Abstract :
In this paper, an improved correlation matrix estimation scheme for blind adaptive MMSE receivers is provided. The new scheme takes advantage of the fact that the desired linear receiver can be expressed as a function of the interference correlation matrix only, rather than the total data correlation matrix. A theoretical analysis is performed for the flat fading case which predicts that the new estimation scheme will result in significant performance improvement. Blind adaptive MMSE receivers with the new estimation scheme appear to achieve performance comparable to the training-sequence based adaptive MMSE receivers. Detailed computer simulations for the fast multipath fading environment verify that the proposed scheme yields strong performance gain over previous methods
Keywords :
adaptive signal detection; code division multiple access; correlation methods; fading channels; least mean squares methods; matrix algebra; mobile radio; radio receivers; spread spectrum communication; DS-CDMA communications; MMSE; blind adaptive receivers; correlation matrix estimation; direct-sequence code-division multiple access; flat fading; interference correlation matrix; minimum mean squared error; performance; Binary phase shift keying; Computer simulation; Delay; Detectors; Fading; Interference; Multiaccess communication; Performance analysis; Robustness; Vectors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-7206-9
Type :
conf
DOI :
10.1109/GLOCOM.2001.965520
Filename :
965520
Link To Document :
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