Title :
A cumulant based DOA estimation for S-CDMA with decorrelator in spatial colored noise
Author :
Yang, Wei ; Cheng, Shixin
Author_Institution :
Sch. of Electron. & Inf. Eng., Northern Jiaotong Univ., Beijing, China
Abstract :
The conventional direction of arrival (DOA) detection algorithm is generally based on the second-order spectrum estimation while assuming that the noise is additive white Gaussian noise (AWGN). Concentrating on spatially colored noise of unknown spectrum quality, which is more realistic in any scenario, a novel high-order cumulant MUSIC DOA estimation algorithm for synchronous CDMA system with decorrelator as been proposed. The proposed algorithm not only has the advantages that the DOA of multipath signals can he estimated independently by eliminating all the other resolvable multipath signal interference but while on spatially colored noise case the proposed algorithm estimates DOAs of the decoupled multipath signal more effectively and accurately than the conventional second-order MUSIC algorithm.
Keywords :
AWGN; code division multiple access; decorrelation; direction-of-arrival estimation; higher order statistics; multipath channels; multiuser detection; radiofrequency interference; signal classification; spread spectrum communication; AWGN; MUSIC DOA estimation algorithm; S-CDMA; additive white Gaussian noise; cumulant based DOA estimation; decorrelator; direction of arrival detection algorithm; high-order cumulant; multipath signal interference; second-order MUSIC algorithm; second-order spectrum estimation; spatial colored noise; spatially colored noise; spectrum quality; AWGN; Additive white noise; Code division multiplexing; Colored noise; Decorrelation; Detection algorithms; Direction of arrival estimation; Gaussian noise; Multiple signal classification; Spectral analysis;
Conference_Titel :
Spread Spectrum Techniques and Applications, 2002 IEEE Seventh International Symposium on
Print_ISBN :
0-7803-7627-7
DOI :
10.1109/ISSSTA.2002.1048605
