Title :
Performance analysis of semiblind channel estimation in long-code DS-CDMA systems
Author :
Li, Husheng ; Poor, H. Vincent
Author_Institution :
QUALCOMM Inc., San Diego, CA
Abstract :
The performance of second-order statistics (SOS)-based semiblind channel estimation in long-code direct-sequence code-division multiple-access systems is analyzed. The covariance matrix of second-order statistics estimates is obtained in the large system limit and is used to analyze the large-sample performance of two SOS-based semiblind channel estimation algorithms. A notion of blind estimation efficiency is also defined and is examined via simulation results
Keywords :
channel estimation; code division multiple access; codes; covariance matrices; spread spectrum communication; statistical analysis; covariance matrix; direct-sequence code-division multiple-access systems; large-sample performance; long-code DS-CDMA systems; performance analysis; second-order statistics; semiblind channel estimation; Channel estimation; Channel state information; Computational efficiency; Fading; Maximum likelihood estimation; Multiaccess communication; Performance analysis; Signal processing algorithms; Statistical analysis; Transmitters; Code-division multiple access (CDMA); semiblind channel estimation;
Journal_Title :
Signal Processing, IEEE Transactions on
DOI :
10.1109/TSP.2006.879287
