Title :
Analysis of MUSIC-based delay estimators for direct-sequence code-division multiple-access systems
Author :
Chu, Li-Chung ; Mitra, Urbashi
Author_Institution :
Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA
fDate :
1/1/1999 12:00:00 AM
Abstract :
Most receiver designs for asynchronous direct-sequence code-division multiple-access (DS-CDMA) systems exploit timing information to simultaneously detect the desired signal and suppress the interference. In this paper, a previously proposed MUSIC delay estimation algorithm is considered which requires no initial information and no exhaustive search of the delays. Based on a Taylor series expansion, approximations of the first and second moments of the delay estimation error are derived for this MUSIC algorithm. The analysis is alternative and further to that previously performed
Keywords :
code division multiple access; delay estimation; interference suppression; mean square error methods; radio receivers; radiofrequency interference; series (mathematics); signal classification; signal detection; spread spectrum communication; DS-CDMA systems; MMSE; MUSIC-based delay estimators; Taylor series expansion; approximations; delay estimation algorithm; delay estimation error; direct-sequence code-division multiple-access; first moment; interference suppression; second moment; signal detection; timing information; Delay estimation; Interference suppression; Multiaccess communication; Multiple access interference; Multiple signal classification; Performance analysis; Signal design; Signal detection; Taylor series; Timing;
Journal_Title :
Communications, IEEE Transactions on
