Title :
An improved MUSIC algorithm for estimation of time delays in asynchronous DS-CDMA systems
Author :
Östman, Thomas ; Parkvall, Stefan ; Ottersten, Björn
Author_Institution :
Dept. of Signals, Sensors, & Syst., R. Inst. of Technol., Stockholm, Sweden
fDate :
11/1/1999 12:00:00 AM
Abstract :
The problem of near-far resistant time-delay estimation in an asynchronous direct-sequence code-division multiple-access system is considered, and by better exploiting the structure of the problem, estimators superior to previously known techniques are obtained. For a typical numerical example, a gain in signal-to-noise ratio of approximately 3 dB is obtained
Keywords :
code division multiple access; delay estimation; spread spectrum communication; synchronisation; asynchronous DS-CDMA systems; asynchronous direct-sequence code-division multiple-access system; improved MUSIC algorithm; near-far resistant time-delay estimation; signal-to-noise ratio; Delay effects; Delay estimation; Multiaccess communication; Multiple signal classification; Phase shift keying; Propagation delay; Sensor systems; Signal to noise ratio; Spread spectrum communication; Timing;
Journal_Title :
Communications, IEEE Transactions on
