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|Title:||Adaptive delay tracking in asynchronous multiuser CDMA systems|
|Authors:||Lim, Teng Joon |
Rasmussen, Lars K.
|Source:||Lim, Teng Joon,Rasmussen, Lars K. (1996). Adaptive delay tracking in asynchronous multiuser CDMA systems. IEEE International Symposium on Spread Spectrum Techniques & Applications 3 : 1001-1005. ScholarBank@NUS Repository.|
|Abstract:||Published work on multiuser code division multiple access (CDMA) receivers often assume knowledge of most system parameters. But in a mobile system, it is unreasonable to assume perfect knowledge of the propagation delays for each mobile user at all times since these delays change when mobile units move. Therefore a method for tracking propagation delays in a practical asynchronous CDMA system is needed. In this paper, we introduce a multiuser detector which is able to track time-varying delays directly, and converges in a stationary environment to the decorrelating detector. It has the advantage of being a blind algorithm, in the sense that it does not require the use of training sequences, and therefore represents a more practical approach than other adaptive multiuser detectors based on linear filtering.|
|Source Title:||IEEE International Symposium on Spread Spectrum Techniques & Applications|
|Appears in Collections:||Staff Publications|
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