Capacity of the linear decorrelating detector for QS-CDMA

Ghauri, Irfan;Iltis, Ronald A
IEEE Transactions on Communications, Volume 45, N°9, September 1997

We study the performance and capacity ofaquasi-synchronous code division multiple access (QS-CDMA) cellular system employing the decorrelating detector. It is assumed that each of N users has a GPS generated local clock, and attempts to transmit in synchrony with the other users in its cell. The detector makes use of the small timing uncertainties to build the interference signal space and perfectly cancel the interference. Results are compared with those of an adaptive MSE receiver. It is shown that when the LMS adaptive algorithm is employed the mean-squared-error misadjustment signi cantly a ects the receiver performance. Finally, system capacities in terms of users/cell are evaluated.

Systèmes de Communication
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