Patent ID: 7133412
Filing Date: 2006-11-07
Classification: H04B,H04L

Abstract:
1. A code division multiple access user equipment for use in receiving a plurality of data signals received over a shared spectrum, each received data signal experiencing a similar channel response, the user equipment comprising: means for receiving a combined signal of the received data signals over the shared spectrum; means for sampling the combined signal at a multiple of a chip rate of the data signals; means for estimating a channel response for the combined signal at the multiple of the chip rate; means for determining a cross correlation matrix using the estimated channel response; means for selecting a subblock of the cross correlation matrix; means for determining a Cholesky factor for the subblock; means for extending the Cholesky factor; means for determining the spread data vector using the extended Cholesky factor, a version of the channel response and the samples; and means for estimating data of the data signals using the spread data vector.