Patent ID: 7796678
Filing Date: 2010-09-14
Classification: H04B,H04L

Abstract:
1. A wireless transmit/receive unit (WTRU) comprising: an antenna configured to wirelessly receive signals in a shared spectrum where the received signals comprise encoded symbols; a sampling device configured to sample a received signal to produce received signal samples; a channel equalizer configured to process the received signal samples using an estimated channel response matrix H to produce a spread signal estimate of the received signal that can be despread to recover the encoded symbols of the received signal; the channel equalizer including a lookup table that stores code block diagonal matrices corresponding to signal codes or numbers of signal codes for a plurality of signals such that a respective code block diagonal matrix for signal codes of the received signal can be output based on the signal codes or a number of signal codes of the received signal; the channel equalizer configured to produce a channel response block diagonal matrix from the estimated channel response matrix H; and the channel equalizer configured to combine the respective code block diagonal matrix and the channel response block diagonal matrix such that the received signal samples are processed using the combined code block diagonal and channel response block diagonal matrices to produce the spread signal estimate of the received signal.