Patent ID: 7873021
Filing Date: 2011-01-18
Classification: H04B,H04L

Abstract:
1. A method for communicating data signals between at least one base station and at least one terminal, the method comprising: receiving a signal from at least one antenna; performing subband processing of a version of said received signal; separating contribution signals associated with a plurality of users, the contribution signals being derivable from said received signal; and restoring data from each one of the contribution signals, the data having been configured to resist frequency-selective fading, wherein the restoring comprises arranging the separated contribution signals into blocks of data comprising a plurality of symbols and degrouping said blocks of data, wherein the separating of contribution signals comprises filtering at a chip rate at least a portion of the subband processed version of said received signal, and then despreading said filtered portion, and wherein the filtering comprises processing said portion with a filter characterized by filter coefficients that are determinable without the necessity to perform channel estimation, wherein the filter coefficients are directly computed by using an explicit equation.