Patent ID: 7680026
Filing Date: 2010-03-16
Classification: H04B,H04L

Abstract:
1. A method for use in a wireless network comprising a plurality of wireless communication cells and a plurality of communication channels extending therebetween, for estimating a signal received at a first wireless communication cell selected from among said plurality of wireless communication cells after being transmitted along a first communication channel, wherein transmission/reception frequency used for conveying traffic along said first communication channel is substantially equal to transmission/reception frequency used for conveying traffic along at least one other communication channel extending from/to at least one considerably interfering cell, which method comprising: associating a pilot sequence with each one of the plurality of wireless communication cells; (ii) providing at least one receiver with information related to the operation of a first transmitter with which the at least one receiver communicates and wherein that information comprises information that would allow estimation of the pilot sequence used by that first transmitter; (iii) providing that at least one receiver with information related to the operation of other transmitters that are operative to communicate with one or more receivers located at the geographical proximity of that at least one receiver, which information comprises information that would allow estimation of the pilot sequences associated with these other transmitters; (iv) estimating the signal associated with the pilot sequence used by the first transmitter; (v) subtracting the estimated signal from an input signal received by that at least one receiver (vi) estimating the pilot signal associated with a pilot sequence used by at least one of the other transmitters based on the difference obtained in step (v); and (vii) carrying out a modified estimation of the pilot signal used by the first transmitter, based on canceling the estimated result of step (vi) from the input of step (iv) and multiplying the resulting difference by the pilot sequence associated with the first transmitter.