Method and system for cancelling adjacent cells interference signal in a wireless communication system

摘要

The present invention relates to a method for cancelling adjacent cells interference signal in a wireless communication system. In one embodiment this is accomplished by receiving desired user signal and cancel the channel effect using the desired users reference and or pilot signals, by a serving base station, identifying interference power by estimating the interferer power, determining if the interference is more than threshold, monitoring the interference and identify the interferer signal, re-generating the interference signal source and perform the channel estimate for the interferer, and canceling the interference by applying the interference pattern and the channel estimate to the desired user who's interference is more than threshold.

主权项

1. A method for cancelling adjacent cells' interference signal in a wireless communication system, the method comprising:
serving the desired user's signal affected by the channel and interference at the base station of the desired user; cancelling channel effects using the desired user's reference and or pilot signals, by the said base station; identifying interference power by estimating the interferer power, wherein the interferer's power is identified by nullifying the desired user transmission; determining if the interference is more than threshold; monitoring the interference and identify the interferer signal, wherein identifying the interferer based on the reference and or pilot signal transmitted by the interferer; re-generating the interference signal source and perform the channel estimation for the interferer or using the channel estimates of the desired user, wherein channel estimation is determined by difference between transmitted signal and received signal; and canceling the interference by applying the interference pattern and the channel estimate to the desired user whose interference is more than threshold.