Patent ID: 7519129

Claim:
A fixed wireless access (FWA) communications system comprising an access point and a plurality of subscriber units each transmitting a predetermined data sequence: comprising means for determining the impulse response of the upstream channel between each subscriber unit and the access point; means for generating a data sequence for transmission from a subscriber unit to the access point, the data comprising the predetermined data sequence pre-distorted to compensate for the channel impulse response of the upstream channel between the subscriber unit and the access point, means for storing the pre-distorted predetermined data sequence within the subscriber unit, and means for transmitting the stored sequence from the subscriber unit to the access point when it is desired to transmit the predetermined sequence to the access point; wherein the means for generating the data sequence for transmission from the subscriber unit to the access point comprises a processor for calculating the pre-distorted predetermined data sequence from the upstream channel response and the predetermined data sequence using the Moore-Penrose Pseudo-Inverse Algorithm.