Patent ID: 8675718
Filing Date: 2014-03-18
Classification: H04B,H04L

Abstract:
1. A method of determining precoder weights employed at a first base station which coordinates with other base stations to form a super-cell, the method comprising: (a) determining an initial downlink precoding matrix at the first base station for a mobile station serviced by the first base station in the super-cell; (b) revising a downlink receiver matrix associated with the mobile station based on the initial downlink precoding matrix; (c) transforming the revised downlink receiver matrix to an uplink precoder matrix associated with the mobile station; (d) revising an uplink receiver matrix associated with each base station in uplink communication with the mobile station based on the uplink precoder matrix associated with the mobile station; (e) revising the initial downlink precoding matrix by transforming the revised uplink receiver matrix to a revised downlink precoding matrix; and (f) repeating steps (b), (c), (d) and (e) until a difference between a mean-square error estimate computed for the current iteration and a mean-square error estimate computed for the immediately preceding iteration is below a particular threshold in order to determine a final downlink precoding matrix for the mobile station.