Patent ID: 8634432
Filing Date: 2014-01-21
Classification: H04B,H04L,H04W

Abstract:
1. A communications system, comprising: a base station for use in an orthogonal frequency division multiplexing (OFDM) network, the base station configured to: communicate with a first subscriber station in a first subband of subcarriers from a first transmit antenna and communicate with the first subscriber station in a second subband of subcarriers from a second transmit antenna, wherein the first subband from the first transmit antenna and the second subband from the second transmit antenna are each selected independently based on channel quality indication (CQI) data acquired for each subband at each transmit antenna, and wherein the CQI data comprises channel fading characteristics; when the first subscriber station has better channel fading characteristics than a second subscriber station in a given subband on both transmit antennas, select one of the two transmit antennas to transmit to the first subscriber station in the given subband and not to transmit in the given subband using the unselected antenna; and determine a data rate for each subband at each transmit antenna based on an expected channel quality for each subband by calculating at least one of: an average of the expected channel qualities on each subband and a Linear Minimum Mean Square Error algorithm with an interference cancellation algorithm.