Patent ID: 9130621
Filing Date: 2015-09-08
Classification: H04B

Abstract:
1. A communication device, comprising: a channel estimation module configured to generate a channel estimate of a channel from another communication device: a processor configured to determine a four-transmitter (4Tx) precoder from a codebook based on the channel estimate, wherein the 4Tx precoder includes a first precoder component and a second precoder component; and a transmitter configured to signal the first precoder component and the second precoder component to the another communication device; wherein the processor is further configured to select an index for the first precoder component, wherein the transmitter is configured to signal the index to the another communication device, wherein the index indicates a plurality of 4Tx precoders from a finite set of consecutive uniformly spaced 4Tx precoders, and wherein the plurality of 4Tx precoders are non-consecutive within the finite set of consecutive uniformly spaced 4Tx precoders.