Systems and methods for trellis coded quantization based channel feedback

摘要

System and method embodiments are provided for Trellis Coded Quantization (TCQ) based channel feedback. The embodiments provide full channel state information with a short feedback size to a scheduler in order for the scheduler to apply advanced beamforming schemes, such as those designed in non-linear precoder methods. In an embodiment, a method in a station for providing channel feedback to a transmission point (TP) in a wireless system includes receiving a signal from the TP; estimating channel parameters for the signal; applying a TCQ scheme to the estimated channel parameters to map the channel estimate parameters to trellis codes; and transmitting full channel state information to the TP, wherein the full channel state information comprises output of a Viterbi algorithm (VA) corresponding to the trellis codes.

主权项

1. A method in a station for providing channel feedback to a transmission point (TP) in a wireless system, the method comprising:
receiving a signal from the TP; estimating channel parameters for the signal; normalizing the estimated channel parameters into a predefined range according to a transmission power of the TP, a receiver power of the station, and path loss information; applying a Trellis Coded Quantization (TCQ) scheme to the normalized estimated channel parameters to map the channel estimate parameters to trellis codes; and transmitting full channel state information to the TP, wherein the full channel state information comprises output of a Viterbi algorithm (VA) corresponding to the trellis codes.