User equipment and method for precoding for MIMO codebook-based beamforming using an autocorrelation matrix for reduced quantization noise

摘要

Embodiments of user equipment (UE) and methods for precoding for codebook based beamforming are generally described herein In some embodiments, an autocorrelation matrix is used to derive weight vectors for beamforming feedback resulting in a reduction in quantization noise.

主权项

1. A linear precoding method to reduce the effect of quantization noise performed by user equipment (UE) in a 3GPP LTE network for providing quantized channel feedback in the form of a weight matrix for one of coordinated multipoint (CoMP), multi-user multiple-input multiple output (MU-MIMO) or closed loop MIMO operation, the method comprising:
generating an autocorrelation matrix from codebook vectors of a predefined codebook; and deriving weight vectors for feedback from the autocorrelation matrix for codebook based beamforming.