Beamforming Matrix Quantization with Variable Feedback Rate

TL;DR

This paper introduces a beamforming matrix compression technique using Givens Rotation with variable feedback rate, optimizing bit usage based on matrix values to enhance performance without increasing bandwidth.

Contribution

It presents a novel variable feedback rate scheme for beamforming matrix quantization that improves performance over fixed-rate methods.

Findings

Better beamforming performance without extra bandwidth

Adaptive bit allocation improves quantization efficiency

Outperforms fixed feedback rate schemes

Abstract

We propose an improved beamforming matrix compression by Givens Rotation with the use of variable feedback rate. The variable feedback rate means that the number of bits used to represent the quantized beamforming matrix is based on the value of the matrix. Compared with the fixed feedback rate scheme, the proposed method has better performance without additional feedback bandwidth.