On the scaling of feedback bits to achieve the full multiplexing gain over the Gaussian broadcast channel using DPC

TL;DR

This paper investigates how the number of feedback bits affects the ability to achieve full multiplexing gain in Gaussian broadcast channels using dirty paper coding, aiming to optimize feedback design.

Contribution

It introduces a new analysis of feedback scaling laws necessary for full multiplexing gain with DPC in Gaussian broadcast channels.

Findings

Derived scaling laws for feedback bits to achieve multiplexing gain

Showed the impact of feedback quantization on channel capacity

Provided guidelines for feedback design in multi-user MIMO systems

Abstract

This paper has been withdrawn by the author(s) for revision.