Asymmetric Compute-and-Forward with CSIT

TL;DR

This paper introduces a modified compute-and-forward scheme that leverages CSIT to enable different coding rates for users, significantly expanding the achievable rate region in relevant communication systems.

Contribution

The paper proposes a novel compute-and-forward scheme utilizing CSIT, allowing for user-specific coding rates and improved performance over traditional methods.

Findings

Achieves larger rate regions with CSIT utilization

Applicable to all compute-and-forward systems

Potentially arbitrarily better than regular schemes in some settings

Abstract

We present a modified compute-and-forward scheme which utilizes Channel State Information at the Transmitters (CSIT) in a natural way. The modified scheme allows different users to have different coding rates, and use CSIT to achieve larger rate region. This idea is applicable to all systems which use the compute-and-forward technique and can be arbitrarily better than the regular scheme in some settings.