Increasing Transmission Distance in THz systems with Erasure Coding and Auxiliary Channels

TL;DR

This paper proposes combining systematic linear network coding with an auxiliary low-bitrate channel to significantly extend the transmission distance and improve throughput in THz communication systems.

Contribution

It introduces a novel combination of erasure coding and auxiliary channels to enhance THz transmission range and quality, which has not been explored before.

Findings

Theoretical analysis shows increased throughput and modulation levels.

System can support longer transmission distances.

Improved robustness against channel impairments.

Abstract

We analyze whether the THz transmission distance can be extended with systematic linear network coding (sRLNC) and a low-bitrate additional channel. While various coding techniques have been proposed to mitigate issues of channel quality, and other techniques have used auxiliary channels to enable an effective THz transmission system configuration, their combination is new, and carries potential for significant improvements in transmission quality. Our specific solution is designed to complementing a generic low complexity FEC code by a low complexity erasure code (sRLNC), whereby channel coding is proposed to simultaneously send the native and coded data over two parallel channels, including one main THz channel and one auxiliary channel with comparably lower bitrate. We show theoretically that the proposed system can improve throughput, support higher modulation levels and transfer data over the longer distances with THz communications.