Super-Nyquist Rateless Coding for Intersymbol Interference Channels

TL;DR

This paper introduces a novel rateless coding scheme for intersymbol interference channels using super-Nyquist signaling, achieving capacity-approaching performance with low complexity in both SISO and MIMO systems.

Contribution

It proposes a super-Nyquist rateless coding architecture combined with simple linear redundancy and MMSE decision feedback equalization for ISI channels.

Findings

Achieves capacity-approaching performance.

Applicable to both SISO and MIMO channels.

Low-complexity implementation.

Abstract

A rateless transmission architecture is developed for communication over Gaussian intersymbol interference channels, based on the concept of super-Nyquist (SNQ) signaling. In such systems, the signaling rate is chosen significantly higher than the Nyquist rate of the system. We show that such signaling, when used in conjunction with good "off-the-shelf" base codes, simple linear redundancy, and minimum mean-square error decision feedback equalization, results in capacity-approaching, low-complexity rateless codes for the time-varying intersymbol-interference channel. Constructions for both single-input / single-output (SISO) and multi-input / multi-output (MIMO) ISI channels are developed.