# On Multiterminal Communication over MIMO Channels with One-bit ADCs at the Receivers

## TL;DR

This paper introduces a novel receiver architecture with adaptive threshold one-bit ADCs for MIMO channels, significantly improving achievable rates in high SNR regimes compared to traditional methods.

## Contribution

It proposes a new adaptive threshold one-bit ADC receiver architecture and coding schemes that enhance communication rates over MIMO channels with limited quantization.

## Key findings

- Achieves larger rate regions at high SNR with adaptive ADCs.
- Develops coding schemes for point-to-point and broadcast channels.
- Demonstrates the superiority of the proposed architecture over existing designs.

## Abstract

The fundamental limits of communication over multiple-input multiple-output (MIMO) networks are considered when a limited number of one-bit analog to digital converters (ADC) are used at the receiver terminals. Prior works have mainly focused on point-to-point communications, where receiver architectures consisting of a concatenation of an analog processing module, a limited number of one-bit ADCs with non-adaptive thresholds, and a digital processing module are considered. In this work, a new receiver architecture is proposed which utilizes adaptive threshold one-bit ADCs - where the ADC thresholds at each channel-use are dependent on the channel outputs in the previous channel-uses - to mitigate the quantization rate-loss. Coding schemes are proposed for communication over the point-to-point and broadcast channels, and achievable rate regions are derived. In the high SNR regime, it is shown that using the proposed architectures and coding schemes leads to the largest achievable rate regions among all receiver architectures with the same number of one-bit ADCs.