# A Low-Resolution ADC Module Assisted Hybrid Beamforming Architecture for mmWave Communications

## TL;DR

This paper introduces a low-resolution ADC-assisted hybrid beamforming system for mmWave communications that significantly reduces beam training time and complexity without sacrificing data transmission quality.

## Contribution

It presents a novel low-cost, flexible architecture and a fast beam training method requiring fewer time slots than existing approaches.

## Key findings

- Reduces beam training time and complexity
- Maintains data transmission performance
- Requires only L+1 time slots for beam training

## Abstract

We propose a low-resolution analog-to-digital converter (ADC) module assisted hybrid beamforming architecture for millimeter-wave (mmWave) communications. We prove that the proposed low-cost and flexible architecture can reduce the beam training time and complexity dramatically without degradation in the data transmission performance. In addition, we design a fast beam training method which is suitable for the proposed system architecture. The proposed beam training method requires only L + 1 (where L is the number of paths) time slots which is smaller compared to the state-of-the-art.