Multipair Massive MIMO Relaying Systems With One-Bit ADCs and DACs

This paper considers a multipair amplify-and-forward massive multipair multiple-input multiple-output relaying system with one-bit analog-to-digital converters and one-bit digital-to-analog converters at the relay. The channel state information is estimated via pilot training, and then utilized by t...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on signal processing 2018-06, Vol.66 (11), p.2984-2997
Main Authors: Chuili Kong, Mezghani, Amine, Caijun Zhong, Swindlehurst, A. Lee, Zhaoyang Zhang
Format: Article
Language:English
Subjects:
Antenna arrays
Channel estimation
Covariance matrices
Massive MIMO
MIMO communication
one-bit quantization
power allocation
Quantization (signal)
Relays
Training
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper considers a multipair amplify-and-forward massive multipair multiple-input multiple-output relaying system with one-bit analog-to-digital converters and one-bit digital-to-analog converters at the relay. The channel state information is estimated via pilot training, and then utilized by the relay to perform simple maximum-ratio combining/maximum-ratio transmission processing. Leveraging on the Bussgang decomposition, an exact achievable rate is derived for the system with correlated quantization noise. Based on this, a closed-form asymptotic approximation for the achievable rate is presented, thereby enabling efficient evaluation of the impact of key parameters on the system performance. Furthermore, power scaling laws are characterized to study the potential energy efficiency associated with deploying massive one-bit antenna arrays at the relay. In addition, a power allocation strategy is designed to compensate for the rate degradation caused by the coarse quantization. Our results suggest that the quality of the channel estimates depends on the specific orthogonal pilot sequences that are used, contrary to unquantized systems where any set of orthogonal pilot sequences gives the same result. Moreover, the sum rate gap between the double-quantized relay system and an ideal nonquantized system is a moderate factor of 4/π 2 in the low power regime.
ISSN:1053-587X
1941-0476
DOI:10.1109/TSP.2018.2816585