Title
Joint Modulation and Beamforming for MIMO Systems With 1-b DACs
Abstract
To realize multiple-input multiple-output (MIMO) with low cost and low power consumption, the use of low-resolution digital-to-analog converters (DAC) is drawing significant interest. While previous studies on low-resolution DAC MIMO have focused on optimizing precoding for massive MIMO, this approach faces the limitation that the coarse resolution at the transmitter makes it difficult to construct a transmit signal close enough to the desired one when a small scale MIMO transmitter is considered as in IoT networks. To address this problem, we propose a new transmission framework that jointly performs modulation and beamforming. With the proposed scheme, a message symbol is directly mapped into a feasible transmit vector. We also develop a channel-adaptive mapping function within the proposed framework that minimizes error probability. Simulation results show that the proposed scheme can significantly improve the error performance.
Year
DOI
Venue
2020
10.1109/TVT.2019.2950308
IEEE Transactions on Vehicular Technology
Keywords
DocType
Volume
MIMO communication,Precoding,Modulation,Transmitters,Array signal processing,Receivers
Journal
69
Issue
ISSN
Citations 
1
0018-9545
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Yonghee Han100.34
Jungwoo Lee21467156.34
Rostom Zakaria313815.57
Didier Le Ruyet432049.93