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Low-Complexity Hybrid Precoding Algorithm Based on Log-Det Expansion for GenSM-Aided MmWave MIMO System

Authors :
Jian Song
Xu Shi
Changyong Pan
Jintao Wang
Source :
IEEE Transactions on Vehicular Technology. 70:1554-1564
Publication Year :
2021
Publisher :
Institute of Electrical and Electronics Engineers (IEEE), 2021.

Abstract

Generalized spatial modulation (GenSM) aided millimeter wave (mmWave) multiple-input multiple-output (MIMO) system has been recently considered as a new efficient technique due to the combination of numerous antennas and reduced number of radio frequency (RF) chains. However, the present hybrid precoding schemes for GenSM-aided system are still troubled by high computational complexity and performance loss in spectral efficiency (SE). In this paper we propose low-complexity hybrid precoding schemes based on Martin's expansion for logarithmic determinant (log-det) form in analytical SE lower bound. Digital and analog precoders are herein optimized separately, which means complicated alternating minimization iteration is omitted. Besides, we can adjust algorithmic complexity adaptively corresponding to different demand levels for users. Finally the numerical simulations show that the proposed methods outperform other GenSM-aided mmWave MIMO schemes and can achieve a better tradeoff between complexity and SE.

Details

ISSN :
19399359 and 00189545
Volume :
70
Database :
OpenAIRE
Journal :
IEEE Transactions on Vehicular Technology
Accession number :
edsair.doi...........96ea41e3ec72582c56b3388c157473af
Full Text :
https://doi.org/10.1109/tvt.2021.3054398