Analog Versus Hybrid Precoding for Multiuser Massive MIMO with Quantized CSI Feedback
Type
ArticleKAUST Department
Communication Theory LabComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Date
2020-06-03Preprint Posting Date
2020-06-01Online Publication Date
2020-06-03Print Publication Date
2020-10Permanent link to this record
http://hdl.handle.net/10754/663650
Metadata
Show full item recordAbstract
In this letter, we study the performance of a downlink multiuser massive multiple-input multiple-output (MIMO) system with sub connected structure over limited feedback channels. Tight rate approximations are theoretically analyzed for the system with pure analog precoding and hybrid precoding. The effect of quantized analog and digital precoding is characterized in the derived expressions. Furthermore, it is revealed that the pure analog precoding outperforms the hybrid precoding using maximal-ratio transmission (MRT) or zero forcing (ZF) under certain conditions, and we theoretically characterize the conditions in closed form with respect to signal-to-noise ratio (SNR), the number of users and the number of feedback bits. Numerical results verify the derived conclusions on both Rayleigh channels and mmWave channels.Citation
Zhao, Y., Xu, W., Xu, J., Jin, S., Wang, K., & Alouini, M.-S. (2020). Analog Versus Hybrid Precoding for Multiuser Massive MIMO with Quantized CSI Feedback. IEEE Communications Letters, 1–1. doi:10.1109/lcomm.2020.2999646Journal
IEEE Communications LettersarXiv
2006.00899Additional Links
https://ieeexplore.ieee.org/document/9107073/ae974a485f413a2113503eed53cd6c53
10.1109/lcomm.2020.2999646