Zero-forcing based limited feedback hybrid precoding in mmwave communications

Shijian Gao, Xiang Cheng, Liuqing Yang, Rongqing Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

By exploiting angular sparsity that mmWave channels exhibit, limited feedback hybrid precoding (LFHP) can achieve high performance with a largely reduced system over-head. Most existing works focus on optimizing the system mutual information (SMI), where the receiver complexity is often neglected. More importantly, these SMI-oriented schemes provide no guarantee on the bit error rate (BER) performance, which is a key factor in evaluating system performance. In this paper, we work on devising a BER-oriented LFHP scheme with hybrid structure employed at the receiver. Based on the minimum BER criterion, an optimal zero-forcing based LFHP scheme is first derived when the transmitter has a digital structure. Next, an iterative algorithm is proposed to jointly construct the hybrid analog/digital precoder when both the transceivers employ hybrid structures. Simulations show that with our proposed LFHP scheme, the achieved BER under hybrid transceivers can be very close to the ideal benchmark obtained under one hybrid end.

Original languageEnglish (US)
Title of host publication2019 IEEE/CIC International Conference on Communications in China, ICCC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages362-366
Number of pages5
ISBN (Electronic)9781728107325
DOIs
StatePublished - Aug 2019
Externally publishedYes
Event2019 IEEE/CIC International Conference on Communications in China, ICCC 2019 - Changchun, China
Duration: Aug 11 2019Aug 13 2019

Publication series

Name2019 IEEE/CIC International Conference on Communications in China, ICCC 2019

Conference

Conference2019 IEEE/CIC International Conference on Communications in China, ICCC 2019
CountryChina
CityChangchun
Period8/11/198/13/19

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