Open AccessZero‐Forcing Based Hybrid Beamforming for Multi‐User Millimeter Wave Systems
Author(s) -
Noh Jeehwan,
Kim Taeyoung,
Seol JiYun,
Lee Chungyong
Publication year - 2016
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2016.0769
Subject(s) - beamforming , channel state information , transmitter , computer science , telecommunications link , transmission (telecommunications) , extremely high frequency , electronic engineering , broadband , channel (broadcasting) , radio frequency , telecommunications , wireless , engineering
Owing to the high cost of radio frequency (RF) chains and power consumption of broadband signals, it is suitable to include both analogue and digital processing for millimetre wave (mmWave) beamforming. In this study, hybrid beamforming (HBF) schemes are considered for multi‐user downlink mmWave systems. RF beamforming schemes are proposed for HBF transmission with perfect channel state information at transmitter (CSIT) and limited feedback information in the multi‐user mmWave channel. Simulation results show that proposed HBF schemes enhance sum rate performance than conventional HBF schemes in both cases of perfect CSIT and limited feedback.