TY - JOUR
T1 - Millimeter-wave Hybrid Precoder Design with a Fast Iterative Beam Split and Detection Algorithm
AU - Nie, Yifang
AU - Li, Fangwei
AU - Mbugua, Allan Wainaina
AU - Fan, Wei
PY - 2020/12
Y1 - 2020/12
N2 - The hybrid analog and digital structure of large-scale antenna array offers a good tradeoff between cost and flexibility, which is a promising solution for millimeter-wave (mm-wave) system. This letter proposes a novel hybrid precoder (HP) design with an iterative beam split and detection algorithm, which works well for sparse mm-wave channels. The proposed strategy can extract the dominant propagation paths by iterative trainings, where the number of dominant paths up to that of radio frequency chains can be detected. The effectiveness and time overhead parameterized by the number of iterations are investigated. The experimental results demonstrated that we can approach optimal HP design with the proposed algorithm with only eight iterations for measured channels, which significantly reduced the complexity compared to the exhaustive search method.
AB - The hybrid analog and digital structure of large-scale antenna array offers a good tradeoff between cost and flexibility, which is a promising solution for millimeter-wave (mm-wave) system. This letter proposes a novel hybrid precoder (HP) design with an iterative beam split and detection algorithm, which works well for sparse mm-wave channels. The proposed strategy can extract the dominant propagation paths by iterative trainings, where the number of dominant paths up to that of radio frequency chains can be detected. The effectiveness and time overhead parameterized by the number of iterations are investigated. The experimental results demonstrated that we can approach optimal HP design with the proposed algorithm with only eight iterations for measured channels, which significantly reduced the complexity compared to the exhaustive search method.
KW - Beamforming
KW - hybrid precoding
KW - millimeter-wave (mm-wave) communications
KW - multipath propagation
UR - http://www.scopus.com/inward/record.url?scp=85098250983&partnerID=8YFLogxK
U2 - 10.1109/LAWP.2020.3033294
DO - 10.1109/LAWP.2020.3033294
M3 - Journal article
SN - 1536-1225
VL - 19
SP - 2368
EP - 2372
JO - I E E E Antennas and Wireless Propagation Letters
JF - I E E E Antennas and Wireless Propagation Letters
IS - 12
M1 - 9238395
ER -