TY - GEN
T1 - Wideband hybrid precoder design in MU-MIMO based on channel angular information
AU - Peng, Rui
AU - Tian, Yafei
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/12/19
Y1 - 2017/12/19
N2 - Millimeter wave (mmWave) is one of the key technology in the fifth generation mobile communication system. In mmWave system, hybrid precoding is applied to reduce the number of radio frequency (RF) chains. Although narrow band multiuser hybrid precoding is widely studied, only a few works focus on wideband hybrid precoding. The main problem is that all subcarrier share the same analog precoding matrix but the channel information in frequency domain are different. In this paper, we propose a wideband hybrid precoding method based on channel angular information in multiuser-MIMO (MU-MIMO) scenario. Since the channel state information (CSI) in time domain are the same for all subcarriers, we first construct a autocorrelation channel matrix by angular information, which is available for all subcarriers. Then, we propose an iterative method using manifold optimization for analog precoders and combiners to achieve higher sum data rate. Simulation results show that our proposed method is superior to the existing hybrid precoding method and has a close performance to digital ZF precoding.
AB - Millimeter wave (mmWave) is one of the key technology in the fifth generation mobile communication system. In mmWave system, hybrid precoding is applied to reduce the number of radio frequency (RF) chains. Although narrow band multiuser hybrid precoding is widely studied, only a few works focus on wideband hybrid precoding. The main problem is that all subcarrier share the same analog precoding matrix but the channel information in frequency domain are different. In this paper, we propose a wideband hybrid precoding method based on channel angular information in multiuser-MIMO (MU-MIMO) scenario. Since the channel state information (CSI) in time domain are the same for all subcarriers, we first construct a autocorrelation channel matrix by angular information, which is available for all subcarriers. Then, we propose an iterative method using manifold optimization for analog precoders and combiners to achieve higher sum data rate. Simulation results show that our proposed method is superior to the existing hybrid precoding method and has a close performance to digital ZF precoding.
KW - Angular information
KW - Autocorrelation channel matrix
KW - Hybrid precoding
KW - Manifold optimization
KW - Wideband
UR - https://www.scopus.com/pages/publications/85044208902
U2 - 10.1109/SPAWC.2017.8227759
DO - 10.1109/SPAWC.2017.8227759
M3 - 会议稿件
AN - SCOPUS:85044208902
T3 - IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
SP - 1
EP - 5
BT - 18th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 18th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2017
Y2 - 3 July 2017 through 6 July 2017
ER -