TY - GEN
T1 - High-Mobility OFDM Downlink Transmission with Partly Calibrated Subarray-Based Massive Uniform Linear Array
AU - Ge, Yinghao
AU - Zhang, Weile
AU - Gao, Feifei
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/11/14
Y1 - 2017/11/14
N2 - In this paper, we address the orthogonal frequency division multiplexing (OFDM) downlink transmission in scenarios abundant of scatters when the high- speed rail (HSR), equipped with partly calibrated massive uniform linear array (ULA), is in high- speed motion relative to the base station. A high- resolution beamforming network is designed to separate multiple Doppler frequency offsets (DFOs) in spatial domain into a series of parallel beamforming branches, such that each branch is mainly affected by single dominant DFO, wherein the conventional carrier frequency offset (CFO) compensation and subsequent data detection could be carried out individually. In view of this, a joint- estimation algorithm is proposed to jointly estimate the CFO and equivalent channel of each beamforming branch. Moreover, the calibration- oriented beamforming parameter (COBP) is introduced to mitigate the detrimental effects in presence of inter-subarray uncertainties. Both numerical and theoretical results are provided to corroborate the effectiveness of the proposed method.
AB - In this paper, we address the orthogonal frequency division multiplexing (OFDM) downlink transmission in scenarios abundant of scatters when the high- speed rail (HSR), equipped with partly calibrated massive uniform linear array (ULA), is in high- speed motion relative to the base station. A high- resolution beamforming network is designed to separate multiple Doppler frequency offsets (DFOs) in spatial domain into a series of parallel beamforming branches, such that each branch is mainly affected by single dominant DFO, wherein the conventional carrier frequency offset (CFO) compensation and subsequent data detection could be carried out individually. In view of this, a joint- estimation algorithm is proposed to jointly estimate the CFO and equivalent channel of each beamforming branch. Moreover, the calibration- oriented beamforming parameter (COBP) is introduced to mitigate the detrimental effects in presence of inter-subarray uncertainties. Both numerical and theoretical results are provided to corroborate the effectiveness of the proposed method.
UR - https://www.scopus.com/pages/publications/85040605073
U2 - 10.1109/VTCSpring.2017.8108618
DO - 10.1109/VTCSpring.2017.8108618
M3 - 会议稿件
AN - SCOPUS:85040605073
T3 - IEEE Vehicular Technology Conference
BT - 2017 IEEE 85th Vehicular Technology Conference, VTC Spring 2017 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 85th IEEE Vehicular Technology Conference, VTC Spring 2017
Y2 - 4 June 2017 through 7 June 2017
ER -