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1. (WO2018202132) LASER-BASED WIRELESS FREQUENCY TRANSMISSION SYSTEM AND TRANSMISSION DEVICE THEREOF AND TRANSMISSION METHOD THEREFOR

Pub. No.:    WO/2018/202132    International Application No.:    PCT/CN2018/085609
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Sat May 05 01:59:59 CEST 2018
IPC: H04B 10/11
Applicants: ZTE CORPORATION
中兴通讯股份有限公司
Inventors: CHEN, Shijun
陈诗军
HOU, Dong
侯冬
GONG, Cuiling
龚翠玲
CHEN, Dawei
陈大伟
CHEN, Qiang
陈强
WANG, Yuanyuan
王园园
Title: LASER-BASED WIRELESS FREQUENCY TRANSMISSION SYSTEM AND TRANSMISSION DEVICE THEREOF AND TRANSMISSION METHOD THEREFOR
Abstract:
Disclosed by the present invention are a laser-based wireless frequency transmission system and a transmission device thereof and a transmission method therefor. The system comprises a transmitting end (10) and at least one receiving end (20). The receiving end (20) comprises a beam returning unit (203) used for reflecting a portion of a received laser signal back to the transmitting end (10). The transmitting end (10) comprises at least one pair of third beam expanders (104) and a phase compensation unit (105). The third beam expander (104) is used for coupling the laser signal reflected back by the receiving end to the phase compensation unit (105). The phase compensation unit (105) is used for comparing in real time the phases of a reference frequency signal and a microwave signal which is modulated in the laser signal reflected back by the receiving end, and adjusting the phase of the laser signal modulated with the reference frequency signal according to a phase error.