Synchronization in a beamforming system

A beamforming system synchronization architecture is proposed to allow a receiving device to synchronize to a transmitting device in time, frequency, and spatial domain in the most challenging situation with very high pathloss. A periodically configured time-frequency resource blocks in which the transmitting device uses the same beamforming weights for its control beam transmission to the receiving device. A pilot signal for each of the control beams is transmitted in each of the periodically configured time-frequency resource blocks. Pilot symbols are inserted into pilot structures and repeated for L times in each pilot structure. The L repetitions can be implemented by one or more Inverse Fast Fourier Transfers (IFFTs) with corresponding one or more cyclic prefix (CP) lengths. 本发明提出种波束成形系统同步架构，以在具有非常高路径损耗的最具挑战的情况下，允许接收装置与发送装置在时域、频域以及空域同步。在定期配置的时间-频率资源块中，发送装置采用相同的波束成形权重，用于其对接收装置的控制波束传送。每个控制波束的导频信号在每个定期配置的时间-频率资源块中传送。在每个导频架构中，导频符号插入到导频架构中并重复L次。L次重复可通过次或多次IFFT与相应的个或多个循环前缀长度实现。