Directional Timing Synchronization in Wideband Millimeter Wave Cellular Systems with Low-Resolution ADCs
Dalin Zhu and Robert W. Heath, Jr.
To appear in Proc. of the 51st Asilomar Conf. on Signals, Systems, and Computers 2017.
We develop a new beamforming strategy for millimeter-wave systems to improve the frame timing synchronization performance under low-resolution analog-to-digital converters. In the proposed method, identical synchronization sequences are sent across a cluster of simultaneously probed synchronization beams. The beam codewords in the beam cluster are selected to maximize the received synchronization signal-to-quantization-plus-noise ratio (SQNR). Numerical results reveal that the frame timing synchronization performance of the proposed method outperforms the existing approach due to the improvement in the received synchronization SQNR.