A Method of Phase Noise Estimation and Compensation Based on Golay Sequence in Time Domain for SC-FDE Millimeter-Wave Communication Systems

Abstract

A method of phase noise (PHN) estimation and compensation based on the Golay sequence is proposed in the article for single-carrier frequency-domain equalization (SC-FDE) Millimeter-Wave Systems. First, the channel is estimated based on the correlation with the Golay sequence. Then, the 64-length cyclic prefix (CP) between data blocks is adopted to estimate the common phase error (CPE) of the data blocks after equalization in the frequency domain. Finally, the PHN estimation and compensation after equalization is computed so that the phase deviation can be avoided. Different from previous researches, the algorithm is developed in SC-FDE Systems, using a system symbol transmission rate of 2.4576G sym/s, 64QAM modulation, and each transmission frame structure of 9600 data blocks. In this case, the effect of PHN will be magnified. 1/2 LDPC encoding and decoding are also introduced into this system to further improve the performance. Compared with present algorithms, the algorithm shows better comprehensive performance in MSE of PHN before and after equalization, with the complexity of integrated computation taken into consideration.