Iterative carrier phase and channel estimation algorithm in BICM-ID

Abstract

This paper proposed an iterative carrier phase and channel estimation algorithm for 16APSK in Bit-Interleaved Coded Modulation with Iterative Decoding(BICM-ID).The algorithm was based on Maximum Likelihood(ML) estimation,which made use of the decision information provided by the decoder and exchanged information between phase,channel estimation and decoder through iteration,so as to combine phase,channel estimation with decoder.The simulation results show the algorithm can get the performance only 0.5 dB lower than the ideal one,and can effectively estimate the phase difference from-20 degree to 20 degree.