Method for estimating pulse noise in OFDM (Orthogonal Frequency Domain Multiplexing) underwater acoustic communication system

摘要: The invention discloses a method for estimating pulse noise in an OFDM (Orthogonal Frequency Domain Multiplexing) underwater acoustic communication system. At receiving end, sparse estimation is performed on signal channel transmission process according to frequency domain subjected redundant Doppler shift compensation, and offset compensation the with void subcarriers. Under consideration of mutual interference between carrier communication, added iteration while estimated all subcarriers posteriori distribution under framework conventional Bayesian learning, measurement diagonal matrix are updated continuously order lower influences two types interference. Moreover, by full utilization method, so that spectrum efficiency performance system improved.