Abstract：Phase noise can impair the BER performance of high-data-rate satellite communications. The influence of the phase noise varies in the two frequency bands in both the uncoded or low-density parity-check (LDPC) coded communication systems. This paper presents a simulation and then an iterative compensation algorithm for the LDPC codes for the phase noise in the higher frequency band, which significantly degrades the high order modulation systems performance. The algorithm first compares the phases of the receiving and after-decoding symbols, extracts the difference based on the low-pass and narrow-band characteristics of the phase noise, and their compensates for the losses in an iteration loop. Simulations show that the method improves the LDPC-coded systems performance when the phase noise significantly degrades the signal.
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2017, Vol. 57 
