RS码在PR信道下的研究

RS code has been widely used in digital communications systems and magnetic recording systems for error-correcting. Based on the G-S list decoding algorithm, K-V algebra soft-decision decoding algorithm uses the reliability information coming from the channel to improve the performance of error correction capability. In this paper, we investigated the application of RS code over PR channels and analyzed the theory and the performance of the hard-decision decoding algorithm and the algebraic soft-decision decoding algorithm at the same time. Computer simulation results show that: compared with hard-decision decoding over PR4 channel, the soft-decision decoding obtained 2dB systems gain; furthermore, the PR4 channel with soft-decision decoding outperform that of EPR4 channel; the number of symbol taken more important role than the code rate in soft-decision decoding systems.