短波通信的多进制LDPC编码技术研究

Research on Multi Valued LDPC Coding Technology for HF Communication

针对短波通信的编码问题,研究了短波传输的信道编码方法,多进制LDPC编码具有较强的抗噪能力,可有效提升信道传输速率和稳定性。通过仿真对比了二进制和多进制LDPC码的信道编码,相同情况下对比二进制、四进制以及八进制LDPC码的信噪比和误码率,同时对比不同编码算法的复杂度。仿真结果表明,与二进制LDPC码相比,多进制LDPC码算法具有更强的噪声适应性和更低的误码率。

Aiming at the coding problem of short wave communication,the channel coding method of short wave transmission is studied.Multi valued LDPC coding has strong anti noise ability,which can effectively improve the channel transmission rate and stability.The channel coding of binary and multi valued LDPC codes are compared by simulation.The SNR and BER of binary,quaternary and octal LDPC codes are compared under the same conditions,and the complexity of different coding algorithms is compared.Simulation results show that,compared with binary LDPC codes,the algorithm has better noise adaptability and lower bit error rate.