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提出采用了网络信道联合纠错的编码(JNECD)的方法来降低网络传输的误码率,这种方法将接收到的数据包组成码字矩阵,利用信道编码与网络编码分别对码字矩阵的列和行联合校验检错,得到有可能错误的码元位置,删除所对应的码元,对剩余的码元解方程得到信源消息码字.仿真实验表明,在伽罗华域GF(2)中将JNECD方法与分离网络信道编码(SNCC)和直接传输(DT)方法相比,该算法可以降低通信系统的误码率和丢包率,提高数据包传输的正确概率,减少网络延时,提高网络吞吐量.
This paper proposes a method of network channel joint error correction coding (JNECD) to reduce the bit error rate of network transmission. This method forms a codeword matrix of received data packets, and uses channel coding and network coding respectively to codeword matrix Columns and rows are combined to check and correct the errors, the symbol positions with possible errors are obtained, the corresponding symbols are deleted, and the source message code word is obtained by solving the remaining symbols. The simulation results show that in the GF 2) Compared with separate network channel coding (SNCC) and direct transmission (DT), JNECD method can reduce the bit error rate and packet loss rate of communication system, improve the correct probability of packet transmission and reduce the network delay Improve network throughput.