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为进一步提高低压配电网中电表与集中器之间信息的传输效率,将网络编码(Network Coding,NC)应用于电力线载波通信中。结合配电网信道特性对RA码的BP译码算法初始值进行修正,并利用3时隙网络编码通信方式在中继节点对信息进行处理,然后通过广播来实现载波通信信息的传递。仿真和测量结果表明,在电力线信道中经过网络编码后的载波抄表成功率高于传统中继通信方式,而在广播应用之后的网络编码方式抄表成功率显著高于传统中继通信方式,对电力线载波通信具有重要理论和参考价值。
In order to further improve the transmission efficiency of information between the meter and the concentrator in the low-voltage distribution network, Network Coding (NC) is applied to power line carrier communication. Based on the channel characteristics of distribution network, the initial value of BP decoding algorithm for RA codes is modified, and the information is processed at the relay node by using 3-slot network coding communication, and then the carrier communication information is delivered by broadcasting. The simulation and measurement results show that the success rate of carrier meter reading in power line channel after network coding is higher than that of traditional relay communication method and the success rate of network coding meter reading after broadcast application is significantly higher than that of traditional relay communication method, Power line carrier communication has important theoretical and reference value.