电力线载波和无线双模通信物理层前向纠错编码融合设计和实现

Coding in Physical Layer of the Power Line Carrier and Wireless Dual Mode Communication

电力线载波和无线双模融合通信已成为电网信息采集系统的新发展方向。针对双模通信的异构物理层融合度不高等缺点,文章基于国网新双模技术标准的发射端结构,针对物理层前向纠错编码的特性提出了一种双模复用编码设计方法。融合设计包含了分组编码、Turbo编码、信道交织、分集拷贝等功能模块,并通过对Turbo编码和交织等模块进行双模时分复用节省了电路资源。通过对硬件代码的仿真验证了融合设计方案的时序性能,并基于SMIC 55 nm工艺对代码进行综合以分析实际电路中节省的逻辑资源总数。仿真与综合结果证明,提出的融合设计方案可以节约电路消耗、提高编码效率,达到降低生产成本、减少信号延迟的设计目标。

Power line carrier and wireless dual-mode communication becomes a new direction of power grid information collection.In view of the low degree of integration of heterogeneous physical layers in dual-mode communication,this paper proposes a dual-mode encoder design based on the characteristics of forward error correction(FEC)processing.This design includes function modules such as block encoder,Turbo encoder,channel interleaving,copy diversity,and saving circuit resources by time-division multiplexing modules such as Turbo encoder and interleaving.The feasibility of the design is verified by the simulation of the Verilog code,and then the RTL code is compiled and synthesized based on the SMIC55 nm process to analyze the total amount of logical resources saved in the actual circuit.The results of simulation and synthesizing prove that the design in this paper can save circuit consumption,improve coding efficiency,and achieve the design goals of reducing production cost and signal delay.