PLC中OFDM应用及DSP代码自动生成  

Application of OFDM in PLC and Its Automatic DSP Code Generation

作　　者：叶夏兰[1] 林东[1] 

机构地区：[1]福州大学物理与信息工程学院,福建福州350108

出　　处：《电力信息与通信技术》2013年第11期12-15,共4页Electric Power Information and Communication Technology

摘　　要：为了研究OFDM技术在PLC通信中的应用及其DSP实现,利用MATLAB系统中的Simulink建立OFDM模型,仿真验证模型参数设置正确及技术指标符合要求后,通过自动转换生成DSP代码,经CCS编译后加载到DSP开发板运行产生OFDM波形。实验结果显示,DSP输出的OFDM调制波形与理论仿真结果一致,验证了利用MATLAB模型转换方式生成DSP代码的可行性与正确性,并分析了不同IFFT点数对输出波形的影响。利用该方法可以方便地研究OFDM等通信系统的性能,快速地进行DSP开发应用。In order to study the application of OFDM in the PLC technology, and to implement it in DSP, we build an OFDM model through MATLAB/Simulink. After validating model parameters setting correct and technical indexes achievable by sirnulations, the corresponding DSP codes of the model are automatically generated, compiled using CCS and loaded into the DSP developrnent board to output the waveform of OFDM signals. Experiment restllts show the outputted waveforna of OFDM signals is consistent with their theoretical simulation results, further show that automatic DSP code generation by transforming MATLAB models is feasible and correct, and can analyze the impact of different numbers of IFFT on the waveform of OFDM. The method will be helpful to study the performance of communication systems such as OFDM, and rapidly develop DSP applications.

关 键 词：电力线载波通信 OFDM 代码生成 MATLAB 

分 类 号：TN915.853[电子电信—通信与信息系统]