基于TMS320C5402的全数字电力线载波通信调制模块

ALL-DIGITAL MODULATION MODULE FOR POWER-LINE COMMUNICATION BASED ON TMS320C5402

介绍了一种全数字方案的电力线载波通信调制模块。方案以TMS320C5402为核心,传输数据的扰码、编码、脉冲成形和上变频均由软件完成,上变频后的数据以D/A转换器的采样率送入D/A转换电路,得到的模拟信号在经过低通滤波和功率放大后被耦合至电力线。调用不同的软件模块,系统可选择不同的载频和调制方式,适于电力线数据传输实验。

A kind of all-digital modulation module for power-line communication systems is described. With TMS320C5402 as the core, the module consists of some sub-modules, such as symbol scrambler, trellis coded modulator, pulse shaping and digital up-converter. The high rate data sequence is sent to DAC904E and analog signal is coupled to power-line after low-pass filtering and power amplification. Capable of selecting different modulation modes and various carrying frequencies by calling different program modules, the system is suitable for data transmitting experiment through the power-line.