为开发实用的自适应偏振模色散(PMD)补偿控制模块，文章提出并实现了一种采用高性能浮点数字信号处理器(DSP)专注于算法处理、以增强型直接内存存取(EDMA)进行数据传输、以现场可编程门阵列(FPGA)进行数据采集和逻辑控制的新型设计方案。详细介绍了该模块的硬件设计、工作过程和软件设计，并对使用的粒子群优化(PSO)算法进行了重点阐述。给出了模块的工作流程图和算法流程图。实验结果表明，此模块对于二阶PMD补偿效果良好，相对于以往的补偿模块耗时更短。

To develop a practical adaptive PMD compensation control module, a novel design scheme is presented and implemented, in which high performance floating-point DSP is used to focus on algorithm processing, EDMA for data transmission, FPGA for data acquisition and logic control. The hardware design, work process and software design for this module are introduced in detail and the employed Particle Swarm Optimization (PSO) algorithm is elaborated. In addition, its work and algorithm flowcharts are given. Experimental results indicate that this module produces a good compensation effect for second-order PMD and consumes less time than previous ones.