基于PXIe总线的多DSP并行信号处理模块设计

Multi-DSP Parallel Signal Process Module Design Based on PXIe Bus

随着数字信号处理设备在测试系统内的广泛应用,使得单颗DSP芯片的性能已无法满足日益增长的对处理速度的要求;设计的并行多DSP模块,集成了四片高端浮点DSP芯片和一片高性能FPGA芯片,其通过优化DSP簇拓扑结构、增强DSP簇数据缓存能力、扩展DSP簇数据传输通道等技术手段,使模块具备了强大的信号处理能力和灵活的应用开发方式;模块并行处理能力达到单DSP性能的3.6倍以上;该模块支持PXIe、RapidIO、Infiniband、光纤等多种高速接口,数据传输速率达到16Gbps可应用于雷达信号处理、合成仪器、软件无线电系统等多种测控系统。

As the extensive use of the digital signal processing equipment in test system, a single DSP eouldn＇t meet the advanced re- quirement of the system process speed. This paper introduces a Muhi--DSP parallel signal process module, which includes four high float-- point DSPs and a high performance FPGA. By using the techniques such as optimizing the DSP cluster topology, improving the data storage performance, expanding the data transmission channels etc. , the module possesses mighty signal processing capability and flexible application mode. It supports the high--speed interface for example PXIe, rapid--IO, infiniband, fiber. At the same time, it could be used in many measurement and control system such as radar signal processing, synthesize instruments, soft radio etc.