基于PXIe总线的多DSP并行信号处理模块设计

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。

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

As the extensive use of the digital signal processing equipment in test system,a single DSP couldn’t meet the advanced requirement of the system process speed.This paper introduces a Multi-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.