The Signal Processing Architecture Of Unattended Spectrum Monitoring Receiver And Realization On DSP

With the rapid development of wireless technology, how to make the use of radio spectrum more efficient have become increasingly important. A powerful radio spectrum monitoring system is also becoming more and more important. At the same time, with the rapid development of the technology, the operation environment of the monitoring system become more and more complex, the tasks also become difficult, which could result in the normal processor overload. With the unattended function, the receiver must be connected to the network, the network task also make the normal DSP embarrassed. In this project, we choose the TI’s OMAP-L138, which is a dual-core processor. Based on OMAP-L138, we proposed the digital processing architecture of the unattended spectrum monitoring, and applied to the spectrum monitoring tasks.This dissertation, focusing on the digital processing architecture of the unattended spectrum monitoring receiver, finished the research from four aspects:Firstly, in view of the unattended spectrum monitoring receiver system has carried on the detailed design, including the reason of choosing OMAP-L138, the dual-core design of OMAP-L138, and the heterogeneous system based on OMAP-L138. And then, we introduced the DSP/BIOS real-time operating system and the embedded Linux system. Next, we describe the design of the connection between the monitoring host and the receiver; then, introduced the data interaction between FPGA and the OMAP-L138.Secondly, in view of the implementation of high performance spectrum monitoring receiver, this dissertation from the perspective of practical application to consider how to realize high-speed data transmission in the receiver system. The high speed transmission mainly includes how to realize the high speed network between the monitoring host and the receiver, and how to realize the OMAP-L138 internal high-speed interaction between the ARM core and the DSP core, and how to ensure the high speed of data transmission between the FPGA and OMAP-L138. And according to the different schemes of this a few demonstration and implementation, the implementation of the architecture of high-speed data transmission, can be easily applied to other applications, which need high-speed data transmission.Thirdly, from the perspective of spectrum monitoring application requirements, combining with the above introduction of related technical scheme and technical means, puts forward the implementation of different monitoring model, and based on the multi-core processor system, the parallel processing architecture on the basis of multi-client spectrum monitoring function is realized.Finally, the integration of the whole monitoring receiver system alignment, including parts of high-speed transmission rate tests, and various patterns of work suggests that receiver system can well realize all kinds of working mode, and can easily switch between various patterns. Finally, shows the realization of the multi-core processor parallel processing architecture, and the multi-client spectrum monitoring works very well, shows the processing architecture can be realized easily.