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随着数字技术在通信系统中的广泛应用,数字集群通信系统逐渐成为专用通信市场主流。对陆上集群无线系统(TETRA)中的数字集群通信系统的物理层协议进行了分析,提出并设计了基带信号处理的单芯片解决方案。该芯片包含嵌入式ARM9内核,兼容多种卷积方式的信道编解码和兼容多种速率的GMSK调制解调等模块,能够完成从TETRA协议处理到调制解调的全部基带处理功能,具有精度可调,应用灵活的特点,适合公安、武警、消防等专用安全领域的数字集群应用。该芯片电路通过了FPGA原型验证并已应用于TETRA集群通信系统。
With the widespread application of digital technology in communication systems, digital trunking communication systems have become the mainstream of specialized communication markets. The physical layer protocol of digital trunking communication system in TETRA is analyzed and a single chip solution of baseband signal processing is proposed and designed. The chip contains an embedded ARM9 core, compatible with a variety of convolutional channel coding and decoding and compatible with a variety of rate GMSK modem modules to complete from TETRA protocol processing to the modulation and demodulation of all baseband processing with accuracy Tune, the application of flexible features, suitable for public security, armed police, fire and other special security applications in the field of digital clusters. The chip circuit through the FPGA prototype verification and has been applied to TETRA cluster communications system.