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在介绍码分多址(CDMA)通信系统原理的基础上,提出了一种基于FPGA的CDMA基带传输系统的设计。该系统采用EDA技术中自顶向下的设计方法,将CDMA基带通信系统中主要硬件的功能通过编程方式制作在FP-GA芯片上。文中详细地介绍了系统中各个主要模块的设计思路、工作原理以及仿真结果。该设计简化了系统的外围电路,节约了成本,增大了系统的通信容量,提高了系统抗干扰能力。
Based on introducing the principle of code division multiple access (CDMA) communication system, a design of CDMA baseband transmission system based on FPGA is proposed. The system uses the top-down design method of EDA technology, the function of the main hardware in the CDMA baseband communication system is programmed on the FP-GA chip. In this paper, the design ideas, working principle and simulation results of each main module in the system are introduced in detail. The design simplifies the peripheral circuit of the system, saves the cost, increases the communication capacity of the system, and improves the anti-interference ability of the system.