VHDL扩频通信系统.docVIP

摘 要 随着社会信息化程度的加强，人们对通信质量要求越来越高。扩频通信技术具备了，而且还有选择性寻址能力强、截获概率低、抗多径干扰、易组网等优点。现代军事通信、移动通信、卫星通信、军事战术指挥控制通信。通信可分为直接序列、跳频、跳时混合 扩频通信系统完成信号处理，电路的处理速度提。器件体积大、功高模拟器件受环境影响较大在设计中实现。电路存在成本高、采购困难等弊端。近几年，EDA技术和微电子技术发展，通信成为数字信号处理领域的新生力量。基于上述现状本是用VHDL语言对直接序列进行编程实现，在QuartusII软件环境下关键词VHDL；直接序列；；Quartus II ABSTRACT With the strengthening of social information degree, people demand more and more high quality of communication.Spread spectrum communication technology has many advantages of modern communication system, such as transmission distance far enough capacity is large enough Security performance is good, but also improve the utilization rate of spectrum selective addressing capability Low probability of intercept Resistance to multipath interference The advantages of easy to networking.Spread spectrum communication technology is widely applied in many fields, including modern military communication mobile satellite communications military tactics and command and control communications.Spread spectrum communication according to the classification of works can be divided into direct sequence spread spectrum frequency hopping spread spectrum jump time four frequency hopping spread spectrum and hybrid spread spectrum mixed direct sequence spread spectrum adaptation on multiple access communication or discrete addressing and multiplexing, etc. Spread spectrum communication system to accomplish the signal processing is becoming more and more complex, processing speed of the circuit must also improve the early discrete device corresponding high volume consumed power, analog devices are greatly influenced by the environment, in the design is not easy to achieve the goal of integrated circuit after have drawbacks such as the high cost of purchasing difficulty Development momentum in recent years, the EDA technology and microelectronic technology, the realization of frequency hopping communication is mostly using EDA technology, so it become a