倍频器

FPGA经验总结：时序是设计出来的 我们在做详细设计的时候，对于一些信号的时序肯定会做一些调整的，但是这种时序的调整最多只能波及到本一级模块，而不能影响到整个设计。(FPGA Experience: Timing is designed to do the detailed design of our time, for some signal timing will certainly make some adjustments, but adjust this timing can only spread to up to this level of the module, but not affect the whole design.)

调制信号后4倍内插的verilog代码，用于基带成型滤波器输入数据(4 times after modulation signal interpolation verilog code, used to baseband shaping filter input data)

The use of FPGAs for cryptographic applications is highly attractive for a variety of reasons but at the same time there are many open issues related to the general security of FPGAs. This contribution attempts to provide a state-of-the-art description of this topic. First, the advantages of reconfigurable hardware for cryptographic applications are discussed from a systems perspective. Second, potential security problems of FPGAs are described in detail, followed by a proposal of a some countermeasure. Third, a list of open research problems is provided. Even though there have been many contributions dealing with the algorithmic aspects of cryptographic schemes implemented on FPGAs, this contribution appears to be the first comprehensive treatment of system and security aspects.

4位ALU,有两个4位输入，4位输出实现逻辑运算和算术运算，逻辑与或非，加1，减1等等功能(4 ALU, logical and arithmetic operations)

WCDMA数字频域干扰抵消器，绝对的高手写的文档和代码，里面资料齐全方便自学，是很好的学习FPGA实现无线通信模块的资料。(WCDMA Frequency Domain Interference Cancellation figures, the absolute master of written documentation and code, which complete information to facilitate self-learning, is a very good learning FPGA implementation of wireless communications and information.)

浮点数运算的FPGA实现，包括仿真文件。(FPGA realization of floating-point operations, including the simulation file)

说明：  FPGA做波形发生器，产生8种波形，包括三角波，正弦波，锯齿波，方波等。(FPGA is used as waveform generator,Generate 8 waveforms, including triangle, sine, sawtooth, square, etc.)

vhdl语言描述分频器，实现2、4、8、16……分频，经过实践-description language VHDL divider, 2,4,8,16 ... ... realize frequency, through the practice of

2. You may use this core in any way, be it academic, commercial, or -- military. Modified or not.-2. You may use this core in any way, be it academic, commercial, or-- military. Modified or not.

d flip flop t flip flop counter mux using active hdl can be run using 3.2 version and creating new design