altera 公司的15IP源码 亲自测试还不错 有DIV, CONTER

DDS在现在运用月来越广泛，在相对带宽、频率转换时间、相位连续性、正交输出、高分辨力以及集成化等方面都远远超过了传统频率合成技术所能达到的水平，为系统提供了优于模拟信号源的性能。利用DDS技术可以很方便地实现多种信号。在FPGA上实现的DDS-DDS now to the use of more extensive relative bandwidth, frequency conversion time, phase continuity, quadrature output, high-resolution and integration, and other aspects far more than the traditional frequency synthesizer technology can achieve the level To provide a superior analog signal source performance. DDS technology can be used very easily to a variety of signal. FPGA Implementation of DDS

Syplify经典英文教程。内含众多实验例程，Lab 1 Basic Synplify Run；Lab 2 Analyzing Critical Path and Assigning Timing；Lab 3 FSM (Finite State Machine) Compiler Constraints and Attributes(Syplify classic English tutorial. Contains numerous experiments routine, you can help learners to quickly grasp Syplify tips, is a rare foreign experiments tutorial.)

浮点数 矩阵乘法模块 verilog语言编写 可直接调用(Floating-point matrix multiplication module can directly call verilog language)

研究信道噪声对M-ary QAM的影响，适合数字通讯从业者(Effect of channel noise on M-ary QAM in)

用VHDL编写的串口通讯程序，包括几个不同的程序例子，也可以用verilog进行改写。()

本文介绍一种波导双模双带滤波器的设计方法。(This paper presents a new class of dual-mode dualband filters in which each polarization is dedicated to a selected band. The equivalent circuit is a parallel combination of two inline networks that represent each polarization. A transmission zero is generated between the two bands by properly adjusting the relative orientations of the input and output coupling apertures.)

：采用FPGA来实现一个基于OFDM技术的通信系统中的基带数据处理部分，即调制解调器。其中发射部分的调制器包括：信道编码（Reed-Solomon编码），交织，星座映射，FFT和插入循环前缀等模块。我另外制作了相应的解调器，可以实现上述功能的逆变换。-: Using FPGA to implement a technology-based OFDM communication systems in base-band data processing part of the modem. One part of the modulator launch include: channel coding (Reed-Solomon coding), interleaving, constellation mapping, FFT and cyclic prefix insertion modules. I also produced a corresponding demodulator can achieve the above-mentioned inverse transform function.

UC1701串行编程例子，是一个很好的控制ＬＣＤ模块的Ｃ语言串行编程(UC1701 serial program)

基于FPGA的AD和DA设计代码及文档(Design code and document of AD and DA based on FPGA)

一个NiosII可用的LCD12864 IPcore，含例子-A NiosII available LCD12864 IPcore, with examples