本程序实现不同频率时钟的产生及其相互转化

cadence verilog reference

关于vhdl对硬件接口8237的编程，可以在进行fpga/cpld设计是作为模块用到-VHDL for the hardware interface on the 8237 programming, you can carrying out fpga/cpld design is used as a module

VHDL Coding style guide

直接数字频率合成，可以直接输出所需要的波形-Direct digital synthesizer, you can direct output of the waveform required

8选1程序，是利用vhdl编写的，自己弄得还能用，上传下(8 Select a program is written using vhdl, allowed herself can use to upload the next)

xilinx CTC IPcore(encoder 和 decoder)的测试，经过AWGN信道。 -This simulation uses a AWGN module to include noise as part of the simulation. Prior to running the simulation, the UniSim models for the encoder and decoder must be generated as well as the AWGN module.

数字通信系统中, 基带信号的频谱一般较宽, 因此 传递前需对信号进行成形处理, 以改善其频谱特性,使 得在消除码间干扰与达到最佳检测接收的前提下,提高信道的频带利用率。目前,数字系统中常使用的波形成形滤波器有平方根升余弦滤波器、 高斯滤波器等。设计方法有卷积法或查表法, 其中: 卷积法的实现,需要消耗大量的乘法器与加法器,以构成具有一定延时的流水线结构。为降低硬件消耗,文献提出了一种分(FPGA Implementation of Square Root Raised Cosine Pulse Shaping Filter)

基于FPGA的fsk调制程序，包括载波的生成，nco的设置(FPGA-based fsk modulation procedures, including carrier generation, nco settings)

本文介绍了在数字下变频(DDC) 中的抽取滤波器系统设计方法和具体实现方案。采用CIC 滤波器、HB 滤波器、FIR 滤波器三级级联的方式来降低采样率。通过实际验证,证明了设计的可行性(This article describes the digital down conversion (DDC) of the decimation filter system design methods and concrete realization of the program. Using CIC filter, HB filter, FIR filter cascade three-level approach to reduce the sampling rate. Through the actual authentication, to prove the feasibility of the design)

verilog实现的“状态机实现AD574数模转换”-verilog to achieve a " state machine to achieve AD574 digital-analog conversion"