edacc

根据软件无线电的思想，提出了一种新颖的数字信号处理算法，对QPSK信号的相位进行数字化处理，从而实现对QPSK信号的解调.该算法允许收发两端载波存在频差，用数字锁相实现收发端载波的同步，在频偏较大的情况下，估算频偏的大小，自适应设置环路的带宽，实现较短的捕获时间和较好的信噪性能。整个设计基于XILINX公司的ISE开发平台，并用Virtex-II系列FPGA实现。用FPGA实现调制解调器具有体积小、功耗低、集成度高、可软件升级、扰干扰能力强的特点，符合未来通信技术发展的方向。(According to the idea of software radio, a novel digital signal processing algorithm, the phase of QPSK digital signal processing, enabling the demodulation of QPSK signals. This algorithm allows the sending and receiving ends of the carrier frequency difference exists, using digital phase-locked to achieve synchronization of sending and receiving end of the carrier, in the case of large frequency offset, frequency offset estimation of the size, adaptive set the loop bandwidth to achieve shorter acquisition time and better noise performance. The whole design is based on the company XILINX ISE development platform, and Virtex-II series with the FPGA. FPGA realization of a modem with a small size, low power consumption, high integration, software upgrades available, the characteristics of strong interference interference, in line with the future direction of ICT development.)

用verilog实现endat2_1驱动,并用signalTap捕捉信号。(Using verilog achieve endat2_1 drive and use signalTap capture signal.)

企业用verilog代码风格规范 本规范规定了IC设计项目开发过程中VerilogHDL源代码的编写总则、要求及模板文件。(Enterprises with verilog code style guide for the preparation of this specification General IC design project development process VerilogHDL source code, requirements and template files.)

用matlab中工具fdatool生成一个低通滤波器，将滤波器系数量化。仿真通过，通带2.5兆，截止频率5M。

I2C EEPROM 存取源碼, 通用ATMEL(I2C EEPROM read/write)

FPGA，用VHDL语言产生可调的PWM波(FPGA, VHDL language adjustable PWM wave)

verilog实现的串口实现代码，可以直接复制使用(verilog achieve serial implementation code can be copied directly use)

八阶巴特沃兹iir数字滤波器，四个二阶节，verilog代码实现，多路分时复用(batterworth，iir，8order，four second order section)

说明：  阿尔泰PCI8664的采集卡labview程序(PCI8664，labview，programm)

这 VHDL/Verilog 或 C/c + + 源代码并作为设计参考说明了如何实现这些类型的功能。这是用户的责任，来验证其设计的一致性和使用形式化验证方法的功能。