ofdm

不同的相邻分组数目v实现的pts抑制ofdm峰均比的算法，可以仿真出v越大，papr的性能越好(Different number of adjacent sub-v realize the pts OFDM PAPR suppression algorithms, simulation of v can be greater, papr better performance)

说明：  该文件LDPC码的校验矩阵的matlab代码，可以使用该校验矩阵得到规则LDPC码。(Matlab code of LDPC check matrix)

通过随机数产生原理进行verilog编程，从而实现FPGA的随机数产生(Through random number generation principle for Verilog programming, so as to achieve the FPGA random number generation)

基于MATLAB的OFDM/OQAM调制系统的仿真与误码率测试(Simulation and BER MATLAB the OFDM/OQAM modulation system test)

本代码描述了OFDM/OQAM的基本仿真框架，AWGN信道下的ber性能。OFDM/OQAM 是一种很好的多载波系统。(This code describes the basic simulation framework for OFDM/OQAM ber performance in the AWGN channel. OFDM/OQAM is a good multi-carrier system.)

无线光通信中的几种常见调试方式的误码率性能(the performance of bit error rate of some modulation schemes in wireless optical communication)

说明：  基于quartus的布斯乘法器的verilog 实现。布斯乘法算法是计算机中一种利用数的2的补码形式来计算乘法的算法。该算法由安德鲁·唐纳德·布斯于1950 年发明，当时他在伦敦大学伯克贝克学院做晶体学研究。布斯曾使用过台式计算器，由于用这种计算器来做移位计算比加法快，他发明了该算法来加快计算速度。(The verilog codes of booth multiplier based on quartus. Booth multiplication algorithm is a computer algorithm using the complement form of number 2 to calculate the multiplication. The algorithm was invented in 1950 by Andrew Donald booth, who was working on crystallography at birkbeck college, university of London. Booth used a desktop calculator, and because it was faster to do shifts than to add, he invented the algorithm to speed up the calculations.)

一个完整的ofdm调制系统的仿真程序，包含PN码自动生成，串并转换等各功能模块和算法，重点针对不同信道条件对常用及各种信道盲均衡算法进行仿真分析比较，对不同原型滤波器算法进行研究分析，分析比较QAM系统，供博士毕业论文参考(Ofdm modulation of a complete system simulation program, including automatically generated PN code, and convert the string Other functional modules and algorithms, focusing on a different channel conditions and a variety of common blind channels are Balance simulation algorithm analysis and comparison of different research and analysis prototype filter algorithm, sub- Analysis of more QAM systems, Ph.D. thesis for reference)

The PCI Local bus concept was developed to break the PC data I/O bottleneck and clearly opens the door to increasing system speed and expansion capabilities. The PCI Local bus moves high speed peripherals from the I/O bus and places them closer to the system’s processor bus, providing faster data transfers between the processor and peripherals. The PCI Local bus also addresses the industry’s need for a bus standard which is not directly dependent on the speed, size and type of system processor. It represents the first microprocessor independent bus offering performance more than adequate for the most demanding applications such as full-motion video.(The PCI Local bus concept was developed to breakthe PC data I/O bottleneck and clearly opens the doorto increasing system speed and expansion capabilities.The PCI Local bus moves high speed peripheralsfrom the I/O bus and places them closer to the system sprocessor bus, providing faster data transfersbetween the processor and peripherals. The PCI Localbus also addresses the industry s need for a bus standardwhich is not directly dependent on the speed, size and type of system processor. It represents thefirst microprocessor independent bus offering performancemore than adequate for the most demandingapplications such as full-motion video.)

详细的讲述了linux的ip/tcp通信部分的协议栈，对开发很有帮助(Linux detail of the ip/tcp communication part of the protocol stack, on the development of useful)