ofdm 调制器

TAPI是微软集成在操作系统中的一个功能,我们利用TAPI可以实现通信 传真的功能,该实例主要用于电话语音方面的,值得借鉴.-TAPI is the Microsoft operating system integrated into a functional, we can realize the use of TAPI fax communication capabilities, the examples of the major aspects for telephony, is worth learning from.

资源描述方波、正弦波、锯齿波、三角波、扫频信号发生器FPGA实现，其中信号频率通过改变NCO频率控制字，其中方波占空比可以改变，几个模块都通过硬件验证，NCO控制字32位，精度高

test 代码/*输出链表数据*//*建立链表*/-test code/* output list of data*//* the establishment of linked list* /

在以往的关于多用户检测程序，给出的多是针对CDMA系统的。出于长期以来笔者对TD-SCDMA系统应用研究，在这里我进行了一些修改，内容如文：-In the past on the multi-user detection procedures are given for CDMA systems. For a long time writer on the TD-SCDMA system, applied research, I made some changes to the content such as text:

移动电话主要采用频率复用，但分配给移动电话的频段很少，远不能满足用户的需要。 因此就提出将地区划分成小区，称为蜂窝（Cell），每个蜂窝内使用一组频率，相隔一段距离后，相同的频率又可重复使用。 -The main use of mobile phone frequency reuse, but allocated to the small-band mobile phone, far from being able to meet the needs of users. Therefore proposed to be divided into residential areas, known as cellular (Cell), each use a set of cellular frequencies, separated by some distance, the same frequency can be reused.

这是一篇关于p2p协议和sip协议互通的文章,他们共同作用来实现分布式的功能:语音,视频,文件等功能-This an agreement on p2p sip agreement and the exchange of articles, they work together to achieve distributed functions : voice, video, documents, etc. Function

ex1_1 单位冲激序列 ex1_2 右移20的单位冲激序列 ex1_3 单位阶跃序列 ex1_4 实指数序列 ex1_5 复指数序列 ex1_6 随机序列 ex1_7 系统冲激响应（impz函数） ex1_8 系统传递函数（freqz函数） ex1_9 零极点增益 ex1_10 residuez函数应用 ex1_11 Lattice结构全极点IIR系统 ex1_12 Lattice结构全零点FIR系统 ex1_13 Lattice结构零极点结构-unit impulse sequence ex1_1 shifted to right ex1_2 unit 20 unit step impulse ex1_3 sequence sequence sequence ex1_4 index is ex1_5 complex exponential sequence ex1_7 random sequence ex1_6 system impulse response (impz function) ex1_8 system transfer function (freqz function) ex1_9 zeros and poles gain function ex1_10 residuez application ex1_11 Lattice all-pole IIR system structure ex1_12 Lattice structure of the whole system against ex1_13 Lattice Structure of FIR zero-pole structure

中文RFC文件，无需翻译，对学习很有帮助！

用VHDL实现的FFT,经过测试，效果很不错！值得一看-Use vhdl to do fft，after test，we can see the result is very good!

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