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kdtele3
- Make and answer phone calls Detect tone and pulse digit from the phone line Capture Caller ID Support blind transfer, single-step transfer/conference, consultation transfer/conference, hold, unhold. Control of the local phone handset
DSP
- 位同步也叫码元同步或比特同步，在数字通信系统中，接受端不论采用什么解调方式，都要用到码元同步。再模拟通信中不存在码元同步。我们知道消息是通过一连串的码元来表示并传递的，这些码元一般均具有相同的持续时间，接收端就收这些码元序列时，都必须知道每个码元的起该产生一个码元定时脉冲序列，-Bit synchronization code yuan, also known as synchronous or bit synchronization in digital communication syste
OFDM-communication-system-simulation
- 仿真实现OFDM调制解调，在发射端，经串/并变换和IFFT变换，加上保护间隔（又称“循环前缀”），形成数字信号，通过信道到达接收端，结束端实现反变换，进行误码分析-Simulation OFDM demodulation, in the launch, the string of/and transform and IFFT transform, plus protection interval (also called "circulation prefix"), forming a digi
FM-
- 调频广播中，为了提高音频高频率端的信噪比，在发射端进行的预加重处理。-FM radio, in order to improve the high frequency end of the audio signal to noise ratio, performed at the transmitter pre-emphasis.
4CPM
- 实现完整的4CPM(h=1/2)调制解调程序，包括消息序列生成，串并转换，升抽样成形滤波，数字上变频，多项式非线性效应，AWGN信道，到接收端数字下变频，降采样，匹配滤波，接收端基带信号星座图。-Message sequence generation, serial-parallel conversion, up sampling shaping filter, digital upconversion, polynomial nonlinear effects, AWGN channel, t
16QAM_matlab
- 实现16QAM完整的调制解调系统，包括基带信号串并转换，星座图映射，升抽样成形滤波，升采样半带滤波，数字上变频，功放的多项式非线性效应，加性高斯白噪声信道，接收端下变频，降采样，匹配滤波，绘制接收端星座图。-16QAM modulation and demodulation realize the complete system, including the baseband signal string and conversion, constellation mapping, samplin