Test

在电话拨号时 ，每个按键都使用双频信号进行区分的，本MATLAB程序就是用来模拟发送号码的发送和接受过程，并发出按键音。(In a telephone dial-up, each button using the dual-band signal distinction, the MATLAB program is used to simulate the sending number to send and accept the process and issue the key tone.)

实现 NL_means 算法，用来去噪。并赋带使用例子和实验结果。(Achieve NL_means algorithm to de-noising. And endowed with the use of examples and experimental results.)

FSK modulation and demodulation

在模型阶数和时滞已知与未知情况下，系统辨识与建模的5种最小二乘法。(5 kinds of least square method for system identification and modeling in the model order and time delay are known and unknown.)

M&M载波恢复算法的MATLAB实现，很具有参考价值，精度满足要求(M&M algorithm for carrier frequency estimate)

8位相移键控误码率分析的MATLAB程序(8 phase shift keying bit error rate analysis of the MATLAB program)

das filter: baswed on research by das in filtering

说明：  计算方法参考文献：王宁练：冰川平衡线变化的主导气候因子灰色关联分析 冰川冻土(Calculation References: Wang Ning practice: a balanced line of glaciers to climate change in the dominant factor glacier permafrost gray relational analysis)

小弟初来乍到，供上B样条程序一件，希望各位前辈，多多指教。谢谢(Brother had just arrived for a program on the B-spline, I hope seniors exhibitions. Thank you)

The result is an IS-95CDMA forward link software simulation package ,which mimics real-time data communication from a basestation to a cellular unit. The package simulates an IS-95CDMA forward link cellular system consisting of 3 major components:Transmitter, Communication Channel and Receiver. (The result is an IS-95CDMA forward link software simulation package, which mimics real-time data communication from a basestation to a cellular unit. The package simulates anIS-95CDMA forward link cellular system consisting of 3 major components: Transmitter, Communication Channel and Receiver .)