zcross

无敌SIFT,来自于大牛DG。特征提取的必备良品。(-outstanding SIFT by the inventor )

An all-optical regeneration scheme for DQPSK and QPSK signals using phase-sensitive amplifiers (PSAs) is studied and its effectiveness is investigated through numerical simulations. By leveraging the ability of PSAs to provide phase and amplitude regenerative amplification, we show significant simultaneous suppression of both phase and amplitude noises of (D)QPSK signals under optimized conditions. The reduction in the phase noise variance of a noise-corrupted DQPSK signal obtained by one such regenerative amplification can be as large as 5.5 folds, showing its good potential for distributed optical regeneration of (D)QPSK signals.  2008 Elsevier B.V. All rights reserved.

得到可观测到的卫星的坐标后，遍历所有的4个卫星组合（4点定位）计算GDOP。(To obtain the coordinates of the satellite can be observed after traversing all combinations of four satellites (4-point positioning) Calculation GDOP.)

信道编码采用卷积码，解码使用Viterbi解码。调制给出QPSK、16QAM 两种调制方式，并在AWGN和瑞利信道两种信道模型下传输。(Channel coding using convolutional codes, decoding using the Viterbi decoder. Given modulation QPSK, 16QAM modulation in two ways, and in the AWGN and Rayleigh channel model of two-channel transmission.)

A/D convertor, PCM, quantization

说明：  matlab中编的基于遗传算法的转子故障特征选择的小程序，新手程度，仅供参考(matlab in the series based on genetic algorithm rotor fault feature selection of small programs, novice level, for reference only)

这是一个WiMAX链路级matlab仿真程序，可以用在许多方面的仿真，如误码率、误比特率以及系统的吞吐量等，非常完整的一个程序。(This is a WiMAX link level matlab simulation program can be used in many aspects of the simulation, such as bit error rate, bit error rate, and throughput of the system and so on, very complete a program.)

用雅克比迭代法解椭圆型方程，这是椭圆型方程的差分解法。见于孙志忠编的《偏微分方程数值解法》的p41例题( Solutions of Elliptic Equations with Jacques iterative method, which is the solution of elliptic differential equations. Seen SUN Zhi-zhong series "Numerical Solution of Partial Differential Equations" examples of p41)

this is the code for the image compression using discrete cosine transform

Gabor filter algorithms in matlab