delay-of-relay-HARQ

讲述UKF无迹滤波的原理得子程序，值得一看(About the principles of UKF was no trace filter subroutine, worth a visit)

VC++实现的GAC水平集， 这样的程序很少见，大部分都是matlab编写的，虽然程序比较简单，但是很有借鉴和参考价值。 有曲线演化的过程(GAC level set VC++ implemented, such programs are rare, and most of them are prepared matlab, although the procedure is relatively simple, but very useful reference and the reference value. Curve evolution process)

包含DVB-T标准中的内交织，内编码，卷积交织，和基4FFT 1024。所有程序为MATLAB实现，特别推荐FFT旋转因子求法。(Includes DVB-T standard within intertwined, with coding, Convolutional Interleaver, and base 4FFT 1024. MATLAB realization of all the procedures, in particular, recommended rotating factor FFT method.)

说明：  提出了正交频分复用(O FDM ) 系统中一种新的载波频偏估计算法L 载波频偏估计过程可分 为获取和跟踪, 其中, 获取过程和时间同步是同时完成的L新算法可实现的最大载波频偏获取范围 是整个信号带宽的一半L新的跟踪算法是一个最大似然算法, 在加性白噪声高斯信道(AW GN ) 下, 当N (训练序列长度的一半) 等于128 时, 其性能比Schm idl 算法提高约7127 dB 在多经信道下, 当 信噪比不是很高时, 新算法仍具有优势L(new carrier f requency offset est imat ion scheme in o rthogonal f requency division mu lt ip lex ing (O FDM ) system is p ropo sed. The carrier f requency offset est i2 mat ion includes acqu isit ion and t rack ing, and acqu isit ion as w ell as t im ing synch ro2 n izat ion can be perfo rmed simu ltaneou sly w ith h igh accu racy. The max imum acqu i2 sit ion range can be up to one half of overall signal bandw idth. The p ropo sed t rack2 ing est imato r is a max imum 2likelihood est imato r, and in AW GN channel, abou t 7127dB imp rovemen t is ob tained compared to the Schm idl’s algo rithm w hen N = 128 in mu lt ipath channel, the p ropo sed algo rithm wo rk s w ell at moderate SNR.)

Voicebox is a toolbox for speech analysis and widely used in this field.

Damped Gauss-Newton with Armijo rule

For Edge Detection. we can use bwperim or bwhitmiss

legendshrink reduces the amount of horizontal space taken up by a figure legend by reducing the length of lines. (Best results when the legend box is off.) This is important for small plots because the size of the lines is constant irrespective of the physical size of the figure. Only works for vertical legends, for now.

本程序仿真了正交频分复用的调制与发射，其中包括循环前缀，FFT变换，白噪声信道模拟等部分，最后得出不同信噪比先的系统误码率。(This program simulates the orthogonal frequency division multiplexing modulation with the launch, including the cyclic prefix, FFT, white noise channel analog part of the conclusion that a different signal to noise ratio before the BER.)

详细介绍了多抽样率信号处理的原理，便于更深入了解抽取和内插滤波器的实现(Detailed introduction of multi-sampling rate of signal processing theory, to facilitate a better understanding of extraction and interpolation filters realize)