Conversor-Digital-Analogo

iMusic 一个在线音乐源码 (music online)

说明：  XML解析，功能很强大，大家可以参照下，肯定会有用(XML Parser，powerful functions，you can learn something from it easily.It must be useful to you!)

导航栏，精选ios编程学习源码，很好的参考资料。(The navigation bar, select learning IOS programming source code, a good reference.)

ios 6 programming and example source

NSString框架的学习，包括NSNumber等 NSString框架的学习，包括NSNumber等(NSString framework of learning, including learning NSNumber etc. NSString framework, including NSNumber etc.)

还是一个uitableview 变化的demo 大家可以参考一下(Uitableview change or a demo we can reference)

Implementation of Ceaser Cipher in C

FOR HELP AND DOCUMENT FOR POWER FCD C

objct-c aop编程，使用Method Swizzling方法

主要用途是对抗多径衰落。由于多径衰落的存在，使得同一个帧由于路径不同，到达用户端的时延有先有后。在相关的频域上的会造成子载波之间的相互干扰，影响 性能。另外，由于有了循环前缀，使得IFFT FFT操作把原来的线性卷积变成循环卷积，大大简化了相应的信号处理复杂度(The main purpose is to fight against multipath fading. Due to the presence of multipath fading, the first after they have the same frame different paths to reach the client delay. Would cause mutual interference between sub-carriers in the frequency domain, affecting performance. In addition, thanks to the cyclic prefix, so IFFT FFT operation to the linear convolution of the original into a circular convolution, greatly simplifying the corresponding signal processing complexity)