BPSK-OFDM信号调制代码 OFDM调制

OFDM（正交频分复用）系统以其抗多径衰落和较高的频带利用率，得到了众多领域的广泛应用。本文就OFDM系统中关键技术之一的信道估计技术进行了介绍。并分别叙述了OFDM系统和信道估计的意义，归纳了信道估计的分类，最后介绍了MMSE、LS及其改进信道估计算法并仿真出结果。(OFDM（orthogonal frequency division multiplexing) has been widely used in many areas for its good resistance to multipath fading and high bandwidth efficiency.In this paper,channel estimation,which is one of the key technologies in OFDM systems,were introduced. Then we discuss the significance of the channel estimation and the classification of channel estimation.Finally,we study the algorithms of channel estimation such as MMSE,LS and LMMSE,and further get the simulation results. )

线性调频信号的时域 频域 模糊度函数的设计(The design of the chirp signal time domain frequency domain ambiguity function)

一种Ipod Shuffle Cable检测程序(One kind of Ipod Shuffle Cable testing procedures)

radar basics and about two a4 sheets.

这个程序除了接收机同步、信道编码没有加入外，基本上反映了一个OFDM系统的特性： 1. qpsk/16qam/64qam映射、解映射 2. OFDM调制解调（循环前缀，FFT等） 3. 非整数采样时刻多径时延的多径信道 4. Rayleigh或者Rician多径信道 5. 信道的连续时变（非block fading） 6. 线性插值信道估计 7. FFT变换域插值信道估计(In addition to this program receiver synchronization, channel coding have not joined, the basically reflect the characteristics of an OFDM system: 1. Qpsk/16qam/64qam mapping, mapping solution 2. OFDM modulation and demodulation (cyclic prefix, FFT, etc.) 3. Non- integer sampling instant multi-path delay of multi-path channel 4. Rayleigh or Rician multipath channel 5. a continuous time-varying channel (non-block fading) 6. linear interpolation channel estimation 7. FFT transform domain interpolation channel estimation)

一份红外通讯的编码设计,已经经过实验，支持一对多。(Encoding of an infrared communication design, and after the experiment, to support one to many.)

说明：  用于iOS平台的 ping demo,对苹果原生代码的封装(use for iOS partform ping demo)

说明：  有关信道估计和信道均衡的仿真程序，希望会有所帮助(Related to channel estimation and channel equalization of the simulation program, hoping it would be helpful)

均匀线阵方向图， MIMO雷达信号建模、波束形成和目标检测(Uniform linear array pattern MIMO radar signal modeling, beamforming and target detection)

是，关于ECG信号特征提取采样率为256Hz的ECG数据设计的滤波器(Yes, on the ECG signal feature extraction 256Hz sampling rate of ECG data for the design of filter)