ccdf_of_clipped_foltered_ofdm_signal

GTP IP核，高速通信必须学习的部分。(GTP IP kernel, part of high-speed communication that must be learned.)

里面是一些硬件资料，蓝牙音箱的demo板，有需要的可以看下(There is some hardware information, Bluetooth speaker demo board, there is a need facie)

数字信号处理相关实验，包括求系统零极点，快速傅里叶变换，长序列卷积，FIR，IIR等。(Digital signal processing related experiments, including zero and pole of the system, fast Fourier transform, long sequence convolution, FIR, IIR and so on)

说明：  一个4*8天线数的mimo仿真程序，采用16QAM调制解调，在平坦衰落环境下的误码率情况(a 4* 8 the number of MIMO antenna simulation program using 16QAM modulation and demodulation, the decline in flat environment of the BER)

在 OFDM 数学原理和收发模型的基础上，本文对帧同步、定时同步、频率同 步和采样同步给 OFDM 系统所产生的影响进行了理论分析，同时讨论了基于循环 前缀或训练符号的典型 OFDM 同步算法。参考 802.11a 突发数据帧结构和系统参 数，分析几种 OFDM 同步算法用于突发分组传输的性能；在分析了几种经典的信 道估计算法基础上,通过对复杂度和性能的折衷，选择一种适合本文系统的估计 算法。最后作者提出一种改进型 LS 信道估计算法，该算法考虑了 LS 算法中噪声 的影响，从而提高了低信噪比下信道估计的精度。仿真结果表明，改进算法在低 信噪比下具有良好的性能。 (OFDM mathematical principles and transceiver model based on frame synchronization, timing synchronization, frequency synchronization and sampling synchronization to the OFDM system, the impact of the theoretical analysis are also discussed based on the cyclic prefix or training symbols typical OFDM synchronization algorithm . Reference 802.11a burst data frame structure and system parameters, analyze several OFDM synchronization algorithm for burst packet transmission performance several classic channel estimation algorithm based on a compromise between complexity and performance, select a suitable estimation algorithm in this article. Finally, the author proposed a modified LS channel estimation algorithm that takes into account the effects of noise in the LS algorithm, thus improving the low SNR channel estimation accuracy. Simulation results show that the improved algorithm has good performance in low signal-to-noise ratio.)

这是射线信道模型的代码。里面有多个m文件(This is the code for the ray channel model. There are multiple M files in it.)

说明：  This is HC-05 Bluetooth module information

说明：  viterbi卷积码编码,译码,调试通过,可以直接使用(Viterbi convolutional code coding, decoding, debugging pass, can be used directly)

complete code with various mimo detectors:sphere decoder,vblast,ZF,ML

This thesis presents simulation data on array operation in wideband communication systems. It is shown that array structures with closer inter-element spacing outperform structures with much larger inter-element spacing. It is also shown that circular structures outperform linear structures. This performance dierence between the classications of arrays is due largely to the circular array s ability to handle high levels of interference. Even though a diversity combining scheme (MRC) was used in the simulator, the arrays provided interference rejection capabilities due to the closely spaced antenna elements.