LTE

Broadband Access Scenario 使用学习方法来进行无线链路的自适应，包含信道编码，交织，信道建模，ofdm调制，解码，解交织，解调等等， 一个完整的无线物理层试验环境(Broadband Access Scenario for the use of learning methods of adaptive wireless links, including channel coding, interleaving, channel modeling, ofdm modulation, decoding, deinterleave, demodulation, etc., a complete test environment for wireless physical layer)

说明：  用matlab实现了通信中经常用的卷积编码，并对其性能进行了分析(Matlab implementation of the communication with the regular use of convolutional coding and its performance is analyzed)

program for distribution stimation of speech

Rosenbrock测试函数，经过实验已经可以使用，现在分享给大家啊 (Rosenbrock test function, after the experiment has been can now share with you ah)

较新的计算Volltera级数预测的程序，可以稳定运行。(a new fangfa of vollteral)

说明：  数据通信中误码检测机制的研究，使用MATLAB对奇偶校验码进行测试(Error Detection Techniques in Data Communications， One-dimensional parity check is simulated by MATLAB)

tA scheme of format conversion optical 16-ary quadrature amplitude modulation (16QAM) toquadrature phase shift keying (QPSK) signal based on cascaded four-wave mixing (FWM) in semiconduc-tor optical amplifiers (SOAs) is proposed. Theoretical analysis and simulations of the format conversionscheme are conducted to validate the feasibility of the proposal. In this proposal, the phase conjugatedof 16QAM signal is generated after the first FWM process in an SOA, and then the QPSK signal is con-verted due to the second non-degenerate FWM (ND-FWM) process in another SOA. The performance andthe optimal design of the 10 Gbit/s format conversion system under various key parameters of SOAs are uated and discussed. Simulation results present useful to enable interconnection between backbonenetwork and access network.

现在的雷达都是在多脉冲观测的基础上进行检 测的，多个脉冲积累后可以有效地提高信噪比，从 而改善雷达的检测能力。积累处理可以在包络检波 前完成，称为检波前积累或者中频积累。信号在中 频积累时要求信号间有严格的相位关系，也就是说 信号是相参的，所以也称为相参积累。此外，积累 过程可以在包络检波后完成，称为检波后积累或者 视频积累。由于信号在包络检波后失去了相位信息 而只保留了幅度信息，所以检波后积累处理就不需 要信号间有严格的相位关系，因此这种积累又称为 非相参积累。实现非相参积累的方法有很多，例如 抽头延迟线积累（FIR 积累）器和反馈积累器。 ()

说明：  VC6.0 读写matlab7.0的mat文件.分享此段代码，运行成功。(read the mat file of the matlab7.0,under the vc6.0)

说明：  对通信系统中的多采样信号进行matlab编程，掌握采样的方式(On the communication system for multi-sampled signal matlab programming, master sampling methods)