radar_matlab2018

包括turbo，polar，LDPC信道编码，交织，QAM，SCMA，MIMO检测，译码等(Including turbo, polar, LDPC, channel coding, interleaving, QAM, SCMA, MIMO detection, decoding, etc.)

本程序通过分析OFDM信号的循环平稳特性，利用循环谱对OFDM信道进行估计。(This procedure by analyzing the OFDM signal is cyclostationary properties, the use of cyclic spectrum of the OFDM channel estimation.)

Jakes提出了基于正弦波叠加法的Jakes仿真模型。Jakes仿真模型是一种确定模型，产生的信号非广义平稳且不具各态历经性，其二阶统计特性与Clarke参考模型也相差较大。(Jakes fading channel model)

对当前通信信号中常用的数字调相信号BPSK、QPSK、1／4一QPSK、8PSK的调制识别问题，提出了一种基于信号差分高阶累积量的识剐算法。该算法分两个层次进行调制识别，首先利用信号的四阶累积量特征对BPSK、QPSK和{1／4一QPSK、8PSK}信号进行识别，然后再利用信号差分的四阶和八阶累积量特征对1/4-QPSK、8PSK信号进行识别。从理论上分析了的该算法的有效性，并通过计算机仿真验证了算法具有良好的性能。(A recognition algorithm based on differential high-order cumulant is proposed for the modulation recognition problems of BPSK, QPSK, 1/4-QPSK and 8PSK, which are commonly used in current communication signals. The algorithm is divided into two levels for modulation recognition. Firstly, BPSK, QPSK and {1/4-QPSK, 8PSK} signals are identified by using the fourth-order cumulant characteristics of signals, and then 1/4-QPSK and 8PSK signals are identified by using the fourth-order cumulant and eighth-order cumulant characteristics of signal difference. The validity of the algorithm is analyzed theoretically, and the good performance of the algorithm is verified by computer simulation.)

说明：  HHT变换的核心是EMD,在此项过程中通过EMD的编程和HHT的编程来实现了希尔伯特黄变换,可以看出处理此方法用来处理非线(The core of HHT transform is that EMD, realizes Hilbert Huang transform through EMD programming and HHT programming in this process. It can be seen that this method is used to deal with non-linear.)

说明：  OFDM信号的循环谱密度，非常详细，根据协议编的，外面非常少见！(OFDM signals in cyclic spectrum density, very detailed, made under the agreement, the outside is very rare!)

PLC动态库 vb编程 支持s7-1200(PLC Dynamic Library Support s7-1200)

doccument pdf sur le jtag du la openbox 800 avec shema et jkeys commandes

伽利略信号产生和仿真分析书中的全部源代码，包括导航各频段信号产生，测距码程序，以及BOC信号频谱相关特性。另有一另外的BOC信号程序例程~(all code in GALILEO Signal generation and simulation analysis)

说明：  kode untuk polar coding