dianchang

this matlab codes for using in communication systems this codes very important in communication systems.

The radiation pattern, intensity and directivity of doplh chebyshev algorithm are shown in this matlab code

利用元胞自动机算法实现多种车道条件下的交通流模型构造和仿真(Construction of traffic flow simulation model with a variety of lane conditions using cellular automata algorithms)

说明：  清华大学数学建模讲义,可以帮助大家更好的学习数学建模这种课程.(Tsinghua University, Mathematical Modeling handouts that can help us better learning mathematical modeling of such courses.)

详细的介绍了matlab/simulink的实现方法，对从事该工作的同志们有很大帮助(Detailed description of the matlab/simulink implementation method of comrades engaged in the work of great help)

用root-music算法对波达方向（DOA）信号进行DOA估计的matlab程序。(With root-music algorithm for DOA (DOA) signal DOA estimation matlab program.)

gold序列的生成 PN序列Gold序列极好的自相关性 生成64位的PN序列 (Gold sequence generated PN sequence gold sequence excellent correlation )

基于粒子群算法的函数求最大值的matlab程序，自己照书编写的(PSO algorithm based on the function of matlab procedures for the maximum, according to the book written their own)

Space–time block coding is a technique used in wireless communications to transmit multiple copies of a data stream across a number of antennas and to exploit the various received versions of the data to improve the reliability of data-transfer. The fact that the transmitted signal must traverse a potentially difficult environment with scattering, reflection, refraction and so on and may then be further corrupted by thermal noise in the receiver means that some of the received copies of the data will be better than others. This redundancy results in a higher chance of being able to use one or more of the received copies to correctly decode the received signal. In fact, space–time coding combines all the copies of the received signal in an optimal way to extract as much information from each of them as possible.

数字通信调制信号模拟系统:MASK：2ASK，4ASK，8ASK MPSK：2PSK、4PSK、8PSK MFSK：2FSK、4FSK、8FSK 分连续相位CPFSK和离散相位DPFSK两种 MQAM：16QAM、32QAM、64QAM、128QAM OFDM：子载波数可任意选定，映射方式有BPSK、QPSK、4QAM、16QAM、32QAM、64QAM (Digital communication modulation signal simulation system: MASK: 2ASK, 4ASK, 8ASK MPSK: 2PSK 4PSK 8PSK MFSK: 2FSK 4FSK 8FSK continuous phase the of CPFSK and the discrete phase DPFSK both MQAM: 16QAM, 32QAM, 64QAM, 128QAM OFDM: sub- carriers can be arbitrarily selected, and mapping methods are BPSK, QPSK, 4QAM, 16QAM, 32QAM, 64QAM)