fenxinggongjuxiang1

递归实现一个集合的所有的子集的输出。 例如{1，2} 输出{}{1}{2}{1，2}(A subset of the output of recursion)

说明：  LD算法，实现信号的分析，频谱分析，避免矩阵的求逆运算(failed to translate)

包括：用基本粒子群算法求解无约束优化问题，用带压缩因子的粒子群算法求解无约束优化问题，用线性递减权重粒子群优化算法求解无约束优化问题，用自适应权重粒子群优化算法求解无约束优化问题，用随机权重粒子群优化算法求解无约束优化问题，用学习因子同步变化的粒子群优化算法求解无约束优化问题，用学习因子异步变化的粒子群优化算法求解无约束优化问题，用二阶粒子群优化算法求解无约束优化问题，用二阶振荡粒子群优化算法求解无约束优化问题(Include: using the particle swarm algorithm for unconstrained optimization problems, with compression factor of particle swarm algorithm for solving unconstrained optimization problem with linear decreasing weight particle swarm optimization for unconstrained optimization problems, an adaptive weight particle swarm optimization unconstrained optimization problems, random weight particle swarm optimization algorithm for unconstrained optimization problems, with the learning factor synchronous change of particle swarm optimization algorithm for unconstrained optimization problems, with the learning factor asynchronous changes in particle swarm optimization algorithm for solving unconstrained optimization problem , with the second particle swarm optimization for unconstrained optimization problems, with the second-order oscillating particle swarm optimization algorithm for unconstrained optimization problem)

ofdm基于循环前缀的同步算法，很实用，调试通过了的(ofdm synchronization algorithm based on cyclic prefix)

卡尔曼滤波程序，系统为捷联惯导，维数为15的系统方程，参考书目是秦永元惯性导航(Kalman filtering process, the system for the sins, the dimension of the system of 15 equations, a bibliography is ROCKETS inertial navigation)

说明：  3GPP SCM信道模型，根据TS25.996编写(3GPP SCM channel model)

MMSE detection with qpsk

该文件给出了单载波频域均衡中MMSE均衡方法的MATLAB实现，其中包含调制解调，交织，解交织以及编译码，包含了整个通信系统的各部分，希望对大家有帮助。(The document gives the MATLAB single-carrier frequency domain equalization MMSE equalization method, which contains modulation and demodulation, interleaving, de-interleaving and encoding and decoding, including the various parts of the whole communication system, we want to help.)

一个等温边界条件下计算墙角内温度场的小程序，用户输入墙角两侧温度，墙体热导率，设定网格尺寸后程序便会自动迭代求解并同时以矩阵和三维图形的形式输出运算结果。(A small program to calculate the temperature field inside the corner under the condition of isothermal boundary is introduced. When users enter the temperature on both sides of the corner, the thermal conductivity of the wall and the size of the mesh, the program will automatically solve the problem and output the results in the form of matrix and three-dimensional graphics.)

region growing algorithm