hammingcodes3

PV array with inverter PWM

calculating 1D photonic crystal (calculating 1D photonic crystal)

matlab library to laplician pyramids

可直接计算得到多重分形谱,本程序的性能已经达到较高水平，关于小波的matlab复合分析。( It can be directly calculated multi-fractal spectrum, The performance of the program has reached a high level, Matlab wavelet analysis on complex.)

说明：  图像特征提取，计算图像的7个Hu不变矩特征，matlab例程(Seven Hu invariant moments features of images)

一个实现vc与matlab接口的程序，可在vc构建的平台上实现matlab的函数调用(a realization vc Matlab interface with the procedures in vc build on the platform to achieve the function call Matlab)

说明：  基于K-MEANS的图像退色算法。平台为MATLAB6.5及以上。(Based on the K-MEANS algorithm image fade)

a new and complete code for MDP prosses

Block-interleaver/deinterleaver according to the IEEE 802.11-2007 Defined by two step-permutation : The first permutation ensures that adjacent coded bits are mapped onto nonadjacent sub-carriers. The second ensures that adjacent coded bits are mapped alternately onto less and more significant bits of the constellation and, thereby, long runs of low reliability (LSB) bits are avoided. Tested and works well

说明：  任务：设计一个4×2.5Gbit/s 长距离光纤传输系统，并利用OptiSystem 仿真验证。 要求： 1．采用波分复用技术，波长设置以100GHz 为间隔，频率分别为193.1THz、193.2THz、193.3THz、193.4THz，每个波长传输速率为2.5Gbit/s（NRZ），传输距离为300km。采用常规光纤，光纤损耗系数为0.25dB/km。 2．单通道光发送机最大输出功率为0dBm，光接收机的接收光功率不低于－26dBm，过载点为－10dBm。 3．可以采用EDFA 作为线路放大器，其中EDFA 的输入功率限制在－18～2dBm，最大输出功率20dBm，增益范围为13～25dB，噪声指数4.0dB。(Task: Design a 4 x 2.5 Gbit/s long-distance optical fiber transmission system, and use OptiSystem simulation to verify. Requirement: 1. Using wavelength division multiplexing technology, the wavelength is set at 100GHz intervals, with frequencies of 193.1 THz, 193.2 THz, 193.3 THz and 193.4 THz, respectively. The transmission rate of each wavelength is 2.5 Gbit/s (NRZ), and the transmission distance is 300 km. The loss coefficient of conventional optical fibers is 0.25dB/km. 2. The maximum output power of a single-channel optical transmitter is 0 dBm, and the receiving power of an optical receiver is not less than -26 dBm, and the overload point is -10 dBm. 3. EDFA can be used as line amplifier, where the input power of EDFA is limited to - 18-2dBm, the maximum output power is 20dBm, the gain range is 13-25dB, and the noise index is 4.0dB.)