编程作业

正交频分复用（OFDM）是一种特殊的多载波传输技术。它可以有效地对抗多径衰落，能够以很高的频谱利用率来实现高速数据传输。分析介绍了OFDM系统的基本原理及系统性能，以Matlab为开发平台，仿真了OFDM系统的误码率，仿真结果表明OFDM系统在较低信噪比下也具有较好的性能(Orthogonal Frequency-division Multiplexing（OFDM） is a special kind of multi-cartier transmission technology. It can effectively overcome multi-path fading and increase the spectral usage efficiency to implement high-speed data transmission. This paper analyzes the basic principle of OFDM system and system performance, and simulates the Bit Error Rate （BER） of OFDM system on the platform of Matlab. The simulation results show that the OFDM has a good performance.[)

用于均衡DPSK信号的JD-MLSE算法，为matlabb程序，输入DPSK解调的两路信号，判决得到所需的bit序列，并计算误码率(It s used for electronical equalization based on joint-decision maximum likelyhood estimation (i.e. JD-MLSE).)

SIFT特征点检测，配准、匹配，代码经验证可用(sift match ransac appendimages)

对HARQ系统的吞吐量分析，主要为数据分析和统计，小波包分析提取振动信号中的特征频率。( HARQ throughput analysis of the system, Mainly for data analysis and statistics, Wavelet packet analysis to extract vibration signal characteristic frequency.)

对一幅彩色图像进行融合，用到颜色空间转换，数字矩阵到图像显示的转变，同屏显示其效果图，有待进一步研究(Color images of an integration, using the color space conversion, digital matrix image display to change, with the screen display the effect of map, be subject to further study)

运行可实现的lpc matlab编码源代码 (Operation can realize the LPC matlab source code)

解集模型，将一年的径流分解为月径流 程序中含有解释说明(Disaggregate yearly streamflow to monthly streamflow)

TD-SCDMA系统无线接口层三技术规范-无线资源控制协议 TD-SCDMA System Radio Interface Layer 3 Technical Specification: Radio Resource Control Protocol (TD-SCDMA radio interface layer III system specification- Radio Resource Control Protocol TD-SCDMA System Radio Interface Layer 3 Technical Specification: Radio Resource Control Protocol)

非线性光纤光学中用来仿真二阶色散、三阶色散以及SPM的程序，对刚开始进行科研的人有很大帮助。(Fiber optics used for simulation of nonlinear second-order dispersion, third-order dispersion and SPM process right to conduct scientific research in the beginning there is a great help.)

mat lab code for linear convolution.