shiliangqiyizhifa

breadthfirstsearch FOR SEARCH ROAD

this code provide to understanding SVM

为了提高移动通信系统中数据传输的有效性能,降低GMSK调制系统的误码率. 首先对GMSK调制系统进行分析,得到不同BT值GMSK调制的移动通信系统误码率和带宽的关系.通过引入具有纠错性能的编码技术,降低信息传输的误码率,提高系统的有效性. 本文给出了引入编码技术的GMSK调制系统的仿真模型,仿真结果表明,在相同的信噪比下,系统的误码率降低了1～2dB.(This paper mainly intends to improve the performance of the communication system and decrease the error bit rate of the information. First , the GMSKmodulation system was analyzed , and the relation of the BER and bandwidth in the different BT value was obtained. By introducing the encoding technology , the error bit rate of the information was lowered so that the performance of systemwas improved. This paper presents a simulated model . The results show that the BER of the system in the same SNR can lower 1 to 2 dB.)

在用matlab做语音信号处理时经常用到的enframe等函数，这在matlab中是没有的，需要下载专门的工具箱，这是从官网上下载的，可直接解压安装。具体安装方法网上一搜就能搜到。(Frequently used in speech signal processing using matlab enframe function in matlab there is no need to download a special toolbox, which is downloadable from the official website, you can directly extract the installation. Specific installation methods online search can be found to)

一种fft算法的具体实现方式，代码量少。(One kind of Adelaide fft algorithm implementations, less code.)

Constant k filters, also k-type filters, are a type of electronic filter designed using the image method. They are the original and simplest filters produced by this methodology and consist of a ladder network of identical sections of passive components. Historically, they are the first filters that could approach the ideal filter frequency response to within any prescribed limit with the addition of a sufficient number of sections. However, they are rarely considered for a modern design, the principles behind them having been superseded by other methodologies which are more accurate in their prediction of filter response.A filter in which the product of the series and shunt impedances is a constant that is independent of frequency.

(1) 新建一个工程demo2，设计一个类Student，其成员变量包括学号(no)、姓名(name)、性别(sex)、专业(major)、联系方式(phone)和地址(addr)。 (2) 为类Student定义成员函数writeTo，实现从给定文本文件中读取学生数据，接口如下： void writeTo (char filename[ ]) (3) 为类Student定义成员函数readFrom，实现将学生数据保存到给定文本文件，接口如下： void readFrom (char filename[ ]) ((1) Create a new project demo2, design a class Student, whose member variables, including school (no), name (name), gender (sex), specialty (major), contact details (phone) and address (addr). (2) define the Student class member function writeTo, students achieve reading data a given text file, the interface is as follows: void writeTo (char filename []) (3) define the Student class member function readFrom, students will achieve data save to text file given, the interface is as follows: void readFrom (char filename []) )

Kriging代理模型适用于设计变量和试验样本较多的数据，建立设计变量与数据结果之间的数据模型，可用作进一步的优化设计(Kriging model applies to multiple design variables and large samples , can be used for further optimizational design)

蒙特卡洛方法中随机数的产生和检验，乘同余法。(The Monte Carlo method, random number generation and testing, multiplication congruential method.)

用matlab画出α=0,0.5,1的余弦滚降系统的频谱，并画出各自对应的时域波形。以α=1的余弦滚降系统为例，进行二进制双极性数字基带信号传输，试画出接收端的基带信号波形及眼图。(Matlab draw α = 0,0.5, 1 cosine roll-offs system of spectrum, and draw their corresponding time domain waveform. To α = 1 cosine roll-offs system as an example, the binary dual polarity digital baseband signal transmission, try drawing the receiving end baseband signal waveform and eye chart.)