期刊名称：International Journal of Advanced Research In Computer Science and Software Engineering
印刷版ISSN：2277-6451
电子版ISSN：2277-128X
出版年度：2013
卷号：3
期号：2
出版社：S.S. Mishra
摘要：In this research paper, we used three different kinds of methods that are theoretical, semi analytical and Monte Carlo for producing bit error rate analysis. It is possible to evaluate the estimated standard deviation of the mea sured BER, like in a Monte Carlo simulation, so that it is possible to associate a confidence to the results. We test the methods both in a simple optical system distorted by group velocity dispersion (GVD) and in more complex differential phase shift keying (DQPSK) systems. In the last w e measured computational savings up to 70% compared with ordinary methods. Eb/N0range in all the below mentioned method is taken as same i.e. 0:17dB, and also modulation type is considered to be DPSK (Differential Phase shift keying) for all methods .Later we plot the bit error rate waveform in all the methods to know variation of BER with respect to Eb/N0range. Bit error rate tool can generate a large set of theoretical bit error rate assuming that for all types of modulations. Typically number of error value at least hundred producing accurate bit error rate, if the number of the bit value is so small then the simulation will calculate few errors and error rate might be accurate. Bit error rate runs the simulator function ones for each value of the Eb/N0 in order to gather bit error rate data. BER tool loads the model into memory w hich in turn initializes several variables in the MATLAB workspace, runs the simulation once for each value of Eb/N0, and gathers BER data. BER tool creates a list in the data view er.
