qpsk

tA scheme of format conversion optical 16-ary quadrature amplitude modulation (16QAM) toquadrature phase shift keying (QPSK) signal based on cascaded four-wave mixing (FWM) in semiconduc-tor optical amplifiers (SOAs) is proposed. Theoretical analysis and simulations of the format conversionscheme are conducted to validate the feasibility of the proposal. In this proposal, the phase conjugatedof 16QAM signal is generated after the first FWM process in an SOA, and then the QPSK signal is con-verted due to the second non-degenerate FWM (ND-FWM) process in another SOA. The performance andthe optimal design of the 10 Gbit/s format conversion system under various key parameters of SOAs are uated and discussed. Simulation results present useful to enable interconnection between backbonenetwork and access network.

在vc上做的802.16d ofdm phy的仿真，定点运算，实现的一部分功能，供参考(In the vc on the 802.16d ofdm phy to do the simulation, fixed-point computation, the realization of part of functions, for reference)

东南大学信号与系统MATLAB课后作业源码(Southeast University, Signals and Systems MATLAB source Homework)

Does ad impule noise

能量效率相关通信文档，MIMO技术相关，能效定义(An information-theoretic look at MIMO energy-effi cient communications- valuetools-belmega-lasaulce_final)

高斯过程在回归和分类问题中的应用，注释详细(Gaussian process regression and classification problems in the application, comments, details)

very uesful program about ofdm

OFDM正交频分复用的基带系统，采用QPSK数字调制，统计系统的误码率(baseband of OFDM ，modulation by QPSK)

编写了龙格现象中举例的函数（1/（1+x^2））的三次样条插值图像和原图像的比较，此程序简单适用。(Prepared Runge phenomenon, for example a function of (1/(1+ X ^ 2)) of cubic spline interpolation image and the original image compared to a simple application of this procedure.)

engineering statistic