daima

一个关于语音电话的程序( About pronunciation telephone procedure )

认知无线电中基于BPSK循环自相关函数的信号检测，时域上的经典算法，许多论文引用的方法。(signal dection based on cyclostationary of BPSK in Congnitive Radio)

说明：  实现蒙特卡罗分析，可以直接调用进行对误码率等数字通信的相关参数分析(The realization of the Monte Carlo analysis, can directly call on the bit error rate for digital communications, such as analysis of relevant parameters)

绘制了24课GPS卫星围绕地球旋转的动态图(A dynamic map of the rotation of GPS satellites around the Earth in lesson 24 has been drawn.)

超宽带无线通信 脉冲调制系统 加了导频脉冲后的系统 matlab程序 很不错的 (ultra-wideband wireless communications pulse modulation system plus the pilot pulse system Matlab procedure very good)

注水算法，经典注水算法在MIMO自适应资源分配中功率分配的最优算法(water filling algorithm)

16QAM信号 64QAM信号的产生和分析，星座图，频谱，功率谱(6QAM signal 64QAM signal generation and analysis, constellation, spectrum, power spectrum)

说明：  在实际的调谐解调电路中，采用的是非相干载波解调，本振信号与发射端的载波信号存在频率偏差和相位抖动，因而解调出来的模拟I、Q基带信号是带有载波误差的信号。这样的模拟基带信号即使采用定时准确的时钟进行取样判决，得到的数字信号也不是原来发射端的调制信号，误差的积累将导致抽样判决后的误码率增大，因此数字QPSK解调电路要对载波误差进行补偿，减少非相干载波解调带来的影响。(In the actual tuning and demodulating circuit, non-coherent carrier demodulation is adopted, and the frequency deviation and phase jitter of the local oscillator signal and the carrier signal of the transmitting end are present, and thus the demodulated analog I and Q baseband signals are signals with carrier error.)

宽带无线通信OFDM技术.北京邮电大学王文博主编(OFDM broadband wireless communications technology. Wenbo Beijing University of Posts and Telecommunications Editor)

对消去短环的LDPC码校验矩阵的构造进行分析，发表在通信技术上。(Eliminate short-check matrix ring construction of LDPC codes )