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本文作的工作是利用信号仿真器仿真GPS数字中频信号，并借助这些仿真信 号完成对GPS信号的捕获和跟踪性能的研究。(This article is for the use of GPS signal simulator simulation digital IF signal, and make use of these simulation signal completion of the GPS signal acquisition and tracking performance study.)

an efficient edge preserving approach

51单片机主机和从机通过485测AD电压，有程序和仿真(51 single chip computer host and slave machine through 485 AD voltage, program and simulation)

802 11e协议,在ns仿真中使用,包括使用方法()

。研究了瑞利衰落信道下两跳放大前传协作中继系统的最优化功率分配问题。推导了高信噪比条件下的协作中继系统的中断概率的理论公式. 协作中继 放大前传 最优化功率分配 误符号率 中断概率(Optimal power allocation for two hops amplify- and- forward cooperative relaying communication systems in Rayleigh fading channel was studied. cooperative relaying amplify-and-forward optimal power allocation symbol error rate outage probability)

说明：  Security in Mobile Ad Hoc Networks

该代码实现的功能是对.tif格式的图片自动分页，并且可以实现数据的查找切割提取。(To achieve the functions of the code. Tif format images automatically paging, and extract data to find cutting.)

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.)

bcjr算法 map形式 适用于卷积码和turbo码(bcjr algorithm map form for convolutional codes and turbo codes)

说明：  本程序是QPSK的AWGN通道下的误码率分析，里面包括matlab源程序，(Analysis of BER in AWGN channel of QPSK)