ex1_1 单位冲激序列 ex1_2 右移20的单位冲激序列 ex1_3 单位阶跃序列 ex1_4 实指数序列 ex1_5 复指数序列 ex...

hi this is ofdm and its fading model

ROC curves illustrate performance on a binary classification problem where classification is based on simply thresholding a set of scores at varying levels. Lenient thresholds give high sensitivity but low specificity, strict thresholds give high specificity but low sensitivity the ROC curve plots this trade-off over a range of thresholds (usually with sens vs 1-spec, but I prefer sens vs spec this code gives you the option). It is theoretically possible to operate anywhere on the convex hull of an ROC curve, so this is plotted too. The area under the curve (AUC) for a ROC plot is a measure of overall accuracy, and the area under the ROCCH is a kind of upper bound on what might be achievable with a weighted combination of differently thresholded results from the given classifier -ROC curves illustrate performance on a binary classification problem where classification is based on simply thresholding a set of scores at varying levels. Lenient thresholds give high sensitivity but

一个tapi的讲解幻灯片-A tapi`s explanation slide show

点到点无线通信实验，属于无线传感器网络中基础通信类相关代码。-Point-to-point wireless communications experiment, wireless sensor networks belong to basic communications in the relevant category code.

程序使用了自相关性和互相关性较好的gold码作为扩频序列，直扩，扩频增益设置为31，模拟用户数为4-Program uses a self-correlation and cross-correlation of the better gold code as spreading sequence, direct expansion, spreading gain is set to 31 to simulate the number of users of 4

Advanced firmware uploader s main body source code. For sti5518

周立功lpc2210开发板启 动源码详细 分析-Week Ligong lpc2210 development board to start a detailed analysis of source

关于超宽带多用户检测的大家可看看，很好的程序-on Ultra-Wideband Multi-User Detection you can see, very good procedures

应用背景我们提出了分散认知的协议允许二级用户自主搜索频谱没有中央协调员或专门的机会通信信道。硬件和能量约束，我们假设一个二级用户可能无法执行全频谱感知或可能不愿意监控没有数据传输时的频谱。我们发展基于机会频谱接入的分析框架部分可观测马尔可夫决策理论的研究（POMDP）。这一决策理论方法集成了设计频谱接入协议的频谱接入协议确定的物理层和交通统计由原网络应用层。它也允许频谱感知误差和约束容易合并与主要用户的碰撞概率。在此POMDP框架，我们提出了认知MAC协议优化二次用户的性能，同时限制主用户的干扰。次优策略与减少的复杂性，但可比性能的发展。无需附加控制信息交换次级发射机和接收机，建议分散协议确保在频谱之间的同步跳频在碰撞和碰撞的存在下，发射器和接收器频谱感知误差。关键技术本文提出了一种分散的方法Ad hoc网络MAC OSA。一种新的特征这项工作是剥削的机会，在插槽水平，允许低利率应用（如传感器节点）与主要用户。POMDP框架使一个机会用户使最优基于信念向量的感知和访问决策总结了基于网络状态的知识对所有过去的决定和意见

此代码可以处理的误码率仿真 QPSK 和 BPSK 为各种价值观的信噪比。至少 10 ^6 传输的比特一直被认为。10 不同 itaeration 信噪比已被采取。