MIMO-OFDM

In recent years, the number of portable mobile terminal users is increasing with improvement of the wireless communication environment. In addition, mobile multimedia services also bring the increase of wireless traffic and lack of spectrum resources. As a technique for efficient spectrum use, spectrum sharing receives much attention. It dynamically assigns a spectrum channel from a larger area network such as WiMAX to smaller area networks such as WiFi-based wireless LANs and achieves to increase the total wireless communication capacity of this area. In a case where all providers are cooperative, the spectrum sharing can be realized easily and improve user throughput in average. In another case where providers are not cooperative, some spectrum trading methods based on auction theory had been proposed.

Modulation ASK, OOK, BPSK, QPSK, 8PSK Digital modulation techniques

计算图像水平相邻、垂直相邻、对角相邻像素之间的相关性(relativity between pixel of image)

说明：  多输入多输出(Multiple-Input Multiple-Output)技术是无线移动通信领域智能天线技术的重大突破。该技术能在不增加带宽的情况下成倍地提高通信系统的容量和频谱利用率，是新一代移动通信系统必须采用的关键技术。(Multiple input multiple output (MIMO) technology is a major breakthrough of smart antenna technology in the field of wireless mobile communication. This technology can double the capacity and spectrum efficiency of the communication system without increasing the bandwidth. It is a key technology that must be adopted in the new generation of mobile communication system.)

5个HFSS 无源器件包括：八木天线；功分器；耦合器；滤波器；混合网络(5 HFSS passive devices including: Yagi antenna splitter coupler filter hybrid network)

Turbo码的产生及研究现状 Turbo码编码译码 Matlab介绍及仿真结果(KEY WORDS channel-coding, Turbo-code, viterbi-decoding)

对无线通信环境下的多径衰落和阴影衰落进行的建模。给出了一些仿真的建议(Modeling on multi-path effect and shadowing under wireless communication system. And this code gives some advice on simulation of these situation.)

kd树，matlab源码 kd树，matlab源码(kdtree wiritten in matlab)

经典的MIMO—OFDM外文书籍，是本人迄今为止见过写的最好的。内含matlab代码。(classic MIMO-OFDM book，the best book which i have met。include matlab codes)

说明：  雷达发射宽带信号，线性调频信号模糊度函数(Radar transmitting wideband signal, ambiguity function of LFM signal)