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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.

可以运行的m4k20功率分配图，mimo功率优化,OFDM典型仿真程序，贪婪算法仿真程序，以及16QAM仿真程序，经过修改的可以使用(M4k20 can run the power distribution map, mimo power optimization, OFDM typical simulation program, greedy algorithm simulation program, as well as 16QAM simulation procedures can be modified to use)

信号估计 最大似然估计模块 克拉美罗界模块(Maximum likelihood estimation modules)

微软RIL白皮书。介绍了微软RIL(Radio Interface Layer)的架构和开发所必须具备的知识，包括简介、RIL Modem接口、开发环境、平台实现、测试，以及相关信息(Microsoft White Paper RIL. It introduced Microsoft RIL (Radio Interface Layer) architecture and the necessary knowledge for developer, including the Introduction, RIL Modem interface, development environment, platform, testing, and related information)

说明：  opnet学习入门视频教程 这个对初学者很有用的(opnet Getting Started video tutorial to learn this very useful for beginners)

一个事件提醒程序,类似于手机中的事件提醒(An event to remind the procedure, similar to events in the mobile phone to remind)

一种轻便高效的数据格式，平台无关、语言无关、可扩展，可用于通讯协议和数据存储等领域。完整的编译工程。(A portable and efficient data format, platform-independent, language-independent, scalable, can be used in communication protocols and data storage and other fields. Complete compilation engineering.)

很好的OFDM系统载波同步算法，采用了长短训练序列分别进行小数倍频偏估计和整数倍频偏估计(This is a good carrier synchronization algorithm for OFDM system, using the long he short training sequences respectively to fractional frequency offset estimation and integer times frequency offset estimation)

NRZI仿真程序,可以直接生成波形~使用M文件(NRZI simulation procedures can be directly used to generate waveforms ~ M documents)

说明：  该文档提供ASK,BPSK,QPSK,4QAM,16QAM等多种调制格式的LMS时域均衡算法，最初结构由MathWorks提供。(This document provides LMS time domain equalization algorithms in ASK, BPSK, QPSK, 4QAM, 16QAM and other modulation formats. The original structure is provided by MathWorks.)