2.9零均值高斯白噪声通过低通带通滤波器前后特性

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.

说明：  此代码为4ASK发送调制与接收解调的通信系统，为主要代码(Communication system of 4ask transmitting modulation and receiving demodulation)

利用MATLAB/Simulink建立直线电机模型(Using MATLAB/Simulink to establish a linear motor model)

说明：  qpsk基带调制和解调matlab程序，包括gardner位同步(qpsk modulate and demodulate in baseband use matlab code,including gardner time synchronization)

manual leica geooffice

stm32f4xx 官方标准外设固件库 ，含有多种类型的设计案例(Stm32f4xx official standard peripheral firmware library, containing a variety of design cases)

Asynchronous Transfer Mode (ATM) is a connection-oriented, packet-switched technology. The packets that are switched in an ATM network are of a fixed length, 53 bytes, and are called cells. The cell size has a particular effect on carrying voice traffic effectively. The ATM Adaptation Layer (AAL) sits between ATM and the variable-length packet protocols that might use ATM, such as IP.

源信号数目的估计在阵列信号处理中有很广的研究了，这个源程序是基于新一代通信环境下的源信号数目估计，如mimo——ofdm(detection the number of source signals for MIMO_OFDM)

本程序中，具有多种MIMO信号检测算法，用以比较，选取较优性能用以系统(In this program, a variety of MIMO signal detection algorithms are used to compare, select the better performance to use the system.)

单脉冲测角完整各种资料,十分的齐全，写的都还很详细，有利于的对测角算法的理解(Single pulse to calculate angle )