LTE-FDD 飞蜂窝下行链路仿真器

此程序为非二进制LDPC 码的仿真程序. 信道为AWGN, 调制方式 是BPSK.-This program is used to simulation nonbinary LDPC codes over AWGN channel and BPSK modulation. The decoding algorithm is in the probability domain and with the fast Hadamard transform in the check node.

dsp application and program methodology to evaluate and pratice dsp code

压缩包中为usb通讯协议介绍，包括usb协议框架，数据流模型介绍和一些关于usb通信的名词解释等！-Compressed package for usb communication protocols, including the framework agreement usb, data flow model and introduce some terminology to explain usb communications, etc.!

vc网络视频电话系统,经过测试，稳定性有时会有问题，但通话质量相当好，而且可用于无线网络，欢迎大家测试！-vc network video phone system, tested, stability sometimes, but the call quality is very good, but can be used for wireless network, we welcome testing.

Description: This M-file plots the truncated Fourier Series representation of a square wave as well as its amplitude and phase spectrum.- Description: This M-file plots the truncated Fourier Series representation of a square wave as well as its amplitude and phase spectrum.

C# Serial port control ten bar (arduino i/o board)

delphi7的无线通信

软交换系统 用于软交换编码 软交换系统 用于软交换编码软交换 系统 用于软交换编码-soft switching system for the exchange of soft coding system for the exchange of soft soft soft coding exchange exchange exchange system for soft coding Soft switching system for the exchange of soft coding

应用背景以太网交换机所使用的以太网控制专用芯片多具有SMI接口,以实现对芯片的控制。考虑到以太网交换机的节能趋势,使用ARM芯片s3c2440作为以太网专用芯片的主控器件,使用软硬结合的方法,设计并实现了单片机系统与SMI接口的通信,介绍了SMI接口的特征和时序,并以以太网控制芯片88E6097为例,给出了在ARM芯片s3c2440上用I/O实现SMI接口的硬件电路和相关程序。关键技术基于c语言的SMI接口模拟，88E6097交换芯片的寄存器读写访问，88E6097芯片VLAN技术。采用ARM芯片s3c2440基于Linux的操作系统，通过c语言编程模拟SMI接口，对88E6097交换芯片的寄存器进行读取、写等操作，以达到对88E6097交换芯片基于802.1Q的VLAN配置。

周立功 深入浅出ARM7－LPC213x(下)-Week Ligong easy ARM7-LPC213x (under)