Carrier-phase synchronization can be approached in a general manner by estimating the multiplicative distortion (MD) to which a baseband received signal in an RF or coherent optical transmission system is subjected. This paper presents a unified modeling and estimation of the MD in finite-alphabet digital communication systems. A simple form of MD is the camer phase exp GO) which has to be estimated and compensated for in a coherent receiver. A more general case with fading must, however, allow for amplitude as well as phase variations of the MD. We assume a state-variable model for the MD and generally obtain a nonlinear estimation problem with additional randomly-varying system parameters such as received signal power, frequency offset, and Doppler spread. An extended Kalman filter is then applied as a near-optimal solution to the adaptive MD and channel parameter estimation problem. Examples are given to show the use and some advantages of this scheme.
标签： synchronization Carrier-phase multiplicativ approached
上传时间： 2013-11-28
上传用户：windwolf2000
蠕虫mydoom.a版本的完整源代码，mydoom为internet上传播很广的蠕虫，以传播能力强而闻名于世，蠕虫为c语言编写，很有借鉴意义。-worm version of the complete source code, mydoom internet for a wide spread of the worm to spread the renowned
上传时间： 2013-12-12
上传用户：zhoujunzhen
ocx 代码，C++编写`DEFLATE Compressed Data Format Specification available in ftp://ds.internic.net/rfc/rfc1951.txt
上传时间： 2016-01-15
上传用户：myworkpost
针对多DSP 共享总线的通用信号处理板卡, 介绍了基于PCI9054 和CPCI 总线的接口设计, 分析了通用WDM总线驱动程序的开发。采用Verilog HDL 用CPLD 设计控制时序实现了DSP 和 CPCI 总线桥接器PCI9054 之间的普通传输和高速DMA 传输。驱动程序采用DriverWorks 和Windows 驱动开发包DDK 进行开发, 具有很好的通用性和可移植性。
上传时间： 2013-12-24
上传用户：tedo811
Data_Structures_and_Algorithms - These notes accompany Data Structures and Algorithms II. The course, to a large extent, follows on from Data Structures and Algorithms I. However, while DS&A I focused on fundamental datastructures, DS&A II will focus on practical algorithms, applicable to a wide range of tasks. The approach will be somewhat less formal, with a little more focus on applications.
标签： Data_Structures_and_Algorithms Algorithms Structures accompany
上传时间： 2016-05-08
上传用户：阿四AIR
GBA躲壁球游戏，可以运行在VisualHAM 开发软件下，也可以通过mmc卡直接运行在Nintendo DS
标签： GBA
上传时间： 2016-05-09
上传用户：变形金刚
直接序列扩频Matlab程序 直接序列扩频通信可以有效地抵抗来自信道中的窄带干扰。在一个直扩通信系统中,扩频是通过伪噪声序列(PN)对发送的信息数据进行调制来实现的。在接收端,原伪噪声序列和所收信号的相关运算可将窄带干扰扩展到DS信号的整个频带,使干扰等效为幅度较低频谱较平坦的噪声；同时，将DS信号解扩,恢复原始信息数据。
上传时间： 2013-12-20
上传用户：franktu
自主开发的文件系统，自由协议 调用 mov ax,600 mov [7e20h],ax mov al, A mov [7f00h],al mov al,0 文件名以数字0结束 mov [7f01h,al 本例中文件数据位于内存 0000:2000h mov ax,cs mov ds,ax mov ax,7600h jmp ax
标签： 文件系统
上传时间： 2013-12-17
上传用户：qiao8960
功能:时钟DS1302的读写 hd7279显示显示分 小时 说明： (1)每次上电时，必须把秒寄存器高位设置为0，时钟才能走时 (2)如果每次需要写入数据和时钟日历信息，须将"写保护"寄存器设置成为0 (3)P0低4位接段码，高4位接位选，从DS1302中读出来的是BCD码 (4)TS=1010,DS=01,RS=01(在Vcc1与Vcc2之间接2K电阻) (5)初始时间设置为05年 6月 10日 星期1 8:
上传时间： 2016-06-16
上传用户：三人用菜
Detecting Network Intrusions via Sampling_A Game Theoretic Approach Internet Quarantine_Requirements for Containing Self-Propagating Code Modeling Malware Spreading Dynamics Modeling the Spread of Active Worms
标签： Quarantine_Requireme Intrusions Sampling_A Detecting
上传时间： 2013-11-30
上传用户：xc216
