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.
標(biāo)簽： synchronization Carrier-phase multiplicativ approached
上傳時(shí)間： 2013-11-28
上傳用戶：windwolf2000
蠕蟲mydoom.a版本的完整源代碼，mydoom為internet上傳播很廣的蠕蟲，以傳播能力強(qiáng)而聞名于世，蠕蟲為c語言編寫，很有借鑒意義。-worm version of the complete source code, mydoom internet for a wide spread of the worm to spread the renowned
上傳時(shí)間： 2013-12-12
上傳用戶：zhoujunzhen
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
標(biāo)簽： Quarantine_Requireme Intrusions Sampling_A Detecting
上傳時(shí)間： 2013-11-30
上傳用戶：xc216
CDMA 的仿真程序，F(xiàn)requency Hopping spread Spectrum,Random frequency hopps to form a spread signal
上傳時(shí)間： 2013-12-22
上傳用戶：nanshan
NanoStack is a 6lowpan IPv6 + IEEE 802.15.4 protocol stack, enabling wireless embedded and sensor networking. The goal is to help 6lowpan spread globally and to encourage new features from the IETF and ISA100 to be implemented and tested.
標(biāo)簽： NanoStack enabling embedded protocol
上傳時(shí)間： 2014-01-21
上傳用戶：牧羊人8920
The computing world has undergone a revolution since the publication of The C Programming Language in 1978. Big computers are much bigger, and personal computers have capabilities that rival mainframes of a decade ago. During this time, C has changed too, although only modestly, and it has spread far beyond its origins as the language of the UNIX operating system
標(biāo)簽： Programming publication revolution The
上傳時(shí)間： 2017-05-16
上傳用戶：thinode
注意：剛上傳的不完整，以這個(gè)為準(zhǔn) （在DS-spread spectrum系統(tǒng)中,噪聲為加性高斯白噪聲,傳統(tǒng)單用戶檢測(cè),線性解相關(guān)多用戶檢測(cè)和最小均方誤差多用戶檢測(cè)的性能比較）
標(biāo)簽：
上傳時(shí)間： 2017-05-24
上傳用戶：陽光少年2016
擴(kuò)展頻譜通信(spread Spectrum Communication)簡(jiǎn)稱擴(kuò)頻通信，是指待傳輸?shù)男畔⒌念l譜用某個(gè)特定的擴(kuò)頻函數(shù)擴(kuò)展后成為寬頻帶信號(hào)，送入信道中傳輸，再利用相應(yīng)手段將其壓縮，從而獲取傳輸信息的通信系統(tǒng)，也就是說傳輸信息所用的帶寬遠(yuǎn)大于信息本身帶寬。
標(biāo)簽： 序列
上傳時(shí)間： 2018-04-08
上傳用戶：如果云知道
擴(kuò)展頻譜通信(spread Spectrum Communication)簡(jiǎn)稱擴(kuò)頻通信，是指待傳輸?shù)男畔⒌念l譜用某個(gè)特定的擴(kuò)頻函數(shù)擴(kuò)展后成為寬頻帶信號(hào)，送入信道中傳輸，再利用相應(yīng)手段將其壓縮，從而獲取傳輸信息的通信系統(tǒng)，也就是說傳輸信息所用的帶寬遠(yuǎn)大于信息本身帶寬。
標(biāo)簽： 擴(kuò)頻系統(tǒng)
上傳時(shí)間： 2018-04-08
上傳用戶：如果云知道
Characterizing the dynamics underlying global spread of epidemics
標(biāo)簽： Characterizing underlying epidemics dynamics global spread the of
上傳時(shí)間： 2019-04-18
上傳用戶：glstone
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