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(hù)：windwolf2000
This paper investigates the design of joint frequency offset and carrier phase estimation of a multi-frequency time division multiple access (MF-TDMA) demodulator that is applied to a digital video broadcasting—return channel system via satellite (DVB-RCS). The proposed joint estimation algorithm is based on the interpolation technique for two correlation values in the frequency and phase domains. This simple interpolation technique can significantly improve frequency and phase resolution capabilities of the proposed technique without increasing the number of the correlation values. In addition, the overall block diagram of a digital communications receiver for DVB-RCS is presented, which was designed using the proposed estimation algorithms. Index Terms—Carrier phase estimation, DVB-RCS, frequency offset estimation, interpolation, joint estimation, MF-TDMA.
標(biāo)簽： investigates estimation frequency carrier
上傳時(shí)間： 2015-12-30
上傳用戶(hù)：ls530720646
Flash Low Level Driver Code，can read/write all flash memory
標(biāo)簽： Driver Flash Level Code
上傳時(shí)間： 2014-01-24
上傳用戶(hù)：libenshu01
Flash MLC Low Level Driver Source Code
標(biāo)簽： Driver Source Flash Level
上傳時(shí)間： 2013-12-03
上傳用戶(hù)：曹云鵬
Flash 8-bit width memory Low Level Driver Code
標(biāo)簽： Driver memory Flash Level
上傳時(shí)間： 2016-01-01
上傳用戶(hù)：lunshaomo
flash 16-bit width memory low level driver source code
標(biāo)簽： driver memory source flash
上傳時(shí)間： 2014-01-03
上傳用戶(hù)：gyq
An unsatisfactory property of particle filters is that they may become inefficient when the observation noise is low. In this paper we consider a simple-to-implement particle filter, called ‘LIS-based particle filter’, whose aim is to overcome the above mentioned weakness. LIS-based particle filters sample the particles in a two-stage process that uses information of the most recent observation, too. Experiments with the standard bearings-only tracking problem indicate that the proposed new particle filter method is indeed a viable alternative to other methods.
標(biāo)簽： unsatisfactory inefficient property particle
上傳時(shí)間： 2014-01-11
上傳用戶(hù)：大三三
This document contains a specification for a new low pin count bus interface, dubbed LPC, that will be added to future Intel chip-sets. The target audience for this document are system and component designers.
標(biāo)簽： specification interface document contains
上傳時(shí)間： 2013-12-22
上傳用戶(hù)：waizhang
Ecma-269：Services for CSTA Phase III
標(biāo)簽： Services Phase Ecma CSTA
上傳時(shí)間： 2016-01-09
上傳用戶(hù)：LouieWu
Ecma-323：XML Protocol for CSTA Phase
標(biāo)簽： Protocol Phase Ecma CSTA
上傳時(shí)間： 2014-01-14
上傳用戶(hù)：liglechongchong
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