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.
標簽： investigates estimation frequency carrier
上傳時間： 2015-12-30
上傳用戶：ls530720646
Aiming at the application of passive trackinn based on sensor array, a new passive trackinn usinn sensor array based on particle filter was Proposed. Firstly, the“fake points" could be almost entirely and exactly deleted with the aids of the sensor array at the expense of an additional sensor. Secondly, considered the fact that the measurements notten from each array were independent in passive trackinn system, a novel sequential particle filter usinn sensor array with improved distribution was Proposed. At last, in a simulation study we compared this approach a壇orithm with traditional trackinn methods. The simulation re-sups show that the Proposed method can nreatly improve the state estimation precision of sensor array passive trackinn system.
標簽： trackinn passive application Aiming
上傳時間： 2015-12-31
上傳用戶：trepb001
In this article, we present an overview of methods for sequential simulation from posterior distributions. These methods are of particular interest in Bayesian filtering for discrete time dynamic models that are typically nonlinear and non-Gaussian. A general importance sampling framework is developed that unifies many of the methods which have been Proposed over the last few decades in several different scientific disciplines. Novel extensions to the existing methods are also Proposed.We showin particular how to incorporate local linearisation methods similar to those which have previously been employed in the deterministic filtering literature these lead to very effective importance distributions. Furthermore we describe a method which uses Rao-Blackwellisation in order to take advantage of the analytic structure present in some important classes of state-space models. In a final section we develop algorithms for prediction, smoothing and evaluation of the likelihood in dynamic models.
標簽： sequential simulation posterior overview
上傳時間： 2015-12-31
上傳用戶：225588
VESA Display Device Data Block (DDDB) Standard Display Device Data Block This proposal defines the Display Device Data Block (DDDB), for use in a CEA-861-compatible EDID extension, as originally Proposed in the VESA TV Compatibility White Paper (Compatibility of PC and CE Displays, Aug.1, 2005).
上傳時間： 2014-10-11
上傳用戶：wanghui2438
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.
標簽： unsatisfactory inefficient property particle
上傳時間： 2014-01-11
上傳用戶：大三三
ATA接口的詳細解讀，working draft Proposed American National Standard for Information Systems - ATA (ATAttachment) 78頁
上傳時間： 2016-03-26
上傳用戶：gxrui1991
Squaring circuits are an important building block for impulse-radio UWB non-coherent receivers. This work proposes a squarer, based on the quadratic law of saturated transistors. Such a circuit has already been Proposed for lower frequency applications, therefore this work focuses on the extension to ultra wide bandwidth, with particular care to the consequences related to the deviation from the ideal quadratic law of 0.18μm CMOS transistors.
標簽： impulse-radio non-coherent important receivers
上傳時間： 2013-12-24
上傳用戶：kikye
Abstract：This article elaborats the RFID system，multianalysised the concrete function of RFID middleware，and Proposed a kind of RFID data transmission design model with news transmission mechanism，for realizing data transmission more effectively， RFID data transmission design model with news transmission mechanism，for realizing data transmission more effectively，
標簽： elaborats Abstract article system
上傳時間： 2014-01-02
上傳用戶：yd19890720
An optimal neuron evolution algorithm for the restoration of linearly distorted images is presented in this paper. The Proposed algorithm is motivated by the symmetric positive-definite quadratic programming structure inherent in restoration. Theoretical analysis and experimental results show that the algorithm not only significantly increases the convergence rate of processing, hut also produces good restoration results. In addition, the algorithm provides a genuine parallel processing structure which ensures computationally feasible spatial domain image restoration
標簽： restoration evolution algorithm distorted
上傳時間： 2013-12-21
上傳用戶：yy541071797
Visual tracking is one of the key components for robots to accomplish a given task in a dynamic environment, especially when independently moving objects are included. This paper proposes an extension of Adaptive Visual Servoing (hereafter, AVS) for unknown moving object tracking. The method utilizes binocular stereo vision, but does not need the knowledge of camera parameters. Only one assumption is that the system need stationary references in the both images by which the system can predict the motion of unknown moving objects. The basic ideas how we extended the AVS method such that it can track unknown moving objects are given and formalized into a new AVS system. The experimental results with Proposed control architecture are shown and a discussion is given.
標簽： components accomplish tracking dynamic
上傳時間： 2013-12-11
上傳用戶：lizhen9880
