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：ls530720646
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(biāo)簽： sequential simulation posterior overview
上傳時(shí)間： 2015-12-31
上傳用戶：225588
Rao-Blackwellised Particle Filters (RBPFs) are a class of Particle Filters (PFs) that exploit conditional dependencies between parts of the state to estimate. By doing so, RBPFs can improve the estimation quality while also reducing the overall computational load in comparison to original PFs. However, the computational complexity is still too high for many real-time applications. In this paper, we propose a modified RBPF that requires a single Kalman Filter (KF) iteration per input sample. Comparative experiments show that while good convergence can still be obtained, computational efficiency is always drastically increased, making this algorithm an option to consider for real-time implementations.
標(biāo)簽： Particle Filters Rao-Blackwellised exploit
上傳時(shí)間： 2016-01-02
上傳用戶：refent
The need for accurate monitoring and analysis of sequential data arises in many scientic, industrial and nancial problems. Although the Kalman lter is effective in the linear-Gaussian case, new methods of dealing with sequential data are required with non-standard models. Recently, there has been renewed interest in simulation-based techniques. The basic idea behind these techniques is that the current state of knowledge is encapsulated in a representative sample from the appropriate posterior distribution. As time goes on, the sample evolves and adapts recursively in accordance with newly acquired data. We give a critical review of recent developments, by reference to oil well monitoring, ion channel monitoring and tracking problems, and propose some alternative algorithms that avoid the weaknesses of the current methods.
標(biāo)簽： monitoring sequential industria accurate
上傳時(shí)間： 2013-12-17
上傳用戶：familiarsmile
This book is an in-depth exploration into eVB s inherent features, and how to use them to solve likely mobile application programming tasks. After reading the book the reader will be able to write applications tackling a wide array of business problems for Windows CE-powered devices, both customized and for PocketPC and Handheld PC products. This book will help ease the transition into the language, and provide a reference for even more experienced developers.
標(biāo)簽： exploration in-depth features inherent
上傳時(shí)間： 2013-12-12
上傳用戶：aa54
Hammerhead2 is a stress testing tool designed to test out your web server and web site. It can initiate multiple connections from IP aliases and simulated numerous (256+) users at any given time
標(biāo)簽： Hammerhead2 web designed testing
上傳時(shí)間： 2016-01-04
上傳用戶：youlongjian0
To estimate the input-output mapping with inputs x ％ and outputs y generated by the following nonlinear, ％ nonstationary state space model: ％ x(t+1) = 0.5x(t) + [25x(t)]/[(1+x(t))^(2)] ％ + 8cos(1.2t) + process noise ％ y(t) = x(t)^(2) / 20 + 6 squareWave(0.05(t-1)) + 3 ％ + time varying measurement noise ％ using a multi-layer perceptron (MLP) and both the EKF and ％ the hybrid importance-samping resampling (SIR) algorithm.
標(biāo)簽： input-output the generated following
上傳時(shí)間： 2014-01-05
上傳用戶：royzhangsz
一個(gè)簡(jiǎn)單實(shí)用的開(kāi)源C++消息中間件SAFMQ - [軟件開(kāi)發(fā)] - [開(kāi)源 消息中間件 SAFMQ ] 2006-11-23 在很多網(wǎng)絡(luò)應(yīng)用中，尤其那些服務(wù)器有時(shí)不在線的應(yīng)用中，將客戶端的數(shù)據(jù)變更按照產(chǎn)生順序同步到服務(wù)器的操作是比較復(fù)雜的。為了解決這種問(wèn)題，可以采用消息中間件產(chǎn)品（例如Windows的MSMQ還有IBM的MQ），但是這種產(chǎn)品比較龐大而且花費(fèi)不少，對(duì)于小規(guī)模應(yīng)用而言沒(méi)有必要。 SAFMQ（全稱為Store and Forward Message Queue）是一個(gè)簡(jiǎn)單的消息中間件，采用C++編寫，采用Apache授權(quán)機(jī)制。截至2006年11月SAFMQ的的版本為0.5.2，發(fā)布于2006年9月。目前版本具有如下的功能： 1. 提供多隊(duì)列、多優(yōu)先級(jí)的消息轉(zhuǎn)發(fā)服務(wù)。 2. 支持文本、二進(jìn)制的消息類型。 3. 支持轉(zhuǎn)發(fā)功能，即多個(gè)消息中間件之間的消息轉(zhuǎn)發(fā)。 4. 支持事務(wù)操作 5. 支持Java、PHP客戶端 6. 支持SSL加密 7. 支持用戶權(quán)限 8. 支持對(duì)消息的標(biāo)記 9. 支持TTL(Time To Live)時(shí)間戳
標(biāo)簽： SAFMQ 2006 開(kāi)源 11
上傳時(shí)間： 2013-12-06
上傳用戶：alan-ee
TRAFFIC LIGHT CONTROLLER using C51 and RTX-51 tiny，This program is a simple Traffic Light Controller. Between start time and end time the system controls a traffic light with pedestrian self-service. Outside of this time range the yellow caution lamp is blinking.
標(biāo)簽： CONTROLLER TRAFFIC LIGHT using
上傳時(shí)間： 2013-12-27
上傳用戶：123456wh
This demonstration shows that reordering the rows and columns of a sparse matrix S can affect the time and storage required for a matrix operation such as factoring S into its Cholesky decomposition
標(biāo)簽： demonstration reordering the columns
上傳時(shí)間： 2016-01-14
上傳用戶：奇奇奔奔
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