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.
标签： investigates estimation frequency carrier
上传时间： 2015-12-30
上传用户：ls530720646
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.
标签： Particle Filters Rao-Blackwellised exploit
上传时间： 2016-01-02
上传用户：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.
标签： monitoring sequential industria accurate
上传时间： 2013-12-17
上传用户：familiarsmile
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
标签： Hammerhead2 web designed testing
上传时间： 2016-01-04
上传用户：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.
标签： input-output the generated following
上传时间： 2014-01-05
上传用户：royzhangsz
一个简单实用的开源C++消息中间件SAFMQ - [软件开发] - [开源 消息中间件 SAFMQ ] 2006-11-23 在很多网络应用中，尤其那些服务器有时不在线的应用中，将客户端的数据变更按照产生顺序同步到服务器的操作是比较复杂的。为了解决这种问题，可以采用消息中间件产品（例如Windows的MSMQ还有IBM的MQ），但是这种产品比较庞大而且花费不少，对于小规模应用而言没有必要。 SAFMQ（全称为Store and Forward Message Queue）是一个简单的消息中间件，采用C++编写，采用Apache授权机制。截至2006年11月SAFMQ的的版本为0.5.2，发布于2006年9月。目前版本具有如下的功能： 1. 提供多队列、多优先级的消息转发服务。 2. 支持文本、二进制的消息类型。 3. 支持转发功能，即多个消息中间件之间的消息转发。 4. 支持事务操作 5. 支持Java、PHP客户端 6. 支持SSL加密 7. 支持用户权限 8. 支持对消息的标记 9. 支持TTL(Time To Live)时间戳
上传时间： 2013-12-06
上传用户：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.
标签： CONTROLLER TRAFFIC LIGHT using
上传时间： 2013-12-27
上传用户：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
标签： demonstration reordering the columns
上传时间： 2016-01-14
上传用户：奇奇奔奔
With this foundation, you explore a development model that addresses the complete range of issues in the design of embedded communications software, including real-time operating systems, hardware and software partitioning, layering, and protocol stacks.
标签： development foundation addresses complete
上传时间： 2016-01-16
上传用户：zyt
This section describes the eSOAP toolkit demo package. It consists of the eSOAP runtime for MS Windows, the demo version of the esoapcg compiler and some source code examples to help developers learning how to use the toolkit ( run-time ) and how to specify service interfaces using the esoap code generator (esaopcg).
标签： eSOAP describes the consists
上传时间： 2013-12-26
上传用户：aig85
