An adaptive Gaussian filter for noise reduction and edge detection
标签： detection reduction adaptive Gaussian
上传时间： 2014-01-08
上传用户：lunshaomo
We address the problem of blind carrier frequency-offset (CFO) estimation in quadrature amplitude modulation, phase-shift keying, and pulse amplitude modulation communications systems.We study the performance of a standard CFO estimate, which consists of first raising the received signal to the Mth power, where M is an integer depending on the type and size of the symbol constellation, and then applying the nonlinear least squares (NLLS) estimation approach. At low signal-to noise ratio (SNR), the NLLS method fails to provide an accurate CFO estimate because of the presence of outliers. In this letter, we derive an approximate closed-form expression for the outlier probability. This enables us to predict the mean-square error (MSE) on CFO estimation for all SNR values. For a given SNR, the new results also give insight into the minimum number of samples required in the CFO estimation procedure, in order to ensure that the MSE on estimation is not significantly affected by the outliers.
标签： frequency-offset estimation quadrature amplitude
上传时间： 2014-01-22
上传用户：牛布牛
Flash Low Level Driver Code，can read/write all flash memory
上传时间： 2014-01-24
上传用户：libenshu01
Flash MLC Low Level Driver Source Code
上传时间： 2013-12-03
上传用户：曹云鹏
Flash 8-bit width memory Low Level Driver Code
上传时间： 2016-01-01
上传用户：lunshaomo
flash 16-bit width memory low level driver source code
标签： driver memory source flash
上传时间： 2014-01-03
上传用户：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.
标签： unsatisfactory inefficient property particle
上传时间： 2014-01-11
上传用户：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.
标签： specification interface document contains
上传时间： 2013-12-22
上传用户：waizhang
Ideal for large low power (nanoWatt) and connectivity applications that benefit from the availability of four serial ports: double synchronous serial ports (I² C™ and SPI™ ) and double asynchronous (LIN capable) serial ports. Large amounts of RAM memory for buffering and FLASH program memory make it ideal for instrumentation panels, TCP/IP enabled embedded applications as well as metering and industrial control and monitoring applications. While operating up to 40 MHz, it is also backward software and hardware compatible with the PIC18F8720.
标签： connectivity applications availabilit nanoWatt
上传时间： 2016-02-04
上传用户：CHINA526
Designing a Low-Cost USB Mouse with the Cypress Semiconductor CY7C63000 USB Controller
标签： Semiconductor Controller Designing USB
上传时间： 2016-02-10
上传用户：亚亚娟娟123
