wavelets are used extensively in signal and image processing,Medicine, Finance, Radar, Sonar, Geology
and many other varied fields. They are usually presented in mathematical formulae, but can actually be
understood in terms of simple comparisons with your data.
This book systematically introduced the Standard C Library and the C++
library, C++ Standard Template Library.The features are presented both
in alphabetic order and by category.
A system simulation environment in Matlab/Simulink of RFID is constructed in this paper.
Special attention is emphasized on the analog/RF circuit.Negative effects are concerned in the system
model,such as phase noise of the local oscillator,TX-RX coupling,reflection of the environment,
AWGN noise,DC offset,I/Q mismatch,etc.Performance of the whole system can be evaluated by
changing the coding method,parameters of building blocks,and operation distance.Finally,some
simulation results are presented in this paper.
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.
A new cable fault location method based on
wavelet reconstruction is proposed. In this method the
difference between the currents of faulty phase and sound
phase under the high voltage pulse excitation is used as the
measured signal and is decomposed in multi-scale by wavelet
transform, then reconstructed in single scale. Comparing with
traditional fault location method by travelling wave, the
presented method will not be interfered by the reflected wave
from the branch joint of cables or from other positions where
the impedances are not matched and not be influenced by fault
types, otherwise, the reflected waves can be recognized even
the faulty position is near to the measuring terminal, at the
same time, the influence of the wave speed uncertainty can be
reduced. The correctness of the proposed method is proved by
simulation results.
ASP開發指南,里面的西很不錯的喲.This book is for anyone who wants to learn about using .NET for web interface design. Beginner or
hobbyist .NET developers can certainly get a good foundation of .NET web interface design by going
through this book from cover to cover. However, more seasoned .NET professionals, especially if they
tend to steer away from the GUI of their projects, can also pick up a thing or two by focusing on certain
chapters that appeal to them. This book is meant to take a reader from the beginning of a project to the
completion of the interface design. Along the way, concepts are illustrated to show how the different
pieces play together. So, anyone who really wants to understand the concepts presented in this book will
be able to do so by reading the entire thing. However, this book should also serve as a good reference
after you have read it or, in some cases, in place of reading it.
Summary
Many control applications require converting some analog input to a digital format. The ADCINC12 User
Module is a general-purpose, 12-bit analog to digital converter (ADC) that does just that. This Application
Note is meant to be a simple introduction into its operation. The steps required to define, place, and write
software are presented. Examples are developed in both assembly and C.
To fully utilize the available spectrum for a wireless communication
system it is feasible to adapt to different situations
on the channel. In this paper a flexible OFDM
transmitter is presented together with basic theory behind
OFDM transmission. It is shown that high flexibility can
be obtained with a reasonable amount
Flexible baseband transmitter for OFDM
of additional hardware.
Part of the design, the FFT-processor, has already
been fabricated and measurement results are presented.
