real time operating system applications examples
Real-Time Digital Signal Processing - Chapter 7: Fast Fourier Transform and Its Applications
Ngày tải lên :
28/10/2013, 05:15
... input sequence is very long compared to the order of FIR
filter L. This is especially true in real- time applications where the input sequence is of
infinite duration. In order to use the efficient ... algorithm.
There are two classes of FFT algorithms: decimation-in -time and decimation-in-
frequency. In the decimation-in -time algorithm, the input time sequence is successively
divided up into smaller sequences, ... samples of
data.
The execution time of the fft function depends on the input data type and the
sequence length. If the input data is real- valued, it computes a real power-of-two FFT
algorithm...
- 47
- 634
- 0
Real-Time Digital Signal Processing - Chapter 9: Practical DSP Applications in Communications
Ngày tải lên :
06/11/2013, 18:15
... of
communication systems. In this chapter, we will introduce some selected DSP applica-
tions in communications that played an important role in the realization of the systems.
9.1 Sinewave Generators and Applications
When ... tab_0_PI
.sect "cos_sin"
SINEWAVE GENERATORS AND APPLICATIONS
401
9
Practical DSP Applications in
Communications
There are many DSP applications that are used in our daily lives, some of ... wireless communica-
tion system is illustrated in Figure 9.22. The system can be divided into three sections:
transmitter, receiver, and the communication channel. The system can also be distin-
guished...
- 45
- 575
- 0
Tài liệu Real-Time Digital Signal Processing - Appendix B: Introduction of MATLAB for DSP Applications docx
Ngày tải lên :
25/01/2014, 19:20
... discrete -time linear time- invariant system. Let x(n) be the input
sequence and y(n) be the output sequence of the system. If h(n) is the impulse response
of the system, the output signal of the system ... xn);
title( `Time- domain signal x(n)');
xlabel( `Time index');
ylabel(`Amplitude');
where title gives the plot with the title `Time- domain signal x(n)', xlabel labels the
x-axis with `Time ... FOR DSP APPLICATIONS
Appendix B
Introduction of MATLAB for
DSP Applications
MATLAB (MATrix LABoratory) is an interactive technical computing environment
for scientific and engineering applications. ...
- 15
- 606
- 0
Tài liệu Real-Time Digital Signal Processing - Appendix C: Introduction of C Programming for DSP Applications ppt
Ngày tải lên :
25/01/2014, 19:20
... DSP run -time environment, and the host environment. In this section, we
will present the data types that are used by the TMS320C55x C compiler.
The C55x is designed for real- time DSP applications. ... typing
firfltr infile coefile outfile <enter>
The operating system passes the strings on the command line to main. More precisely,
the operating system stores the strings on the command line in ... for different data types may vary
from system to system. For example, in a workstation, the value of sizeof(int)is 4
(bytes), whereas on fixed-point DSP systems, the value of sizeof(int)is typically...
- 18
- 505
- 0
Event Order Abstraction for Parametric Real-Time System Verification pptx
Ngày tải lên :
07/03/2014, 17:20
... model certain class of real- time systems like a biphase mark protocol
[31].
The Alur-Dill timed automata framework [1] is arguably the best known framework to model a real- time
system, and is the ... exclusion algorithm.
1 Introduction
In a typical real- time system, timing constraints on the system s behavior are used to ensure its correctness. Such
a system is often modeled by using a set of timing ... parametric safety verification of
real- time systems in which “correct orderings of events” needed for system correctness are maintained by timing
constraints on the systems’ behavior. By using EOA,...
- 21
- 390
- 0
Báo cáo khoa học: "A System for Real-time Twitter Sentiment Analysis of 2012 U.S" pdf
Ngày tải lên :
16/03/2014, 20:20
... infrastructure and
sentiment model to analyze in real- time public
sentiment on Twitter toward the 2012 U.S.
presidential candidates. Our effort to gauge
political sentiment is based on bringing ... visualization modules
and assemble them into a real- time processing
pipeline. Streams applications are highly scalable
so we can adjust our system to handle higher
volume of data by adding ... desirable.
Figure 1 shows our system s architecture and its
modules. Next, we introduce our data source and
each individual module.
Figure 1. The system architecture for real- time processing Twitter...
- 6
- 534
- 0
3d game engine architecture - engineering real time applications with wild magic - david h eberl
Ngày tải lên :
04/06/2014, 11:53
... ordering
also supports logarithmic -time insertion and deletion. Unfortunately, real- time en-
gines sometimes have performance penalties because of the overhead of STL, both in
time and memory.
31
TeamLRN ... idle time because it is not
processing messages. The idle loop is where you need to place your rendering code in
order to obtain real- time frame rates. Trying to render at a fixed rate through a system
timer ... fixed rate through a system
timer is typically not sufficient because the timers tend to be of limited resolution. For
example, the
WM_TIMER message is generated about 18 times per second, so you...
- 754
- 371
- 0
Báo cáo hóa học: " Research Article A Speed-Adaptive Media Encryption Scheme for Real-Time Recording and Playback System" pot
Ngày tải lên :
21/06/2014, 11:20
... Admire System. As is shown in Figures
1 and 2, the Admire (ADvanced Multimedia Interactive
Real- time Environment) system [2, 6, 7] is a heterogeneous
wireless network-oriented large-scale multimedia ... media data and real- time requirements of
multimedia applications [1]. How to maintain the security
of media data becomes a challenge task [1, 8, 9]. To solve this
problem, a lot of multimedia (e.g., ... of SAME is effective enough to
support real- time applications.
The rest of the paper is org anized as follows. Section 2
presents the overview of AdmireRPS system and its security
problems. The...
- 9
- 354
- 0
Báo cáo hóa học: "Design and implementation of a real time and train less eye state recognition system" docx
Ngày tải lên :
21/06/2014, 19:20
... i.e., the total time to process the image of an eye with 136
ì
82 pixels in this
system is 136
à
s. This is a hardware implementation of an eye state recognition for real
time.
Competing ... implementation
method have a high speed and accuracy. Therefore, our proposed system can be used in
real- time applications.
Conclusion
Figure 2
platform. The accuracy of the algorithm ... drowsiness warning system based on the fuzzy
logic images analysis. Expert Syst. Appl. 34(2), 1556–1561 (2008)
13. Y Lei, M Yuan, X Song, X Liu, J Ouyang, Recognition of eye states in real time
video,...
- 28
- 447
- 0
The Duality of Memory and Communication in the Implementation of a Multiprocessor Operating System
Ngày tải lên :
12/09/2012, 15:05
... University
Pittsburgh, PA 15213
Appeared in Proceedings of the 11th Operating Systems Principles,
November, 1987
Abstract
Mach is a multiprocessor operating system being implemented at Carnegie-Mellon University. ... Collins and L.W. Loen.
System/ 38 Machine Storage Management.
IBM System/ 38 Technical Developments, IBM General Systems Division :63-66, 1978.
[7] Gupta, A.
Parallel Production Systems.
PhD thesis, ... November, 1984.
[9] Kahn, K.C. et al.
iMAX: A Multiprocessor Operating System for an Object-Based Computer.
In Proc. 8th Symposium on Operating Systems Principles, pages 127-136. ACM, December, 1981.
[10]...
- 23
- 1.3K
- 1