real time operating system principles ppt

... digital signal processing for high data rate communication systems. He is inter- ested in MIMO and SDMA systems and their realization in real- time applications. Lars Br ¨ uhl received the Dipl Ing. ... on future projects is presented. 2. OVERVIEW OF THE SABA REAL- TIME MIMO TESTBED The SABA (smart a ntennas for broadband access) real- time MIMO testbed is designed for one base station with an ... (SC-FDE) transmission, symbol decision is realized in the time domain; therefore, the data has to be transformed back to the time do- main. In OFDM systems, symbol decision is made in the fre- quency...

Ngày tải lên: 22/06/2014, 23:20

... network operating system. Just as a computer cannot operate without an operating system, a network of computers cannot operate without a network operating system. Every network operating system ... network operating system s manufacturer, a desktop computer’s networking software can be added either to the computer’s own operating system or be integrated with it. Network operating system ... mathematical calculation. A network operating system must also support multiple processors, clusters of disk drives, and data security features. Finally, a network operating system must be reliable and...

Ngày tải lên: 09/12/2013, 17:15

... that 12 INTRODUCTION TO REAL- TIME DIGITAL SIGNAL PROCESSING Contents Preface xv 1 Introduction to Real- Time Digital Signal Processing 1 1.1 Basic Elements of Real- Time DSP Systems 2 1.2 Input and ... INTRODUCTION TO REAL- TIME DIGITAL SIGNAL PROCESSING 1 Introduction to Real- Time Digital Signal Processing Signals can be divided into three categories ± continuous -time (analog) signals, discrete -time signals, ... identify the system& apos;s dynamic range. 1.3.3 Real- Time Constraints A limitation of DSP systems for real- time applications is that the bandwidth of the system is limited by the sampling rate. The...

Ngày tải lên: 18/01/2014, 20:20

... Accept upgrade transfer from other hosts Enabled Actions [U] System XMODEM upgrade [D] Download test subsystem (XMODEM) [T] System TFTP upgrade [X] Exit to Main Menu Enter Selection: ... and Intermediate Routing v 3.0 - Lab 6.2.7a Copyright  2003, Cisco Systems, Inc. Lab 6.2.7a Managing Switch Operating System Files Objective • Create and verify a basic switch configuration. ... An example of the Firmware Configuration Menu is: Catalyst 1900 - Firmware Configuration System Information FLASH: 1024K bytes V8.01.00 : Enterprise Edition Upgrade status: No upgrade...

Ngày tải lên: 24/01/2014, 19:20

... Access Time Static RAM (SRAM) 5-15 ns Dynamic RAM (DRAM) 50-70 ns Read only memory (ROM) 55-250 ns Hard disk drives 6-12 ms CD ROM drives 80-800 ms Tape drives 20-500 s Typical Access Times for ... two drive interface standards. This lesson includes the following sections: • Average Access Time • File Compression • Data-Transfer Rate • Drive-Interface Standards File Compression • File ... interface standards are EIDE (Enhanced Integrated Drive Electronics) and SCSI (Small Computer System Interface). • EIDE has evolved over the years and has several variants, all of which have...

Ngày tải lên: 16/02/2014, 08:20

... range of real- time capabilities, such as QoS-enabled network protocols, real- time operating system scheduling mechanisms and policies, and real- time middle- ware services, across the system domain. ... “Dy- namic integrated scheduling of hard real- time, soft real- time and non -real- time processes,” in Proceedings of the 24th IEEE International Real- Time Systems Symposium (RTSS ’03),pp. 396–407, ... across the system domain. Conventional QoS-enabled middleware technologies, such as real- time CORBA [3] and the real- time Java [4], have been used extensively as an operating platforms to build DRE systems...

Ngày tải lên: 22/06/2014, 00:20

... systems is evaluated when applied to a real- world soft real- time ap- plication. Compared to [11], our migration strategy is im- plemented at the operating system and middleware level. Checkpoints ... applied in the context of soft real- time multimedia applications. To achieve this target, we designed and implemented the proposed mid- dleware on top of uClinux operating system running on a prototype ... checkpointing and run -time support. A second set of tests were performed on a soft real- time streaming ap- plication to highlight the effect of migration on a real- life multimedia application....

Ngày tải lên: 22/06/2014, 05:20

Ngày tải lên: 28/06/2014, 17:20

Ngày tải lên: 01/07/2014, 17:20

Ngày tải lên: 01/07/2014, 17:20

Ngày tải lên: 01/07/2014, 17:20

Ngày tải lên: 01/07/2014, 17:20

Ngày tải lên: 01/07/2014, 17:20

Ngày tải lên: 01/07/2014, 17:20

Ngày tải lên: 03/07/2014, 07:20

Ngày tải lên: 28/07/2014, 04:21

Ngày tải lên: 28/07/2014, 04:21

... ©2005 Operating System Concepts – 7 th Edition, Jan 1, 2005 Chapter 19: Real Chapter 19: Real - - Time Systems Time Systems  System Characteristics  Features of Real- Time Systems  Implementing Real- Time ... of real- time systems  To distinguish between hard and soft real- time systems  To discuss the defining characteristics of real- time systems  To describe scheduling algorithms for hard real- time ... processor time. 19.11 Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7 th Edition, Jan 1, 2005 Implementing Real Implementing Real - - Time Time Operating Systems Operating Systems ...

Ngày tải lên: 28/06/2014, 02:20

... 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,...

Ngày tải lên: 07/03/2014, 17:20

... Corporation EURASIP Journal on Embedded Systems Volume 2008, Article ID 502768, 2 pages doi:10.1155/2008/502768 Editorial Operating System Support for Embedded Real- Time Applications Alfons Crespo, 1 Ismael ... is placing enormous demands on the facilities that an embed- ded operating system must provide. Embedded systems can be defined as computing systems with tightly coupled hardware and software that are ... that these systems are usually an integr al part of a larger system. We can find a large variety of applications where embed- ded systems play an important role, from small stand-alone systems,...

Ngày tải lên: 21/06/2014, 22:20