... limiters; nonlinear filtering; peakedness interchannel interference; nonlinear Introduction Nowadays, it is becoming more and more common that multiple digital communication devices, including wireless, ... Competing interests The author declares that he has no competing interests References [1] K Slattery, H Skinner, Platform Interference in Wireless Systems (Elsevier, Amsterdam, 2008) [2] F Leferink, ... filters in the channels, the main term of the total instantaneous power of in- phase and quadrature components resulting from such out-of-band emissions may appear as a pulse train consisting of a linear...
Ngày tải lên: 18/06/2014, 22:20
... domain signal traces for the setup shown in Figure The modulating signal is shown in the lower panel, and the observed instantaneous power in the receiver shown in the upper panel Nikitin EURASIP ... in- phase and quadrature components resulting from such out-of-band emissions may appear as a pulse train consisting of a linear combination of pulses originating at discrete times and shaped as the ... us reexamine the time domain traces of the illustrative measurement outlined in Figure In Figure 3, these traces are expanded to include the first two time derivatives of the modulating signal...
Ngày tải lên: 20/06/2014, 21:20
measuring risk in complex stochastic systems - j. franke, w. hardle, g. stahl
... global financial processing, an auditor will try to evaluate internal risk management models in detail, a mathematician may be interested in analysing the involved nonlinearities or concentrate ... importance for valuation of contingent claims and, in case of interest rate models, for bond pricing, since the pricing formulae crucially depend on the volatility Since, in general, the long-term ... GARCH(1,1)-innovations Each experiment consisted of generating a series of length 3000 (with coefficients in line with coefficients obtained performing the corresponding ARIMA (-GARCH) for the series used in...
Ngày tải lên: 08/04/2014, 12:22
Báo cáo hóa học: " Research Article Signal Processing by Generalized Receiver in DS-CDMA Wireless Communication Systems with Optimal Combining and Partial Cancellation" docx
... processing gain N and the number of users K under multipath fading channel model in DS-CDMA system employing GR Finally, simulation results are given in Section 5, and some conclusions are made in ... EURASIP Journal on Advances in Signal Processing [6] M Z Win and J H Winters, “Analysis of hybrid selection/ maximal-ratio combining in Rayleigh fading,” IEEE Transactions on Communications, vol 47, ... better understanding (17), we recall the main functioning principles of GR The simple model of GR in form of block diagram is represented in Figure In this model, we use the following notations:...
Ngày tải lên: 21/06/2014, 05:20
Báo cáo hóa học: " Research Article Intelligent Modified Channel and Frequency Offset Estimation Schemes in Future Generation OFDM-Based Packet Communication Systems" ppt
... earlier, PLCP includes 10 identical short training symbols and two long training symbols that are shown in Figure Each short training symbol consists of 16 samples while long training symbol consists ... partial short preamble information (3 short training symbols) and full long training symbols with adjustable intelligent long-to-short training symbol power ratio (LSPR) In the simulation result ... symbols are inserted to 64 point inverse fast Fourier transform (IFFT) for making subcarrier modulated OFDM symbols, cyclic prefix (guard interval) is added In the IFFT input part, remaining 12 subcarriers...
Ngày tải lên: 21/06/2014, 23:20
communication systems an introduction to signals and noise in electrical communication
... COMMUNICATION SYSTEMS An Introduction to Signals and Noise in Electrical Communication - - - FOURTH EDITION A Bruce Carlson Rensselaer Polytechnic Institute Paul B Crilly ... Bogota Caracas KualaLumpur Lisbon London Madrid MexicoCity Milan Montreal New Delhi Santiago Seoul Singapore Sydney Taipei Toronto ...
Ngày tải lên: 03/07/2014, 21:09
Optical performance monitoring in high speed optical communication systems
... implemented in networks Thus, in this thesis, we will firstly investigate the method using analog signal processing for single OSNR monitoring, which is the most important function in OPM system In practical ... suspected failure point for testing and diagnosis, while the real-time monitoring module would operate persistent listening in switching center Thus, the integratability of the monitoring system and the ... employed to investigate the proposed OSNR monitoring method In chapter 4, single channel sampling technique is proposed for OSNR monitoring and CD monitoring Single channel sampling scheme is...
Ngày tải lên: 09/09/2015, 08:17
Study on advanced modulation formats in coherent optical communication systems
... Multiplexing - XV - Study on Advanced Modulation Formats in Coherent Optical Communication Systems Chapter Introduction 1.1 Background Optical communication systems refer to communication systems ... Coding method must be taken into account in the derivation of BER Here, Gray coding is used in the bit mapping as shown in figure 2.4 The purpose of using Gray code is to minimize the number of bit ... and nonlinearity by using digital signal processing (DSP) algorithms [17-24] Because of many advantages of employing high-speed ADCs, nowadays, the motivations in coherent communication systems...
Ngày tải lên: 09/09/2015, 10:15
Advanced measurement techniques in optical fiber sensor and communication systems
... main monitoring parameters in the optical communication system are CD, PMD, nonlinearities and optical signal-to-noise ratio (OSNR) In this thesis, CD monitoring techniques will be introduced in ... to 1000 Hz After introducing the measurement techniques in fiber optic sensor systems, measurement techniques in optical communication system is also introduced, especially in chromatic dispersion ... optical communication In the specific area of measurement technology of optical fiber sensor and communication systems, great demands are needed in the market For example, in optical communication systems,...
Ngày tải lên: 10/09/2015, 08:41
Co existence of wireless communication systems in ISM bands an analytical study
... explained after understanding the regular Continuous Phase Frequency Shift Keying (CPFSK) In a memoryless FSK system, abrupt switching from one frequency to another in successive signaling intervals ... IEEE 802.11b systems are introduced Then the performance of these modulations in the two systems is evaluated under AWGN, fading channel and interference following the introduction 2.1 Indoor Channel ... use of signals having large spectral side lobes, the information-bearing signal modulates a single carrier in phase whose frequency is changed in a continuous manner The resulting frequency-modulated...
Ngày tải lên: 12/09/2015, 10:21
Mobile Communication System Evolution
... The CN domain is further sub-divided into the serving network domain, the home network domain and the transit network domain The serving network domain provides the access network domain with a ... routing calls and transporting user data from source to destination The home network domain contains user specific data The service network domain interacts with the home network domain when setting ... continued to evolve and remains one of the most widely used systems in the world Although market penetration did not reach Europe, at least in its unmodified form, it remains a dominant standard in...
Ngày tải lên: 14/09/2012, 11:26
Mobile Communication System Evolution
... On-Board Processing Operations Control Centre Operation, Maintenance and Administration Part On-Off Keying Originating Point Code Offset QPSK Open Systems Interconnection Operation Subsystem Orbitography ... Satellite Organisation Integrated Satellite-UMTS Real Environment Demonstrator Inter-Orbit Link Indian Ocean Region Internet Protocol Interim Standard International Switching Centre Integrated Services ... Digital Network Inter-Satellite Link Information Society Technologies ISDN User Part International Telecommunications Union Interworking Unit Julian Date Japanese Digital Cellular system Location...
Ngày tải lên: 14/09/2012, 11:26
2595416-The-Fast-Forward-MBA-in-Business-Communication
... Vicker, Ron Hein - "The Fast Forward MBA in Business Communication" Supply-Chain Linkages in Nonmanufacturing Environments Supply-chain-like linkage problems are also inherent in service organizations ... cover the individual writing process in detail in Part 2, including the following topics: • Writing and editing processes • Organizing the logic and structure of your document • Developing the ... with internal and external change This includes changes in business communication strategies and requirements What Is Driving Changes in Business Communication? The need for improved business communication...
Ngày tải lên: 07/02/2013, 09:32
Control of Membrane Fouling by Coagulant and Coagulant Aid Addition in Membrane Bioreactor Systems
... washing, was obtained in R5 while in other cases it was less than day This result suggested that adding polysilicate and Fe(III) mixture would bring better effect to mitigate membrane fouling ... worked more effectively on protein and carbohydrate removal The removal amount increased according to the 206 increase in Fe(III) concentrations Particularly, the protein concentrations decreased ... can be seen that the fouling frequency found in the three MBR systems were almost similar during the 35 days of operation Moreover, the mean periods per one washing in R1, R2, and R3 were 1.0...
Ngày tải lên: 05/09/2013, 10:15
Hybrid energy system evaluation in water supply system energy production: neural network approach
... the electricity supply infrastructure [1] The concern with the consumption of energy in water supply systems is increasingly inducing the managers of these systems in seeking optimal solutions ... department coordinator and vicecoordinator of post-graduation program in hydraulic engineer and sanitation Dr Reis has large experience in civil engineering with emphasis in Hydraulics, acting mainly at ... power the system for pumping or turbine the flow between reservoirs, and to sell surplus energy [6] An example of a hybrid energy network, integrated in water supply system is drinking system composed...
Ngày tải lên: 05/09/2013, 14:58
Adding Swap File Space in a Linux System
... Adding a swap file To add swap space on a system, add a swap file by using the following steps: Create a file that is equal in size to the swap file that is going to be created Do this by using ... following command at the shell prompt: dd if=/dev/zero of=swap.swp bs=1024 count=131072 The swap.swp file that was created will need to be initialized When it is initialized, the Linux system ... To make this swap file inactive, use the swapoff command in place of the swapon command Enter the following command at the shell prompt: swapon /root/swap.swp or type /sbin/swapon /root/swap.swp...
Ngày tải lên: 16/10/2013, 21:15
Inclusion of new types in relational database systems
... an installation wants at the time the DBMS is installed In this case, all routines could be linked into the run time system at system installation time by the linker provided by the operating system ... described in [ONG84] Our initial experience with the system is that dynamic linking is not preferable to static linking One problem is that initial loading of routines is slow Also, the ADT routines ... number of index keys in an index number of pages in the index the constant appearing in: rel-name.field-name OPR value the maximum value in the key range if known the minimum value in the key...
Ngày tải lên: 22/10/2013, 10:15
Tài liệu Leadership & success In relationships & Communication doc
... Relationships and communication is most interesting and intriguing Think about it Everything we is defined by how we interact with others, while the topic of communication includes everything from individuals ... photo: “At the Top”, DreamPoint Ranch, OK taken by Richard Garlington Printed in United States of America First printing by Fidlar Doubleday, January 2005 Second printing by Fidlar Doubleday, January ... optimizing the performance within a group that may be global Think about it Our culture is defined by how we interact with others, while the topic of organizations includes everything from businesses...
Ngày tải lên: 11/12/2013, 15:15