... class. 3.2 Traffic control (tc) To perform traffic control on a wireless access router, in this research we use the tc tool [11]. This too l provides an interface to the kernel that performs traffic ... is time -based fairness and throughput -based fairness as mentioned in [29]. The objective of time -based fairness is to solve the ‘performance anomaly’ of IEEE 802.11 [30], as the throughput of wireless ... analysis and solutions based on rate control. IEEE Trans. Wireless Commun. 6, 1346–1355 (2007) 10. MA Brown, Traffic Control using tcng and HTB HOWTO. http://tldp.org/ HOWTO/Traffic -Control- tcng-HTB-HOWTO/...
Ngày tải lên: 20/06/2014, 22:20
... beginning of each superframe performs synchronization, the clock drift is negligible at the slot boundaries. 4.2. Contention -Based Channel Access. The TUTWSN design allows contention -based slot access ... 1 Success Fail/skip TX succeeds? B = 0 Yes No B wait > 0 No Yes Figure 4: Contention -based channel access with ALOHA -based algorithm. a contention -based transmission attempted on the next access cycle. The number ... routing schemes are based on a highly static tree network structure, achieved performance degrades rapidly in a dynamic network [26]. In addition, the hidden node problem reduces performance in dense...
Ngày tải lên: 21/06/2014, 11:20
Báo cáo hóa học: " Research Article A Wireless Sensor Network for RF-Based Indoor Localization" pptx
Ngày tải lên: 21/06/2014, 22:20
REMOTE CONTROL AND MONITORING SYSTEM VIA SMS AND INTERNET
... model for remote region while don’t have internet, but covered by mobile network Home PC Internet Remote PC Remote Center Sensor Extended Remote Sensor1 Extended Remote Sensor2 ... website for Control and monitor devices Figure 13 Log in using the web interface 35 Table of content Abstract 2 I .Circuit block and model connection 2 1.1 Main circuit block diagram ... (center circuit) Start Yes No 5 1.3 The model connection with extended circuit using transmitter and receiver RF modules or RS232 The blocks “Extended Remote Sensor1” and “Extended Remote...
Ngày tải lên: 25/04/2013, 11:25
Tài liệu SONEPLEX DS3 REMOTE CONTROL SYSTEM doc
... for remote alarm reporting, perfor- mance monitoring, and provisioning of up to 28 DS1 circuits on a Soneplex Broadband System at the remote site. A single, centrally located DS3 Remote Control ... Number CAM-FRM0A1 CAM-DS30A2 SPX-APU0B1 SPX-FRM0A3 SPX-RCM0A1 SPX-DS30C1 21/98 409 Soneplex đ DS3 Remote Control System The Soneplex DS3 Remote Control System provides an embedded DS3 communication channel between a remote Soneplex Broadband System and ... Remote Control System Communications Channel Access Module The DS3 Communications Access Module (CAM) provides remote access, performance monitoring, alarm and maintenance capability to one remote...
Ngày tải lên: 10/12/2013, 16:15
Tài liệu Microcontroller Based Applied Digital Control pdf
... program control. The microcontroller has 8K program memory, which is quite large for control based applications. In addition, the RAM memory is 368 bytes, which again is quite large for control based ... JWBK063-Ibrahim January 4, 2006 18:11 Char Count= 0 Microcontroller Based Applied Digital Control i Microcontroller Based Applied Digital Control D. Ibrahim C 2006 John Wiley & Sons, Ltd. ... Criterion 201 8.6 Bode Diagrams 205 8.7 Exercises 208 Further Reading 211 9 Discrete Controller Design 213 9.1 Digital Controllers 214 9.1.1 Dead-Beat Controller 215 9.1.2 Dahlin Controller 217 JWBK063-01...
Ngày tải lên: 22/12/2013, 21:15
Báo cáo khoa học: "Applying Explanation-based Learning to Control and Speeding-up Natural Language Generation" potx
... book" and "Kim" would additionally be generated. 218 Applying Explanation -based Learning to Control and Speeding-up Natural Language Generation Giinter Neumann DFKI GmbH Stuhlsatzenhausweg ... subgrammars to con- trol and speeding-up natural language gen- eration NLG. The method is based on explanation -based learning EBL. The main advantage for the proposed new method for NLG is that ... known as Explanation -based Learning EBL (Mitchell, Keller, and Kedar-Cabelli, 1986; van Harmelen and Bundy, 1988; Minton et al., 1989) has successfully been applied to control and speeding-up...
Ngày tải lên: 08/03/2014, 21:20
achieving collision avoidance and fairness in csma based wireless mesh networks ppt
Ngày tải lên: 19/03/2014, 00:20
ĐIỀU KHIỂN TỪ XA CÁC THIẾT BỊ ĐIỆN QUA TIN NHẮN ĐIỆN THỌAI REMOTE CONTROL OF CIVIL ELECTRICAL DEVICES USING SMS docx
... khiển; + Chế độ tiết kiệm năng lượng (Sleep Mode); + Nạp chương trình bằng cổng nối tiếp ICSP (In -Circuit Serial Programing); + Nguồn dao động lập trình được tạo bằng công nghệ CMOS; + 1 bộ biến...
Ngày tải lên: 29/03/2014, 15:20
M4 Macros for Electric Circuit Diagrams in LATEX Document
... processing the diagram by L A T E X. Although they are not needed for many circuit diagrams, these sizes may be required explicitly for calculations or implicitly for determining the diagram bounding ... case for producing circuit diagrams is to read pstricks.m4 or pgf.m4 first when dpic is the postprocessor or to set one of these as the default configuration file. At the top of each diagram source, ... solution is to process the diagram twice. The diagram source is processed as usual by m4 and a pic processor, and the main document source is L A T E Xed to input the diagram and format the text,...
Ngày tải lên: 23/05/2014, 10:53
Báo cáo hóa học: " Accelerometer-based wireless body area network to estimate intensity of therapy in post-acute rehabilitation" pptx
... rehabilitation. Miniature, wireless, and wearable technology offers a tremendous opportu- nity to address this issue. Recent technological advances in integrated circuits and wireless communications ... order to perform mobility tests, like TUG and the 5-m walk. An asterisk (*) indicates that the patient was unable to accomplish a given test at baseline evaluation. Mean values for performance ... three wireless sensor modules, each comprised of a custom sen- sor board with an embedded three axial (3D) accelerom- eter (LIS3L02AQ, STMicroelectronics) and a communication module with a microcontroller...
Ngày tải lên: 19/06/2014, 08:20
Báo cáo hóa học: " Research Article AWPP: A New Scheme for Wireless Access Control Proportional to Traffic Priority and Rate" pdf
... access control mechanism of the emerging wireless broadband networks. Specifically, a possible integration of the AWPP resource managing engine into the respective module of the IEEE 802.16 wireless ... Exchange Between Systems—LAN/MAN Specific Requirements—part 11 Wireless Medium Access Control and Physical Layer specifications, Amendment 8: Medium Access Control Quality of Service Enhancements, 2005. [3] ... Mascolo, “Feedback -based control for providing real-time services with the 802.11e MAC,” IEEE/ACM Transactions on Networking, vol. 15, no. 2, pp. 323–333, 2007. [7] Y. P. Fallah and H. Alnuweiri, “A controlled-access...
Ngày tải lên: 21/06/2014, 05:20
báo cáo hóa học:" Research Article Secure Collision-Free Frequency Hopping for OFDMA-Based Wireless Networks" docx
... is particularly powerful in eliminating channel interference and hostile jamming interference, especially random jamming. Simulation examples are provided to illustrate the performance of the proposed ... found to be particularly powerful in eliminating channel interference and hostile jamming interference, especially random jamming. In this paper, we analyze the performance of the proposed STC- CFFH ... subcarriers that experience interference. We can see that the STC- CFFH system outperforms the other systems for all ρ<1. This example shows that STC-CFFH is very robust under jamming interference. We also...
Ngày tải lên: 21/06/2014, 20:20
Three Dimensional Integration and Modeling A Revolution in RF and Wireless Packaging by Jong Hoon Lee Emmanuil Manos M Tentzeris and Constantine A Balanis_3 ppt
... shown in Fig. 3.11. The target RFID IC was EPC Gen2 RFID ASIC IC, which has a stable impedance performance of 16-j350 Ohm over 902–928MHz, covering the North America UHF RFID Band. The substrate was ... THREE-DIMENSIONAL INTEGRATION FIGURE 3.11: Inductively coupled feeding RFID tag module configuration. First of all, the RF characteristics of the paper -based substrate have been recently studied by using the ... the ever growing interest for “cognitive intelligence” and wireless applications, such as r adio frequency identifica- tion (RFID) and wireless local area networks (WLAN). Paper has been considered...
Ngày tải lên: 21/06/2014, 22:20
Three Dimensional Integration and Modeling A Revolution in RF and Wireless Packaging by Jong Hoon Lee Emmanuil Manos M Tentzeris and Constantine A Balanis_4 docx
... the edge definition of metal traces since the simulations assume a perfect definition of metal strips. Also, the metallization surface roughness may influence the ohmic loss because the skin depth ... TheChebyshev prototype filterwas designedfor a centerfrequency of61.5GHz, 1.3 dBinser- tion loss, 0.1 dB band ripple, and 8.13% 3-dB bandwidth. The circuit parameters for this filter are: Q ext = 14.106 k 12 = ... frequency of 59.6 GHz, 1dB insertion loss, 0.1 dB in band ripple, and 6.4% fractional bandwidth based on Chebyshev low-pass prototype filter. The design parameters, such as the external quality...
Ngày tải lên: 21/06/2014, 22:20
Three Dimensional Integration and Modeling A Revolution in RF and Wireless Packaging by Jong Hoon Lee Emmanuil Manos M Tentzeris and Constantine A Balanis_5 docx
... RECTANGULAR CAVITY RESONATOR In numerous high-power microwave applications (e.g. remote sensing and radar), waveguide -based structures are commonly used due to their better power handling capability, ... sidewalls, which almost match the performance of the PECs [26,29]. The loaded quality factor (Q l ) can be obtained by adding the losses (Q ext ) of the external excitation circuit to the Q u as expressed ... cavity, and H the height of the cavity. Using (5.1), the initial dimensions of the cavity with perfectly conducting walls are determined for a resonant frequency of 60 GHz for the TE 101 dominant...
Ngày tải lên: 21/06/2014, 22:20
Báo cáo hóa học: " Research Article Cross-Layer Resource Scheduling for Video Traffic in the Downlink of OFDMA-Based Wireless 4G Networks" docx
Ngày tải lên: 21/06/2014, 23:20