wireless communications systems 1
Báo cáo hóa học: " Research Article Implementation of Wireless Communications Systems on FPGA-Based Platforms" pptx
... register, XOR 10 8 Convolutional encoding bit level-shift register, XOR 17 4 2 61 348 522 783 10 44 15 66 Puncturing (rate independent) bit level-logic operations 0. 31 0. 31 0. 31 0. 31 0. 31 0. 31 0. 31 Puncturing ... 72 72 72 14 10 — 15 99 17 46 211 2 2670 313 8 416 4 Table 2: Computational complexity of receiver tasks in different physical layer modes Computational complexity (MOPS)/PHY mode (Mb/s) 12 18 27 36 ... Bottom Top logic logic module module 93 312 18 .16 60.93 Function generators 14 923 16 527 38.86 43.04 CLB slices DFFs or latches 12 164 6368 11 252 8544 63.35 15 .60 58.60 20.94 FPGA (Top logic module)...
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Báo cáo toán học: " An overview of learning mechanisms for cognitive systems EURASIP Journal on Wireless Communications and Networking " pot
... Comput 7(9), 11 29 11 42 (2007) doi :10 .10 02/wcm.v7:9 19 [11 ] K Tsagkaris, A Katidiotis, P Demestichas, Neural network-based learning schemes for cognitive radio systems Comput Commun 31( 14), 3394–3404 ... http://www.wirelessinnovation.org/ Accessed 29 September 2 011 18 [5] J Mitola III, GQ Maguire Jr, Cognitive radio: making software radios more personal IEEE Personal Commun 6(4), 13 18 (19 99) doi :10 .11 09/98.788 210 ... Wirel Personal Commun 49 (1) , 87 10 5 (2009) doi :10 .10 07/s 112 77-008-9559 -1 [15 ] A Bantouna, K Tsagkaris, P Demestichas, in ICAAN 2 010 : Artificial Neural Networks – ICANN 2 010 PART II, ed by K Diamantaras,...
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Introduction to Wireless Communications
... it 16 Wireless Local Area Networks (continued) 17 Wireless Local Area Networks (continued) • Institute of Electrical and Electronic Engineers (IEEE) standards – 802 .11 a, 802 .11 b, and 802 .11 g 18 ... 802 .11 b, and 802 .11 g 18 Wireless Local Area Networks (continued) 19 Wireless Local Area Networks (continued) 20 Wireless Local Area Networks (continued) 21 Fixed Broadband Wireless • Integrated ... data without the use of wires • Wireless data communications technologies include: – – – – Bluetooth Wireless LAN and WAN Satellite Cellular A Wireless World • Wireless devices – Distance: 300...
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Wireless Communications
... distances – Reader antennas designed for specific applications 12 RFID System Components (continued) 13 RFID System Components (continued) 14 RFID Applications – Automobile Security • Immobilizer – ... a tag can vary greatly – Classes of tags • Class tags are read-only • Class tags are read/write 11 RFID System Components (continued) • Antennas – Limited in size due to the dimensions of the ... listen to a description of their drugs and dosages 17 Summary • Radio frequency identification (RFID) stores information in electronic tags • RFID systems components: electronic tags, readers, antennas,...
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Wireless Communications in Business
... Objectives • List the advantages of wireless communications for businesses • Discuss the challenges of wireless communications Advantages of Wireless Technology • Basic advantages – – ... implementing wireless technology is sometimes a significant obstacle – Shortage of qualified staff 10 Summary • Wireless technology can positively impact an organization in many ways • Wireless technology ... maintenance costs Voice over Wireless LAN (VoWLAN) • VoWLAN – Takes advantage of Voice over IP (VoIP) technology – Uses wireless infrastructure to carry voice and data • Wireless VoIP phones – Telephone...
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Wireless Communications - Truyền thông không dây
... antenna bên 26 Wireless Local Area Networks (tt) 27 Wireless Local Area Networks (tt) • Các chuẩn IEEE đưa ra: – 802 .11 a, 802 .11 b, 802 .11 g , 802 .11 n 28 Wireless Local Area Networks (tt) 29 Wireless ... 5GHz) (17 GHz) mạng wireless ATM (tốc độ lên đến 15 5Mbit/s) • 19 97 Wireless LAN - IEEE802 .11 – Chuẩn IEEE, 2.4 - 2.5GHz hồng ngoại, 2Mbit/s • 19 98 phiên GSM – Dành cho UMTS (Universal Mobile Telecommunications ... • 19 33 điều chế tần số (E H Armstrong) • 19 58 A-Netz Đức • Tây dương, – Kỹ thuật tương tự (analog), 16 0MHz, thiết lập kết nối từ trạm di động, không chuyển vùng, 19 71 có 11 000 khách hàng • 19 72...
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Wireless & Mobile Systems
... commercial broadcast systems, satellite broadcast systems, telemetry and remote monitoring systems Systems that sense the environment and/or objects in the environment, including radar systems that ... General block diagram of a wireless system for a generic application as shown in Figure 1. 1 Many of the blocks and their functions apply to both wired and wireless communication systems Note, however, ... fundamental and necessary to wireless systems With the exception of the antennas, all of the remaining blocks may also be found in wired system applications Figure 1. 1 A Wireless System Introduction...
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Theory of stochastic local area channel modeling for wireless communications
... Modeling 2 .1 10 11 2 .1. 1 Signal Modulation 11 2 .1. 2 The Baseband Channel 15 2 .1. 3 Time-Invariant vs Time-Varying Channels 15 2 .1. 4 ... Spectrum 5 .1 118 Definition of the Angle Spectrum 11 9 5 .1. 2 Mapping Angles to Wavenumbers 12 0 5 .1. 3 From-the-Horizon Propagation 12 1 5 .1. 4 ... 1. 1.2 Ubiquity of Wireless Devices 1. 1.3 Smart Antennas 1. 1.4 Faster, Smaller, Cheaper Hardware 1. 1.5 Frequency...
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Fixed Wireless Access Systems
... IEEE, 86(July), 19 98, 13 83 14 01 [10 ] Nordbotten A LMDS Systems and Their Applications, IEEE Communications Magazine, June, 2000 [11 ] The IEEE 802 .16 Working Group on Broadband Wireless Access ... for: † IEEE 802 .16 .1 Air interface for 10 –66 GHz † IEEE 802 .16 .2 Coexistence of broadband wireless access systems † IEEE 802 .16 .3 Air interface for licensed frequencies in the 2 11 GHz range Figure ... Areas in Communications: Wireless Communications Series, 18 (3), March, 2000, 310 –3 21 [9] Andrisano O., Trall V and Verdone R Millimeter Waves for Short–range Multimedia Communications Systems, ...
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Simulation of Wireless Network Systems
... Physical Layer (PHY) Specification, June, 19 97 [16 ] IEEE Std 802 .11 e/D1, Draft Supplement for IEEE 802 .11 , 19 99 Edition, March, 20 01 [17 ] Stallings W Wireless Communications and Networks, Prentice ... architecture of the IEEE 802 .11 protocol architecture [19 ] Figure 13 .8 Basic DCF access mechanism [18 ] 3 61 Wireless Networks 362 minimum back off counter (Cwmin, value ¼ 31) [15 ,16 ] If the medium is ... Report No 418 2, April, 20 01 [14 ] Zahedi A et al Capacity of Wireless LAN with Voice and Data Services; IEEE Transactions on Communications, 48(7), July, 2000 [15 ] IEEE 802 .11 Standard, Wireless...
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Wireless Communications Principles and Fundamentals
... PAM pulses of Figure 2 .15 four bits are used per PCM sample coding (since nine levels can be encoded by four bits) the binary output is 011 0 011 0 010 00 011 010 0 011 110 011 00 00 011 PCM demands relatively ... this structure, the bit stream 10 11 would be coded as 11 1 010 10 0 11 0 0 01 000 011 000 One can notice that the number of bits in the output of the decoder is not 12 , as one would expect with what ... number of binary 1s in the resulting bit stream is odd and sends the message Thus, the actual transmitted message is now 10 010 1 If the bit stream arrives intact at the receiver (10 010 1), then the...
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Tài liệu Rf Mems Circuit Design For Wireless Communications pptx
... Study 18 3 18 4 Summary References 2 01 2 01 5.2.3 5.2.4 5.5.3 5.5.4 5.6 15 1 15 5 15 9 16 7 17 1 18 7 19 1 19 4 Contents xi Appendix A: GSM Radio Transmission and Reception Specifications 205 A .1 A .1. 1 A .1. 2 ... Shifters 12 6 12 7 13 0 13 2 13 3 13 6 13 7 4.4 4.4 .1 4.4.2 Reconfigurable Antennas Tunable Dipole Antennas Tunable Microstrip Patch-Array Antennas 13 9 13 9 14 0 x RF MEMS Circuit Design for Wireless Communications ... Space Platform 7 1. 3 1. 3 .1 1.3.2 1. 3.3 Wireless Standards, Systems, and Architectures Wireless Standards Conceptual Wireless Systems Wireless Transceiver Architectures 8 10 1. 4 Power- and Bandwidth-Efficient...
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Tài liệu Digital Modulation in Communications Systems – An Introduction doc
... Private office 19 95 Public 19 93 19 95 Frequency Range 1. 7 -1. 9 GHz 17 10 -17 85 MHz down 18 05 -18 80 MHz up 18 95 -19 18 MHz up/down 1. 9, 1. 93 GHz (China) 1. 897 -1. 913 GHz 450 MHz < GHz 1. 9, 1. 93 GHz (China) ... your system 44 10 Overview of communications systems GSM900 NADC PDC CDMA Geography Europe North America Japan North America, Korea, Japan Introduction 19 92 19 92 19 93 -19 94 19 95 -19 97 Frequency ... receivers work 7 .1 A digital communications transmitter 7.2 A digital communications receiver Table of contents Measurements on digital RF communications systems 8 .1 Power measurements 8 .1. 1 Adjacent...
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Channel Equalization for Wireless Communications: From Concepts to Detailed Mathematics doc
... 91 91 92 93 93 94 95 99 99 10 1 10 4 10 4 10 6 10 6 10 6 10 6 10 8 10 8 10 9 10 9 10 9 11 0 11 0 XII CONTENTS 5.6 The Literature Problems 11 0 11 2 Maximum Likelihood Sequence Detection 11 5 6 .1 6.2 6.3 11 5 11 7 ... 6.4 .1 Block form 6.4.2 Sphere decoding 6.4.3 More approximate forms An Example The Literature Problems Advanced Topics 15 1 7 .1 1 51 1 51 153 15 5 15 6 15 6 15 7 16 0 16 0 16 0 16 6 16 7 16 7 16 7 16 8 16 8 16 8 ... available ISBN 97804708742 71 Printed in the United States of America oBook ISBN: 97 811 1 810 5252 ePDF ISBN: 97 811 1 810 5283 ePublSBN:97 811 1 810 5276 MOBI ISBN: 97 811 1 810 5269 10 To my colleagues at Ericsson...
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Digital Modulation in Communications Systems – An Introduction doc
... 19 93 19 93 Private office 19 95 Public 19 93 19 95 Frequency Range 1. 7 -1. 9 GHz 17 10 -17 85 MHz down 18 05 -18 80 MHz up 18 95 -19 18 MHz up/down 1. 9, 1. 93 GHz (China) 1. 897 -1. 913 GHz 450 MHz < GHz 1. 9, 1. 93 ... WWW.DANVIENTHONG.COM 44 10 Overview of communications systems GSM900 NADC PDC CDMA Geography Europe North America Japan North America, Korea, Japan Introduction 19 92 19 92 19 93 -19 94 19 95 -19 97 Frequency ... Frequency Range 935-960 MHz down 890- 915 MHz up EGSM 925-960 MHz 880- 915 MHz 869-894 MHz down 824-849 MHz up 810 -826 MHz down 940-956 MHz up 17 77 -18 01 MHz down 14 29 -14 53 MHz up 824-849 MHz (US) 869-894...
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Wireless Communications and Networks - Recent Advances docx
... 13 Fig 14 Geometry of the proposed loop antenna (L =12 0 mm, LS=50 mm, LG=36 mm, L0 =16 mm; L1=8.9 mm, L2=33.9 mm, L3 =15 .3 mm, L4=20 .1 mm; L5=30 mm, W1 =1. 9 mm, WS=53 mm, W=80 mm, S1=0.7 mm, S2 =1 ... antenna (L =10 0 mm, LS=50 mm, LG=36 mm, L0 =15 mm; L1 =15 mm, L2=32 mm, L3 =12 .5 mm, L4=25.5 mm; L5 =19 mm, W1 =1. 9 mm, W2=6 mm, WS=52 mm, W=80 mm, S1=0.35 mm, S2=0.5 mm Reprinted from (Li et al, 2 010 ) by ... Condition 1x1 dipole 2x2 dipole 2x2 polar.-reconfig Average LOS 7.86 10 .62 NLOS 9.9 13 .18 LOS 1. 75 4. 91 7 .11 NLOS 1. 94 6.87 11 .32 95% outage Table Average and 95% Outage Channel Capacity (bit/s/Hz)...
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Wireless communications
... 15 2 15 3 15 4 15 5 15 6 15 9 15 9 16 1 16 3 17 3 17 3 17 3 17 4 17 6 17 7 17 9 18 0 18 0 18 2 18 2 18 3 18 4 18 6 19 0 19 1 19 3 Diversity ... 70 71 76 78 80 81 84 86 88 89 90 91 99 10 0 10 1 10 1 10 2 10 3 10 6 11 2 11 2 11 5 11 5 11 7 ... 12 7 12 8 12 8 13 0 13 2 13 5 13 7 14 2 14 2 14 4 14 5 14 7 14 8 15 1 15 2 Receiver Digital Modulation and Detection 5 .1 Signal Space...
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godara, lal chand - crc handbook of antennas in wireless communications [2002]
... per carrier CT2 DECT PACS PHS 864868 18 8 019 00 18 9 519 18 10 0 TDD 72 17 28 TDD 11 52 18 5 019 10 and 19 3 019 90 300 FDD 384 10 10 250 10 12 25 200 2.5 300 TDD 384 10 80 satellite, and so on The networks ... 869894 30 kHz 45 890 915 935960 200 kHz 45 824849 869894 12 50 kHz 45 940956 and 14 2 914 53 810 826 and 14 7 715 01 25 kHz 30/48 /4 DQPSK 40 GMSK BPSK/QPSK 4. 615 20 /4 DQPSK 20 1. 4 .1 United States Digital ... Mobile satellite communications, IEEE Proc., vol 82, pp 14 311 448, 19 94 11 F Abrishamkar and Z Siveski, PCS global mobile satellites, IEEE Commun Mag., vol 34, pp 13 213 6, September 19 96 12 J R Norbury,...
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