Fundamentals of Spread Spectrum Modulation phần 1 potx

... descriptions of two generic spread spectrum modulation techniques—QPSK spreading and frequency-hop spread spectrum. book Mobk087 August 3, 2007 13:15 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION ... 13:19 Fundamentals of Spread Spectrum Modulation i MOBK087-FM MOBKXXX-Sample.cls August 3, 2007 13:19 v Contents FundamentalsofSpreadSpectrumModulation 1 1 Introduc...

Ngày tải lên: 27/06/2014, 09:20

... Questions 15 9 Minicase 16 0 IV CONTENTS Accounting and Finance 11 1 The Balance Sheet 11 2 Book Values and Market Values 11 5 The Income Statement 11 7 Profits versus Cash Flow 11 8 The Statement of Cash ... Flows 11 9 Accounting for Differences 12 1 Taxes 12 3 Corporate Tax 12 3 Personal Tax 12 5 Summary 12 6 Related Web Links 12 7 Key Terms 12 7 Quiz 12 7 Practice Pro...

Ngày tải lên: 05/08/2014, 13:20

... Introduction 1 2 ReviewofBasicDigitalModulationTechniques 3 3 TypesofSpreadSpectrumModulation 7 4 Spreading Codes . 11 5 Code Acquisition and Tracking [1] 24 6 Performance of Spread Spectrum Systems ... August 3, 2007 13 :15 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 3 to α A 1 d 1 ( t − t d ) { 1 + cos [ 4π f 0 ( t − t d )] } because c 2 1 ( t − t d ) = 1, 0 ≤ t...

Ngày tải lên: 07/08/2014, 21:20

... 8  noncoherent noncoherent noncoherent a Q ( x ) =  ∞ x exp ( −u 2 /2 ) √ 2 du =  π /2 0 exp  − u 2 2sin 2 φ  dφ π  exp ( −x 2 /2 ) x √ 2 , x > 4. book Mobk087 August 3, 20 07 13:15 14 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 4. Define ... log 2 M, M > 2 11.2dB, M = 2 12. 9dB, M = 4 16.8dB, M = 8 21 .4dB, M = 16 26 .3dB, M = 32 M-ary phase- 0.5...

Ngày tải lên: 07/08/2014, 21:20

... SEQUENCE 001 1001 231 010 01 033 32 0 03 30 032 13 012 210 131 0 020 0202220 021 12 030 11 031 130 230 3 112 21 132 21 133 33 12 232 For the 11 Mbps data rate, each symbol represents eight bits of information. ... CORRELATION 3 7 5 .39 0.770 4 15 9. 43 0.629 5 31 14 .32 0.462 6 63 23. 35 0 .37 1 7 127 35 .34 0.278 8 255 52.47 0.206 9 511 77.62 0.152 TABLE 5: Initial Loads and S...

Ngày tải lên: 07/08/2014, 21:20

... Times V T P fa P d T s 41 .0 0.0037 0.8215 5.9067 41 .5 0.0032 0.8099 5.8 246 42 .0 0.0028 0.7978 5.7708 42 .5 0.00 24 0.78 54 5. 743 0 43 .0 0.0020 0.7727 5.73 94 43.5 0.0018 0.7596 5.7586 44 .0 0.0015 0. 746 2 5.7990 44 .5 ... 0p 34 z T 3 0 00 0p 44 z T 4 p 45 z T 4 00 0p 54 z T 5 0        . (5. 14) Consider the matrix X 1 = QR =        0 p 12 z T 1 000...

Ngày tải lên: 07/08/2014, 21:20

... August 3, 2007 13: 15 44 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION FIGURE 17: Digital implementation of a noncoherent matched filter for acquisition [1]. 5. 3 Tracking in Spread Spectrum Once the ... Q ) −1 R  z=1 . (5. 25) Using the result of (5. 18), the average time to reject an incorrect phase cell is the sum of the elements of the first row of the final matrix...

Ngày tải lên: 07/08/2014, 21:20

... If ρ is the fraction of book Mobk087 August 3, 2007 13:15 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 53 As alluded to above, one could deduce the performance of FH spread spectrum in barrage noise ... implementation of the hardware is decidedly different. 6 PERFORMANCE OF SPREAD SPECTRUM SYSTEMS OPERATING IN JAMMING—NO CODING The performance of a spread spectr...

Ngày tải lên: 07/08/2014, 21:20

... concentrated its power over a fraction of the spread bandwidth. In the case of DSSS, book Mobk0 87 August 3, 20 07 13:15 60 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 0 5 10 15 20 25 10 -4 10 -3 10 -2 10 -1 10 0 (P/J)(W/R), ... [2]  P b  max =            0.083 ( P/J )( W/R ) ,  P J  W R  ≥ 0 .70 9 Q   2  P J  W R   ,  P J  W R  < 0 .70 9. (6.1...

Ngày tải lên: 07/08/2014, 21:20

... 0 8 (367, 331, 225) 16 1 0 24 0 113 0 287 0 book Mobk 087 August 3, 2007 13:15 68 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION TABLE 11: Abbreviated List of BCH Code Parameters [16] nktnktnkt 31 ... 7, 5) 8 3 0 5 0 58 0 201 0 4 (17, 15, 13) 10 6 0 6 0 58 0 1 18 0 5 (37, 33, 25) 12 12 0 12 0 56 0 320 0 6 (75, 53, 47) 13 1 8 26 20 19 62 86 204 7 (171, 145, 133) 14 1 0 20...

Ngày tải lên: 07/08/2014, 21:20

... Rafael, CA: Morgan and Claypool, 2006. 78 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION book Mobk087 August 3, 2007 13:15 76 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 0 5 10 15 20 25 30 10 -12 10 -10 10 -8 10 -6 10 -4 10 -2 10 0 E b /N 0 , ... in 198 0–81 and in 199 1, Motorola Corporate Research Laboratories in the summer of 199 5, Motorola Cellular Infrastructure Group A...

Ngày tải lên: 07/08/2014, 21:20

... Element Analysis 1. Basic Concepts of the Finite Element Method Text â The McGrawHill Companies, 2004 1. 5 Examples of Finite Element Analysis 15 0.0 019 7Љ Z X 0.25Љ 0.488Љ Figure 1. 9 Finite element ... −k 2 k 2  0 U 2 U 3  =      0 f (2) 2 f (2) 3      (2 .12 ) The addition of Equations 2 .11 and 2 .12 yields  k 1 −k 1 0 −k 1 k 1 +k 2 −k...

Ngày tải lên: 08/08/2014, 17:20

... Development â 2002 Donald Rutherford Routledge Dictionary of Economics Second edition The most informative dictionary of economics available, the Routledge Dictionary of Economics avoids the tendency ... increaseconsumerdemandforproducts newtothemarketorin EXCESSSUPPLY. References Carter,M.,Casson,M.andSuneja,V. (19 98)Theeconomicsofmarketing, Cheltenham,UK,andNort...

Ngày tải lên: 09/08/2014, 19:22

... Vectors 7.3 7.4 7.5 Concept Analysis 51 52 56 59 60 63 64 65 68 74 76 78 79 82 83 84 87 89 90 91 95 98 10 2 10 5 10 6 11 2 11 5 11 6 11 8 12 2 12 5 13 1 13 3 13 4 13 6 13 6 14 0 14 3 14 8 15 2 Object Diagram Recovery Object Sensitivity Dynamic ... Contents Foreword XI Preface XIII 1 2 3 Introduction 1. 1 1. 2 1. 3 1. 4 1. 5 1. 6 1. 7 Reverse Engineering...

Ngày tải lên: 13/08/2014, 08:20