Fundamentals of Spread Spectrum Modulation phần 3 doc

... 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

... occur; the world is then in a dead stagnant state. Fig. 3. 12. Rudolf Clausius and his contemplation of the heat death 44 See Chap. 5 for a formal proof and for an explanation of what exactly ... the heat death he sees the The end of the world as the completion of an inevitable evolution – that is And the historian Henry Adams (1 838 –1918) – an apostle...

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Ngày tải lên: 24/07/2014, 08:20

... shows you what each of these elements looks like, and Figure 7-7 shows you the HTML used to draw Figure 7-6. 136 Chapter 8 How the Book of JavaScript Tip Box Works The Book of JavaScript website ... most of the part identifying the form, window.document .the_ form, with the word this, which refers to the thing that contains it. For example, in X of Figure 7-25,...

Ngày tải lên: 06/08/2014, 16:23

... 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

... 2, EI z L 3 = 207(10 3 )(2 133 33 ) 30 0 3 = 1 635 .6N/mm Table 4.4 Element- Displacement Correspondence Global Displacement Element 1 Element 2 Element 3 1 100 2 200 3 311 4 420 5 030 6 040 7 0 03 ... 5 system of equations, we obtain the results ␪ 1 = 9 .36 38(10 −4 ) rad v 2 =−0. 738 11 mm ␪ 2 =−0.0092 538 rad v 3 =−5.55 23 mm ␪ 3 =−0.019444 rad Hutton: Fundame...

Ngày tải lên: 08/08/2014, 17:20

... 10-node triangular element shown in Figure P6.13. Note that the nodes are equally spaced on their edges. 1 2 3 4 5 x x 1 ϭ 2 x 2 ϭ 2. 25 x 3 ϭ 2 .5 x 4 ϭ 2. 75 x 5 ϭ 3 Hutton: Fundamentals of Finite Element Analysis 6. ... Solutions Four Elements, Eight Elements, x (inches) T ( ◦ F) T ( ◦ F) 0 180 180 0 .5 158 .08* 155 .31 1.0 136.16 136.48 1 .5 123 .59 * 122.19 2.0 111....

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