Fundamentals of Spread Spectrum Modulation phần 5 pot

... 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 ... of the output of the book Mobk087 August 3, 2007 13: 15 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 37 0 00 p z 1 10 T pz 1 12 T pz 2 23 T pz 3 34 T p z 4 45 T p...

Ngày tải lên: 07/08/2014, 21:20

... 13:19 v Contents FundamentalsofSpreadSpectrumModulation 1 1 Introduction 1 2 ReviewofBasicDigitalModulationTechniques 3 3 TypesofSpreadSpectrumModulation 7 4 Spreading Codes . 11 5 Code Acquisition ... features of a spread spectrum modulation system. The type of spread spectrum system shown in Fig. 1 is known as binary direct sequence (DS) spread spectrum modulation, beca...

Ngày tải lên: 07/08/2014, 21:20

... 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 11 4 SPREADING ... LEFT) 21 [ 7 ] ∗ 32 [ 13 ] ∗ 42 [ 23 ] ∗ 56 [ 45 ] ∗ , [ 75 ] , [ 67 ] 66 [ 103 ] ∗ , [ 147 ] , [ 155 ] 718 [ 211 ] ∗ , [ 217 ] , [ 2 35 ] , [ 367 ] ,...

Ngày tải lên: 07/08/2014, 21:20

... 0.82 15 5.9067 41 .5 0.0032 0.8099 5. 8246 42.0 0.0028 0.7978 5. 7708 42 .5 0.0024 0.7 854 5. 7430 43.0 0.0020 0.7727 5. 7394 43 .5 0.0018 0. 759 6 5. 758 6 44.0 0.00 15 0.7462 5. 7990 44 .5 0.0013 0.7326 5. 859 7 45. 0 ... T 3 ) z T 1 +T 2 +T 3 −1 . (5. 9) book Mobk087 August 3, 2007 13: 15 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 33 0 00 pz 1 10 T p z 1 12 T p z 2...

Ngày tải lên: 07/08/2014, 21:20

... d f +4 d f +5 d f +6 d f +7 3 (7, 5) 5 1 4 12 32 80 192 448 1024 4 ( 15, 15) 6 2 7 18 49 130 333 836 2069 5 ( 35, 23) 7 4 12 20 72 2 25 500 1,324 3680 6 ( 75, 53 ) 8 2 36 32 62 332 701 2,342 55 03 7 (171, ... d f +4 d f +5 d f +6 d f +7 3 (7, 7, 5) 8 3 0 5 0 58 0 201 0 4 (17, 15, 13) 10 6 0 6 0 58 0 118 0 5 (37, 33, 25) 12 12 0 12 0 56 0 320 0 6 ( 75, 53 , 47) 13 1 8 26 2...

Ngày tải lên: 07/08/2014, 21:20

... loop of a code synchronizer locks. 0 0 .5 1 1 .5 2 2 .5 3 3 .5 4 4 .5 5 0 0 .5 1 f, Hz S b (f, ε ) Power spectrum of c(t)c(t+ ε ); T c = 1 s; N = 7 ε = 0.1T c s 0 0 .5 1 1 .5 2 2 .5 3 3 .5 4 4 .5 5 0 0.1 0.2 f, ... orthogonality of a pair of codes holds only if the codes are aligned. book Mobk087 August 3, 2007 13: 15 FUNDAMENTALS OF SPREAD SPECTRUM MODULATIO...

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 ... Performance of a FH/MFSK noncoherent spread- spectrum system in barrage noise jamming. book Mobk087 August 3, 2007 13: 15 FUNDAMENTALS OF SPREAD SPECTRUM MOD...

Ngày tải lên: 07/08/2014, 21:20

... book Mobk087 August 3, 2007 13: 15 58 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 0 5 10 15 20 25 30 35 40 45 50 10 -6 10 -5 10 -4 10 -3 10 -2 10 -1 P/J W/R, dB P b FIGURE 28: ... 2007 13: 15 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 57 0 5 10 15 20 25 30 35 40 10 -6 10 -5 10 -4 10 -3 10 -2 10 -1 P/J W/R, dB P b FIGURE 27: Bit error probability for the F...

Ngày tải lên: 07/08/2014, 21:20

... 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 , ... book Mobk087 August 3, 2007 13: 15 74 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 0 5 10 15 20 25 30 35 40 45 50 10 -8 10 -...

Ngày tải lên: 07/08/2014, 21:20

... loop of a code synchronizer locks. 0 0 .5 1 1 .5 2 2 .5 3 3 .5 4 4 .5 5 0 0 .5 1 f, Hz S b (f, ε ) Power spectrum of c(t)c(t+ ε ); T c = 1 s; N = 7 ε = 0.1T c s 0 0 .5 1 1 .5 2 2 .5 3 3 .5 4 4 .5 5 0 0.1 0.2 f, ... 2. book Mobk087 August 3, 2007 13: 15 FUNDAMENTALS OF SPREAD SPECTRUM MODULATION 15 -20 - 15 -10 -5 0 5 10 15 20 -0 .5 0 0 .5 1 τ , s R c ( τ...

Ngày tải lên: 27/06/2014, 09:20