... (GLOBECOM’ 95) , Singapore, pp 2 059 –2063, Nov 19 95 [ 15] Kaiser S., “Trade-off between channel coding and spreading in multi-carrier CDMA systems, ” in Proc IEEE International Symposium on SpreadSpectrum ... pp 1 15 120, Sept 1998 [18] Kaiser S and Fazel K., “A spread- spectrum multi-carrier multiple-access system for mobile communications,” in Proc International Workshop on Multi-Carrier Spread- Spectrum ... Phoenix, USA, pp 13 65 136 9, May 1997 [27] Ross G.F., “The transient analysis of certain TEM mode four-post networks,” IEEE Transactions on Microwave Theory and Techniques, vol 14, pp 52 8 54 2, Nov 1966...
... estimating and suppressing narrow-band interference in PN spread- spectrum systems, ” IEEE Trans Communications, vol 30, no 5, pp 913 924, 1982 [5] R A Iltis and L B Milstein, “Performance analysis ... K Das, “Narrow-band interference excision in spreadspectrumsystems using lapped transforms,” IEEE Trans Communications, vol 45, no 11, pp 1444–1 455 , 1997 [8] A Pouttu, J K Juntti, and T J Kumpum¨ ... interference suppression in a hybrid DS/FHsystem,” in Proc IEEE 5th International Symposium on SpreadSpectrum Techniques and Applications, pp 351 – 355 , Sun City, South Africa, September 1998 [9] P Henttu,...
... PN spreadspectrum systems, ” IEEE, Transactions on Communications, vol 30, pp 913 924, May 1982 [31] Kondo S and Milstein L.B., “On the use of multicarrier direct sequence spreadspectrum systems, ” ... Communications Magazine, vol 26, pp 48 54 , June 1988 [13] Dixon R.C., SpreadSpectrumSystems New York: John Wiley & Sons, 1976 [14] Engels M (ed.), Wireless OFDM Systems: How to Make Them Work Boston: ... Multi-Carrier and SpreadSpectrumSystems K Fazel and S Kaiser 2003 John Wiley & Sons, Ltd ISBN: 0-470-84899 -5 (k) , where k may take on the values 0, , 50 MC-CDMA and MC-DS-CDMA (k) Figure 2-1 spreader...
... European Transactions on Telecommunications (ETT), vol 11, pp 55 5 56 5, Nov./Dec 2000 [43] Schnell M., Systeminh¨ rente St¨ rungen bei Spread- Spectrum -Vielfachzugriffsverfahren f¨ r die Mobila o u ... in Proc International Workshop on Multi-Carrier Spread- Spectrum & Related Topics (MC-SS 2001), Oberpfaffenhofen, Germany, pp 131 138 , Sept 2001 [13] Egle J., Reinhardt M and Lindner J., “Equalization ... Workshop on Multi-Carrier Spread- Spectrum & Related Topics (MC-SS 2001), Oberpfaffenhofen, Germany, pp 13 21, Sept 2001 [ 35] Nobilet S., Helard J.-F and Mottier D., “Spreading sequences for uplink...
... QPSK 1/2 2/3 3/4 5/ 6 7/8 3.1 4.9 5. 9 6.9 7.7 dB dB dB dB dB 3.6 5. 7 6.8 8.0 8.7 dB dB dB dB dB 5. 4 8.4 10.7 13. 1 16.3 dB dB dB dB dB 16-QAM 1/2 2/3 3/4 5/ 6 7/8 8.8 11.1 12 .5 13 .5 13. 9 dB dB dB dB ... information This leads to a much Channel Estimation 155 100 BU, km/h 10−1 TU, 30 km/h HT, 150 km/h BER RA, 250 km/h 10−2 10−3 10−4 10 Eb /N0 in dB 11 12 13 14 Figure 4-30 BER versus SNR of MC-CDMA with ... TH, 30 km/h HT, 150 km/h RA, 250 km/h −1 10−2 10−3 10−4 Figure 4-33 10 11 12 Eb /N0 in dB 13 14 15 16 BER versus SNR of SS-MC-MA with pilot symbol aided channel estimation 158 Implementation...
... bytes 0 .59 6 4 .5 dB (16, 15) (64 ,57 ) 106 bytes 0.834 6.2 dB (56 ,49)(32,26) 159 bytes 0.711 3.8 dB (49,42)(32,31) 159 bytes 0.827 6 .5 dB (43,42)(32,31) 159 bytes 0.9 45 8 .5 dB inputs or generate soft ... autocorrelation 176 Implementation Issues 0.20 0. 15 0.10 ΨE [rad] 0. 05 0.00 −0. 05 −0.10 −0. 15 −0.20 Figure 4 -52 10 15 20 OFDM symbol number 25 30 Mixed time/frequency representation of the total ... without pre-distortion 2.6 dB 4.0 dB 3.2 dB 4.7 dB 1. 25 dB 3.0 dB DS-CDMA without pre-distortion 5. 0 dB 5.5 dB 5. 3 dB 5. 8 dB 0.9 dB 1.1 dB – 2 .5 dB – 3.1 dB – 0.9 dB Transmission scheme MC-CDMA...
... system of Fig 13, this book Mobk087 August 3, 2007 13: 15 FUNDAMENTALS OF SPREADSPECTRUM MODULATION p00 z p23 z T2 p12 z T1 p34 z T3 37 p 45 zT4 p10 z T1 p33 z T3 p21 z T2 FIGURE 15: State-transition ... p 23 p 33 (5. 28) From the Q-matrix, we obtain [I − Q ]z=1 = − p 21 − p 12 − p 23 − p 33 (5. 29) book Mobk087 38 August 3, 2007 13: 15 FUNDAMENTALS OF SPREADSPECTRUM MODULATION ... p 34 = − p 33 ; p 45 = p 10 = − p 12 ; p 21 = − p 23 ; p 34 = − p 33 ; p 45 = 1(primed probabilities are s + n) book Mobk087 40 August 3, 2007 13: 15 FUNDAMENTALS OF SPREADSPECTRUM MODULATION...
... với FHSS Ví dụ Direct Sequence SpreadSpectrum Transmitter Direct Sequence SpreadSpectrum Transmitter Direct Sequence SpreadSpectrum Using BPSK Example Approximate Spectrum of DSSS Signal Vấn ... khe thời gian dùng để truyền khung Trải phổ nhảy tần Frequency Hopping SpreadSpectrum Frequency Hopping SpreadSpectrum (FHSS) Được phát minh nữ diễn viên Hollywood Hedy Lamarr, Là kĩ ... k chíp mã tương ứng với từ tần số Trải phổ dãy trực tiếp Direct Sequence SpreadSpectrum Direct Sequence SpreadSpectrum (DSSS) Sử dụng mã trải phổ băng rộng để điều chế tín hiệu sóng mang...
... học 52 ,37 - 8,64 43,73 60 - 12, 45 47 ,55 a) x + 4,32 = 8,67 x = 8,67 – 4,32 x = 4, 35 b) 6, 85 + x = 10,29 x = 10,29 – 6, 85 x = 3,44 c) x - 3,64 = 5, 86 x = 5, 86 + 3,64 x = 9 ,5 d) 7,9 - x = 2 ,5 x ... 37,46 5, 12 - 0,68 4,44 50 ,81 - 19, 256 31 ,55 4 69 - 7, 85 61, 15 -Cả lớp nhận xét sửa Bài : - Yêu cầu Hs đọc đề, phân tích đề làm Số kg đường lấy tất : 10 ,5 + = 18 ,5 (kg) Số kg đường lại : 28, 75 – ... 5, 2 = 5, 7 x = 5, 7 + 5, 2 x = 10,9 b) x + 2,7 = 8,7 + 4,9 x + 2,7 = 13, 6 x = 13, 6 - 2,7 x = 10,9 Bài : - Yêu cầu Hs đọc đề làm - Yêu cầu Cả lớp sửa a)12, 45 + 6,98 + 7 ,55 =(12, 45 + 7 ,55 )+ 6,98 =...