Multi carrier and spread spectrum systems phần 5 ppsx

... constellation and FEC scheme but also on the amount of reference and pilot symbols spent to guarantee reliable synchronization and channel estimation. Multi- Carrier and Spread Spectrum Systems K. Fazel and ... 679–691, April 2000. Multi- Carrier Modulation and Demodulation 121 Total channel bandwidth Guard band DC sub -carrier (not used) Unused sub-carriers i.e.Virtu...

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... generation for one user Multi- Carrier Spread Spectrum 43 data symbols spread data symbols spreading code serial- to- parallel converter 01 • L − 1 sub -carrier f 0 sub -carrier f 1 sub -carrier f N c −1 01 • L ... spread spectrum communications,” Proceedings of the IEEE, vol. 76, pp. 657 –671, June 1988. [ 35] Ormondroyd R.F., Lam W.K. and Davies J., “A multi- carrier s...

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... (VTC’94), Stockholm, Sweden, pp. 1 655 –1 659 , June 1994. [8] Choi Y S., Voltz P.J. and Cassara F.A., “On channel estimation and detection for multicarrier sig- nals in fast and selective Rayleigh fading ... performance of multi- carrier and multi- carrier CDMA transmission with a high number of sub-carriers in the presence of low cost oscillators with phase noise and HPAs wi...

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... −3 0 −2 .5 0 0 2 0.1 −4 0.2 0 0.3 0 0.1 −1 .5 3 0.2 −8 0 .5 −2 1.0 −3 0.3 −4 .5 4 0.3 −12 1.6 −6 1.6 5 0 .5 −7 .5 5 0.4 −16 2.3 −8 5. 0 −2 15. 0 −8.0 6 0 .5 −20 5. 0 −10 6.6 −4 17.2 −17.7 Multi- Carrier ... 1-8(b). Spread Spectrum Techniques 31 Table 1-2 Broadcasting standards DAB and DVB-T Parameter DAB DVB-T Bandwidth 1 .5 MHz 8MHz Number of sub-carriers N c 192 ( 256 F...

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... adjacent Multi- Carrier and Spread Spectrum Systems K. Fazel and S. Kaiser  2003 John Wiley & Sons, Ltd ISBN: 0-470-84899 -5 MC-CDMA 77 024 6 8 101214 16 18 20 E b /N 0 in dB 10 5 10 −4 10 −3 10 −2 10 −1 10 0 BER MRC EGC ZF MMSE MC-CDMA ... Egle J. and Lindner J., “Transformation methods, coding and equalization for time- and frequency-selective channels,” European...

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... evaluate and optimize the channel estimation, a multi- carrier reference scenario typical for mobile radio systems is defined. The fre- quency band has a bandwidth of B = 2 MHz and is located at a carrier ... dB 16.7 dB 5/ 6 13 .5 dB 14.4 dB 19.3 dB 7/8 13.9 dB 15. 0 dB 22.8 dB 1/2 14.4 dB 14.7 dB 16.0 dB 2/3 16 .5 dB 17.1 dB 19.3 dB 64-QAM 3/4 18.0 dB 18.6 dB 21.7 dB 5/ 6 19.3...

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... mobility as Multi- Carrier and Spread Spectrum Systems K. Fazel and S. Kaiser  2003 John Wiley & Sons, Ltd ISBN: 0-470-84899 -5 206 Applications 5. 3.2 Channel Characteristics WLAN systems often ... (ETT), vol. 13, pp. 4 65 474, Sept. 2002. [62] Pollet T., Moeneclaey M., Jeanclaude I. and Sari H., “Effect of carrier phase jitter on single -carrier and multi- car...

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... asymmetrical transmission capacity, and whether they Multi- Carrier and Spread Spectrum Systems K. Fazel and S. Kaiser  2003 John Wiley & Sons, Ltd ISBN: 0-470-84899 -5 222 Applications DVB-T base ... 2. 75 3.33 QPSK 3/4 3. 95 4.12 5. 00 1/2 5. 27 5. 50 6.67 Channel spacing 1 16-QAM 3/4 7.91 8. 25 10.00 1/2 7.91 8. 25 10.00 64-QAM 3/4 11.87 12.38 15. 00 228 Applica...

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... 254 – 255 ST block codes (STBC) 238–240 ST trellis codes (STTC) 237–238 UMTS 253 Spatial diversity 233 Spreading codes 52 54 PAPR 54 , 184–1 85 Spreading length 34, 49, 55 , 201 Spread spectrum 30– 45 Spread ... and demodulation 116–123 Multi- carrier spread spectrum (MC-SS) 8–10, 41–44 Multi- carrier TDMA (MC-TDMA) 1 05 107 Multi- carrier transmission 24–30 Mult...

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