Multi carrier and spread spectrum systems phần 7 ppsx

... on MC-CDMA systems can be found in [77 ] and [81]. 4 .7. 2 Non-Linearities Multi- carrier modulated systems using OFDM are more sensitive to high power ampli- fier (HPA) non-linearities than single -carrier ... 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 HP...

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... spread spectrum communications,” Proceedings of the IEEE, vol. 76 , pp. 6 57 671 , June 1988. [35] Ormondroyd R.F., Lam W.K. and Davies J., “A multi- carrier spread spectrum approach to broadband underwater ... 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...

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... Multi- Carrier Spread- Spectrum (MC-SS’ 97) , Oberpfaffenhofen, Germany, pp. 57 68, April 19 97. [29] Sari H., “A review of multi- carrier CDMA,” in Proc. International Workshop on Multi- Carrier Spread- Spectrum ... constellation and FEC scheme but also on the amount of reference and pilot symbols spent to guarantee reliable synchronization and channel estimation. Mult...

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... 975 – 979 , Oct. 93. [19] Fazel K. and Fettweis G. (eds), Multi- Carrier Spread- Spectrum. Boston: Kluwer Academic Publishers, 19 97, Proceedings of the 1st International Workshop on Multi- Carrier Spread- Spectrum ... International Workshop on Multi- Carrier Spread- Spectrum & Related Topics (MC-SS’01). [22] Fazel K. and Kaiser S. (eds), Special Issue on Multi- Car...

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... the sub-bands to avoid 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 ... Workshop on Multi- Carrier Spread- Spectrum (MC-SS’ 97) , Oberpfaffenhofen, Germany, pp. 89–96, April 19 97. [33] Mottier D. and Castelain D., “SINR-based channel pre-c...

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... in multi- carrier systems is shown. To 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 ... 4.9 dB 5 .7 dB 8.4 dB QPSK 3/4 5.9 dB 6.8 dB 10 .7 dB 5/6 6.9 dB 8.0 dB 13.1 dB 7/ 8 7. 7 dB 8 .7 dB 16.3 dB 1/2 8.8 dB 9.6 dB 11.2 dB 2/3 11.1 dB 11.6 dB 14.2 dB 16-QAM 3/...

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... −86 −84 79 77 72 71 6 −85 −83 78 76 72 70 7 −84 −82 77 75 71 −69 10 −83 −81 76 74 −69 −68 12 −82 −80 75 73 −69 − 67 14 −81 79 74 72 −68 −66 20 −80 78 73 71 −66 −65 214 Applications Frame ... (dBm) Bandwidth (MHz) QPSK 16-QAM 64-QAM 1/2 3/4 1/2 3/4 2/3 3/4 1.5 −91 −89 −84 −82 78 76 1 .75 −90 − 87 −83 −81 77 75 3 −88 −86 −81 79 75 73 3.5 − 87 −85 −80 78 74 72 5 −86 −84 79 77 72 ... 17...

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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 ... 1. 37 1. 67 Channel spacing 1 16-QAM 3/4 1.98 2.06 2.50 1/2 1.98 2.06 2.50 64-QAM 3/4 2. 97 3.09 3 .75 1/2 2.63 2 .75 3.33 QPSK 3/4 3.95 4.12 5.00 1/2 5. 27 5.50 6. 67...

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... Multi- Carrier MC-CDMA Multi- Carrier CDMA MC-DS-CDMA Multi- Carrier DS-CDMA MCM Multi- Carrier Modulation MC-SS Multi- Carrier Spread Spectrum MC-TDMA Multi- Carrier TDMA (OFDM and TDMA) MD Multiuser Detection MF ... (PAPR) 54–55, 178 Downlink PAPR 54–55 Uplink PAPR 54 Phase diversity 241–243, 245–2 47 Phase lock loop (PLL) 174 Phase noise 173 – 177 Effects 175 –...

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