Multi carrier and spread spectrum systems phần 7 ppsx
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...
Multi carrier and spread spectrum systems phần 3 ppsx
... 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...
Multi carrier and spread spectrum systems phần 5 ppsx
... 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...
Multi carrier and spread spectrum systems phần 2 docx
... 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...
Multi carrier and spread spectrum systems phần 4 pdf
... 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...
Multi carrier and spread spectrum systems phần 6 docx
... 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/...
Multi carrier and spread spectrum systems phần 8 ppt
... −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...
Multi carrier and spread spectrum systems phần 9 docx
... 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...
Multi carrier and spread spectrum systems phần 10 pdf
... 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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