OFDM

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: - , . Bychkovsky V.A., Reutskaya J.Y. Functional possibilities of the system's substitute models.
On the basis of the use offrequency-quantum ability of the systems of substituting for the first type possibilities of transmission of signals are analysed with a limit on the greatest frequency and level of distortions.
Keywords: frequency-quantum ability, informative ability.
621.376.4
- OFDM
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(Orthogonal Frequency Division Multiplexing - OFDM) (DVB-T, DAB, DRM) WiFi, WiMAX. - -QPSK, BPSK, 16QAM, 64QAM. OFDM . OFDM -
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(1)
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[3].
N
k(t) = Z An ' g(t ~ ln ),
n-1
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^ 1 ' |S(tn )|
S(t) tn A,.
c(t) S(t) k(t). An .
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b(t) - 1 - ^ an g(t - 1 ), g(t) - e~- , an
n=-
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1. .. // - : . ., , 2005 - .595-602.
2. Seung Hee Han, Jae Lee. An Overview of Peak-to-Average Power Ratio Reduction Techniques for Multicarrier Transmission // IEEE Wireless Communication, 2005 - 56-64.
3. Nee R., Wild A. Reducing the Peak-to-Average Power Ration of OFDM // IEEE Wireless Communication, 2004- 56-64.
4. Jones A.E., Wilkinson T.A. Block Coding Scheme for Reduction of Peak to Mean Envelope Power Ratio of Multicarrier Transmission Scheme // Elect. Lett., vol.30, no.22, Dec. 1994, pp. 2098-99.
5. Li X., Cimini L. Effect of Clipping and Filtering on the Performance OFDM // IEEE Com. Lett., v.2 no.5, May 1998, pp. 131-33.
6. Hill G., Faulkner M. Reducing the Peak-to-Average Power Ratio in OFDM by Cyclically Shifting Partial Transmit Sequences // Elect. Lett., v.36, no.6, Mar. 2000, pp. 260-61.
7. ONeill R., Lopes L. Envelope Variations and Spectral Splatter in Clipped Multicarrier Signals // Proc. IEEE PIMRC95, Toronto, Canada, Sept. 1995, pp.71-75.
8. Breiling H., Muller-Weinfurtner S.H., Huber J., SLM Peak-Power Reduction without Explicit Side Information // IEEE Commun. Lett., vol.5, no. 6, June 2001, pp.239-41.
9. Muller S.,. Huber J. OFDM with Reduced Peak-to-Average Power Ratio by Optimum
"" . .-2009.-39
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, ,
Combination of Partial Transmit Sequences // Elect. Lett., v. 33, no.5, Feb. 1997, pp.368-69.
10. Tellado J. Peak to Average Power Reduction for Multicarrier Modulation, Ph.D. dissertation, Stanford Univ., 2000.
.., ... OFDM.B , OFDM .
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Bilokon A.V., Golovin V.A.. Methods of reduction of the peak-factor in channels with
OFDM. In given article the basic methods of reduction of the peak-factor in systems which use OFDM signals are considered.
Key words: OFDM, peak-to-average, modulation_____________________________________
621.378.001

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