The New Peak-to-Average Power Reduction Algorithm in the OFDM System |
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Authors: | Chau Yun Hsu Horng Guo Do |
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Affiliation: | (1) Graduate Institute of Communication Engineering, Tatung University, Taipei, Taiwan, ROC;(2) No. 40, Chung Shan North Road, 3rd Section, Taipei, 104, Taiwan, ROC |
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Abstract: | In this paper, we proposed a new peak-to-average power reduction (PAPR) algorithm of orthogonal frequency division multiplexing
(OFDM) system using block coding scheme and discrete cosine transform (DCT). We are using DCT to concentrate the energy of
the original signal into a few coefficients. After the DCT data were fed into the IDFT, the output of signal of OFDM appeared
to have uniform distribution. With the newly proposed schemes, that we founded those three important properties, the first
property is the PAPR used be reduced by 9.4419 dB for BPSK mapper. The second property is the OFDM signals have capability
of noise immunity and of error correction. And the third property is the effect of PAPR reduced can be implement by cascaded
different method. |
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Keywords: | Peak-to-average power ratio (PAPR) Discrete cosine transform (DCT) Energy-packing efficiency (EPE) Inverse discrete fast Fourier transform (IDFT) Peak envelop power (PEP) |
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