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Computation of the PAR of continuous-time real-value OFDM signal

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3 Author(s)
Hua Yu ; Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China ; Xiang Yang ; Gang Wei

Computation of the peak-to-average envelope power ratio (PAR) of an orthogonal frequency division multiplexing (OFDM) signal plays a major role in peak reduction methods. A procedure for computing the PAR of a continuous-time real-value OFDM signal which is known as discrete multi-tone, with any PSK or QAM installations, is developed here. It is shown that the derivative of the real-value signal waveform function (RVSWF), whose square is the instantaneous envelope power function (EPF), can be transformed into a linear sum of Chebyshev polynomials of the first kind and the second kind. Consequently, the roots of the derivative of RVSWF can be obtained by solving a polynomial. The procedure may be useful for theoretical studies of PAR distributions and developing the peak reduction methods.

Published in:

Communication Technology Proceedings, 2003. ICCT 2003. International Conference on  (Volume:2 )

Date of Conference:

9-11 April 2003