Cyclic spectral analysis of OFDM/QAM modulation using stochastic matrix-based method | Zendy

Desimir Vučić | Zendy

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Cyclic spectral analysis of OFDM/QAM modulation using stochastic matrix-based method

Author(s) -

Desimir Vučić

Publication year - 2003

Publication title -

facta universitatis - series electronics and energetics

Language(s) - English

Resource type - Journals

eISSN - 2217-5997

pISSN - 0353-3670

DOI - 10.2298/fuee0303343v

Subject(s) - cyclic prefix , orthogonal frequency division multiplexing , qam , quadrature amplitude modulation , synchronization (alternating current) , algorithm , computer science , modulation (music) , mathematics , electronic engineering , channel (broadcasting) , telecommunications , engineering , physics , bit error rate , acoustics

The cyclostationarity of the OFDM/QAM signals induced by the use of cyclic prefix or pulse shaping is the key to blind synchronization, channel identification and equalization in these systems. Therefore, continuous-time and discrete-time spectral correlation characterization of the pulse shaping OFDM/QAM signals is performed by a matrix-based stochastic method based on Markov chain signal representation. Exact analytical expression for the cyclic spectrum of the continuous-time OFDM/QAM signal is derived applying the proposed method, the characteristic cyclic features according to the cyclic prefix and/or pulse shaping employing are analyzed and some graphed results are presented.

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