Title :
Combined Effect Analysis of Wiener Phase Noise and Doppler Spread in OFDM Communication System
Author :
Mahmoud, Mohammad ; Riad, Mona
Author_Institution :
Dept. of Signals, Air Defence Forces, Cairo
Abstract :
We derive an exact closed-form expression for the SNR degradation due to the combined effect of Wiener phase noise and Doppler spread in the OFDM system corrupted by shadowed multipath effect. The derivation depends on the continuous time signal model analysis assuming the subcarrier data symbols are constants. A simple approximate SNR degradation formula is obtained for slow fading channel, small phase noise effect and small phase noise linewidth-to-maximum Doppler frequency ratio. This approximate formula shows that the degradation factor in dB is the summation of the degradation factor in dB due to the phase noise effect only and the degradation factor in dB due to the Doppler spread only
Keywords :
Doppler effect; OFDM modulation; continuous time systems; fading channels; multipath channels; phase noise; stochastic processes; Doppler spread; OFDM communication system; Wiener phase noise; closed-form expression; continuous time signal model analysis; fading channel; orthogonal frequency division multiplexing; shadowed multipath effect; subcarrier data symbol; Degradation; Delay; Fading; Local oscillators; OFDM; Phase noise; Power system modeling; Random variables; Signal analysis; Signal to noise ratio;
Conference_Titel :
Radio Science Conference, 2006. NRSC 2006. Proceedings of the Twenty Third National
Conference_Location :
Menoufiya
Print_ISBN :
977-5031-84-2
Electronic_ISBN :
977-5031-84-2
DOI :
10.1109/NRSC.2006.386368
