Title :
Correlation between ICI and the carrier signal in OFDM under Doppler spread influence
Author :
Yen, Rainfield Y. ; Liu, Hong-Yu ; Wu, C.M.
Author_Institution :
Dept. of Electr. Eng., Tamkang Univ., Taipei, Taiwan
Abstract :
In this paper, we derive an exact expression for the power correlation between the inter-carrier interference (ICI) and the carrier signal and show that the correlation is non-negligible for normal Doppler spread values. However, the correlation tends to vanish as Doppler spread approaches infinity. Then, the symbol error rates (SERs) for M-QAM OFDM systems over frequency-selective Ricean fading channels based on both the correlated and the uncorrelated ICI models are given for comparison.
Keywords :
OFDM modulation; Rician channels; correlation methods; error statistics; frequency selective surfaces; intercarrier interference; quadrature amplitude modulation; Doppler spread value; ICI analysis; M-QAM OFDM system; SER; carrier signal; frequency-selective Ricean fading channel; inter-carrier interference; power correlation; symbol error rates; AWGN; Baseband; Discrete Fourier transforms; Error analysis; Fading; Frequency domain analysis; H infinity control; OFDM; Power engineering computing; Power system modeling;
Conference_Titel :
Signal Processing and Communications Applications Conference, 2009. SIU 2009. IEEE 17th
Conference_Location :
Antalya
Print_ISBN :
978-1-4244-4435-9
Electronic_ISBN :
978-1-4244-4436-6
DOI :
10.1109/SIU.2009.5136568
