Title :
Pilot design for OFDM systems in the presence of phase noise
Author :
Rabiei, Payam ; Namgoong, Won ; Al-Dhahir, Naofal
Author_Institution :
Dept. of Electr. Eng., Univ. of Texas at Dallas, Dallas, TX, USA
Abstract :
The bit error rate performance of orthogonal frequency division multiplexing (OFDM) systems is severely degraded in the presence of phase noise. The effect of phase noise on an OFDM signal has been studied in the literature. The OFDM signal sub-carriers are distorted due to phase noise in two ways. First is the constant phase shift of all the sub-carriers, and second is the inter-carrier interference. A pilot structure is proposed to estimate the phase noise spectral components in every data OFDM symbol. The pilot design parameters are specifically optimized for an OFDM system in the presence of phase noise.
Keywords :
OFDM modulation; error statistics; intercarrier interference; phase noise; OFDM signal subcarriers; OFDM systems; bit error rate performance; intercarrier interference; orthogonal frequency division multiplexing systems; phase noise spectral components; pilot design; Bit error rate; Constellation diagram; Estimation; Frequency domain analysis; Interference; OFDM; Phase noise; OFDM; Phase noise; Pilot design;
Conference_Titel :
Signals, Systems and Computers (ASILOMAR), 2010 Conference Record of the Forty Fourth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4244-9722-5
DOI :
10.1109/ACSSC.2010.5757612
