Title :
Pilot spacing in orthogonal frequency division multiplexing systems on practical channels
Author :
Rinne, Jukka ; Renfors, Markku
Author_Institution :
Telecommun. Lab., Tampere Univ. of Technol., Finland
fDate :
11/1/1996 12:00:00 AM
Abstract :
The performance of two different channel interpolation methods to be used with orthogonal frequency division multiplexing systems are investigated. The considered schemes use constant pilot frequencies for channel response estimation. The interpolation techniques are piecewise-constant and piecewise-linear methods which due to their inherent simplicity are straightforward to implement. The results are given as error probability vs. pilot separation for a channel with exponential type power-delay profile and M-ary quadrature amplitude (MQAM) submodulation with M=4, 16 and 64
Keywords :
delays; error statistics; frequency division multiplexing; interpolation; piecewise constant techniques; piecewise-linear techniques; probability; quadrature amplitude modulation; telecommunication channels; 16QAM; 4QAM; 64QAM; M-ary quadrature amplitude submodulation; OFDM; channel interpolation methods; channel response estimation; constant pilot frequencies; error probability; exponential type power-delay profile; orthogonal frequency division multiplexing systems; piecewise-constant method; piecewise-linear method; pilot separation; pilot spacing; Bandwidth; Channel estimation; Delay; Error probability; Frequency division multiplexing; Frequency estimation; Interpolation; OFDM; Piecewise linear approximation; Piecewise linear techniques;
Journal_Title :
Consumer Electronics, IEEE Transactions on
