Title :
Performance analysis of an OFDM system using data-aided channel estimation
Author :
Kaasila, Veli-Pekka
Author_Institution :
Nokia Mobile Phones, Oulo, Finland
Abstract :
The performance of an OFDM system in an unknown time-variant frequency-selective Rayleigh fading channel is analyzed. An optimal 2-dimensional finite length Wiener interpolator is used as a data-aided channel estimator. An exact expression for the bit error probability is derived and used in the performance analysis. Results show that the pilot symbol spacing and the length of the Wiener interpolator have to be selected jointly according the Doppler spread and the delay spread of the channel
Keywords :
Doppler effect; OFDM modulation; Rayleigh channels; delays; error statistics; interpolation; parameter estimation; time-varying channels; DFT; Doppler spread; IDFT; OFDM system; bit error probability; channel delay spread; data-aided channel estimation; digital mobile communications; exact expression; frequency-selective Rayleigh channel; intersymbol interference; multipath propagation; optimal 2-D finite length Wiener interpolator; orthogonal frequency division multiplexing; performance analysis; pilot symbol spacing; time-variant fading channel; Channel estimation; Delay; Error probability; Fading; Intersymbol interference; Mobile communication; Mobile handsets; Modems; OFDM; Performance analysis;
Conference_Titel :
Vehicular Technology Conference, 1999 IEEE 49th
Conference_Location :
Houston, TX
Print_ISBN :
0-7803-5565-2
DOI :
10.1109/VETEC.1999.778478
