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POLYNOMIAL CANCELLATION CODING OF OFDM TO REDUCE INTERCARRIER INTERFERENCE DUE TO DOPPLER SPREAD
 

Summary: POLYNOMIAL CANCELLATION CODING OF OFDM TO REDUCE
INTERCARRIER INTERFERENCE DUE TO DOPPLER SPREAD
Jean Armstrong*, Peter M. Grant and Gordon Povey
* Department of Electronic Engineering, La Trobe University, Bundoora, 3083, Victoria, Australia,
email: j.armstrong@ee.latrobe.edu.au
Department of Electrical Engineering, The University of Edinburgh, The King's Buildings, Mayfield Road,
Edinburgh, EH9 3JL, Scotland, UK.
email: Peter.Grant@ee.ed.ac.uk, Gordon.Povey@ee.ed.ac.uk
ABSTRACT
Polynomial cancellation coding (PCC) is a coding
method for orthogonal frequency division multiplexing
(OFDM) in which the information to be transmitted is
modulated onto weighted groups of subcarriers rather
than onto individual subcarriers. It has previously been
shown that PCC substantially reduces the sensitivity of
OFDM to carrier frequency offset. In this paper, it is
shown that PCC also reduces the intercarrier interference
(ICI) due to Doppler spread. Results are presented for a
frequency non-selective i.e. flat fading channel, subject
to classical Doppler spread. By using weighted pairs of

  

Source: Armstrong, Jean - Department of Electrical and Computer Systems Engineering, Monash University

 

Collections: Engineering