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 intercareer 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 subcarriers the ICI due to Doppler spread can be reduced by approximately 15dB. By using weighted groups of three subcarriers a further 15dB reduction in ICI can be achieved.
|Number of pages||6|
|Publication status||Published - 1 Dec 1998|
|Event||IEEE Global Telecommunications Conference 1998 - Sydney, Australia|
Duration: 8 Nov 1998 → 12 Nov 1998
|Conference||IEEE Global Telecommunications Conference 1998|
|Abbreviated title||IEEE GLOBECOM 1998|
|Period||8/11/98 → 12/11/98|