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Bit-loading algorithms for OFDM with adaptive cyclic prefix length in PLC channels

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3 Author(s)
D'Alessandro, S. ; DIEGM - Univ. di Udine, Udine ; Tonello, A.M. ; Lampe, L.

The achievable rate of OFDM systems is not necessarily maximized when deploying a cyclic prefix (CP) as long as the channel impulse response. Even though for shorter CP lengths both inter-symbol and inter-carrier interference do occur, the rate gain offered by a shortened CP may exceed the losses due to interference. In this paper we address the problem of CP length adaptation and we propose practical bit-loading algorithms that include the CP adaptation.

Published in:

Power Line Communications and Its Applications, 2009. ISPLC 2009. IEEE International Symposium on

Date of Conference:

March 29 2009-April 1 2009