The effect of direct current (DC) offset on orthogonal frequency division multiplexing (OFDM) system with zero-padded (ZP) suffix is analysed in this paper. It is found that the ZP appended OFDM system suffers more from DC offset than a cyclic prefix inserted OFDM system and even demonstrates bit error flooring if the DC power exceeds a maximum allowed threshold. Simple algorithms are also proposed for DC offset estimation and compensation. The analysis is confirmed by simulation using multiband OFDM specification for ultra-wideband application.
|Title of host publication||2006 International Symposium on Communications and Information Technologies, ISCIT|
|Number of pages||4|
|Publication status||Published - 2006|
|Event||2006 International Symposium on Communications and Information Technologies, ISCIT - Bangkok, Thailand|
Duration: 18 Oct 2006 → 20 Oct 2006
|Other||2006 International Symposium on Communications and Information Technologies, ISCIT|
|Period||18/10/06 → 20/10/06|