Title :
Comparative performance of OM-OFDM in broadband systems
Author :
Dhuness, K. ; Maharaj, B.T.
Author_Institution :
Dept. of Electr., Electron. & Comput. Eng., Univ. of Pretoria, Pretoria, South Africa
Abstract :
A method called offset modulation (OM-OFDM) is proposed to control the peak-to-average power ratio (PAPR) of an OFDM signal. This reported work demonstrates the significant modulation, structural and performance differences between an OM-OFDM and CE-OFDM method. The OM-OFDM method in addition is able to accurately control the PAPR of a transmission for a targeted BER, which is currently not possible with CE-OFDM. By using a power performance decision metric (D), the OM-OFDM method is shown to offer a 34 and 3.44 dB net power performance gain (at a BER of 10-4) when compared to a CE-OFDM and traditional OFDM transmission for frequency selective fading channel conditions, respectively.
Keywords :
OFDM modulation; broadband networks; error statistics; fading channels; BER; CE-OFDM method; OFDM signal; OM-OFDM; broadband systems; decision metric; frequency selective fading channel; net power performance gain; offset modulation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2011.2005
