Comparative performance of OM-OFDM in broadband systems
University of Pretoria, Department of Electrical, Electronic and Computer Engineering, Pretoria 0002, South Africa
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 3.44dB 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. © 2012 The Institution of Engineering and Technology.
Broadband systems; Frequency-selective fading channels; OFDM signal; OFDM transmission; Offset modulation; Peak to average power ratio; Power performance; Electronics engineering; Technology; Frequency selective fading