Title :
Perfomance of Ultra-Wideband OFDM Systems Using Adaptive MPSK Modulation over Nakagami-m Channels
Author :
Pascual, Juan Reig ; Gonzalo Llano, R.
Author_Institution :
Tech. Univ. of Valencia, Valencia
Abstract :
The physical layer proposal of the Multiband OFDM (MB-OFDM) Alliance to the TG3a Working Group of IEEE802.15 for ultra wideband (UWB) systems defines the use of a fixed QPSK modulation scheme in all subcarriers corresponding to 14 subbands of this proposal. In this paper, an adaptive MPSK digital modulation scheme has been proposed to improve the average capacity expressed in bits/symbol for the MB-OFDM. The channel fading has been modeled Nakagami-m distributed and the power delay profile (PDP) is assumed exponential. This average capacity has been evaluated for many channel conditions as a function of the average signal-to-noise ratio (SNR) and the fading parameter of the Nakagami-m distribution.
Keywords :
Nakagami channels; OFDM modulation; personal area networks; phase shift keying; ultra wideband communication; IEEE802.15; Nakagami-m channels; TG3a Working Group; adaptive MPSK modulation; adaptive modulation; channel fading; multiband OFDM alliance; power delay profile; ultra-wideband OFDM systems; ultrawideband system; Adaptive systems; Delay; Digital modulation; Fading; OFDM modulation; Physical layer; Power system modeling; Proposals; Quadrature phase shift keying; Ultra wideband technology; Adaptive modulation; Correlation; Nakagami-m distribution; OFDM; UWB;
Conference_Titel :
Wireless Communication Systems, 2006. ISWCS '06. 3rd International Symposium on
Conference_Location :
Valencia
Print_ISBN :
978-1-4244-0398-1
Electronic_ISBN :
978-1-4244-0398-1
DOI :
10.1109/ISWCS.2006.4362377
