6533b7d4fe1ef96bd1262788

RESEARCH PRODUCT

Perfomance of Ultra-Wideband OFDM Systems Using Adaptive MPSK Modulation over Nakagami-m Channels

R. Gonzalo LlanoJ.r. Pascual

subject

Computer scienceModulationbusiness.industryOrthogonal frequency-division multiplexingElectronic engineeringFadingLink adaptationNakagami distributionbusinessPower delay profileCommunication channelPhase-shift keyingComputer network

description

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.

yearjournalcountryeditionlanguage
2006-09-012006 3rd International Symposium on Wireless Communication Systems
https://doi.org/10.1109/iswcs.2006.4362377