Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article On the Evaluation of MB-OFDM UWB Interference Effects on a WiMAX Receiver | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID 414927 14 pages doi 2010 414927 Research Article On the Evaluation of MB-OFDM UWB Interference Effects on a WiMAX Receiver Eduardo Cano Alberto Rabbachin Detlef Fuehrer and Joaquim Fortuny Institute for the Protection and Security of the Citizen Joint Research Centre European Commission Ispra 21027 Varese Italy Correspondence should be addressed to Eduardo Cano Received 1 November 2009 Revised 20 April 2010 Accepted 6 July 2010 Academic Editor Yan Xin Copyright 2010 Eduardo Cano et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. The European Commission has recently adopted specific power spectral density masks for ultra wideband UWB devices with detect and avoid capabilities for coexistence with licensed standards. Under these regulations a novel approach for analyzing the UWB interference effects on the WiMAX downlink is provided in this paper by means of a novel theoretical computation of the bit error rate BER simulation results and measurements in a conducted modality. New analytical BER expressions for both uncoded and coded WiMAX systems impaired by a single multiband-OFDM MB-OFDM UWB interference signal are obtained in this paper for a Rayleigh fading channel. The BER is expressed in terms of the characteristic function of the interference signal. The maximum permissible interference levels and the signal-to-interference SIR values which allow the UWB interference effects to be considered negligible are estimated in this paper from simulation and measurement results. The analysis considers a WiMAX receiver operating at its minimum sensitivity level. The BER the symbol error probability SEP and the error vector magnitude EVM of the WiMAX link are .
