NDLI: Impact of electromagnetic noise from PCs on performance of multiband-OFDM UWB systems

Content Provider	IEEE Xplore Digital Library
Author	Matsumoto, Y. Murakami, T. Fujii, K. Sugiura, A.
Copyright Year	1975
Abstract	Since personal computers (PCs) radiate radio noise in a wide frequency range, wireless devices added to PCs may be subjected to interference from PC noise. Investigations were carried out on what impact clock harmonics radiating from a PC had on the bit error rate (BER) of multiband OFDM (MB-OFDM) UWB devices. The results indicated that clock harmonics cause considerable BER degradation in UWB devices especially those operated in high-bitrate communication modes. It was also found that the frequency modulation of a PC clock signal, i.e., so-called spread spectrum clocking (SSC), had no effect on mitigating BER degradation, even though SSC techniques are commonly used in PCs for reducing the power spectral density of radiated noise. Discussions were further made on a possible scheme of mitigating interference by using Viterbi decoding with channel state information (CSI) that is obtained by estimating the instantaneous frequency of clock signal directly provided by the PC to the UWB device.
Sponsorship	IEEE Consumer Electronics Society
File Size	648145
File Format	PDF
ISSN	00983063
Volume Number	56
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electromagnetic interference Personal communication networks Clocks Bit error rate Degradation Frequency estimation Electromagnetic radiation Microcomputers Electromagnetic radiative interference Radiofrequency interference EMI, OFDM, platform interference, spread spectrum clock, UWB
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Media Technology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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