Investigations of noncoherent OOK based schemes with soft and hard decisions for WSNs

P. Zhang, F.M.J. Willems, Li Huang

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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Abstract

On-off keying (OOK) with noncoherent detection currently turns out to be very attractive for ultra-low power design for wireless sensor networks (WSNs) because of its simplicity. This paper investigates the capacity behavior of noncoherent OOK over AWGN channels in the low signal-to-noise ratio regime to demonstrate that energy autonomy can be achieved for WSNs. Our investigations show that noncoherent OOK modulation both with soft and hard decisions can achieve the Shannon limit for extremely asymmetric ‘on-off’ distributions. We also determine the wideband slope for both models here. According to our capacity study, pulse-position modulation (PPM) is suggested as channel coding scheme combined with OOK signaling, for both the soft and the hard case. A recommendation for a specific Reed-Solomon code in combination with PPM is provided based on performance evaluations.
Original languageEnglish
Title of host publicationProceedings of the 49th Annual Allerton Conference on Communication, Control, and Computing, 28-30 September 2011, Allerton House, Monticello, Illinois, U.S.A.
PublisherInstitute of Electrical and Electronics Engineers
Pages1702-1709
DOIs
Publication statusPublished - 2011

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