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 Leif W Hanlen

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Average citations per article0.93
Citation Count14
Publication count15
Publication years2006-2016
Available for download6
Average downloads per article181.17
Downloads (cumulative)1,087
Downloads (12 Months)126
Downloads (6 Weeks)16
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15 results found Export Results: bibtexendnoteacmrefcsv

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1 published by ACM
September 2016 ACM Transactions on Sensor Networks (TOSN): Volume 12 Issue 4, November 2016
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 11,   Downloads (12 Months): 161,   Downloads (Overall): 161

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In this article, we enable the coexistence of multiple wireless body area networks (BANs) using a finite repeated non-cooperative game for transmit power control. With no coordination amongst these personal sensor networks, the proposed game maximizes each network’s packet delivery ratio (PDR) at low transmit power. In this context, we ...
Keywords: game theory, distributed and collaborative signal processing, energy and resource management, Body area networks, interference mitigation

2 published by ACM
October 2015 SLAM '15: Proceedings of the Third Edition Workshop on Speech, Language & Audio in Multimedia
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 3,   Downloads (12 Months): 29,   Downloads (Overall): 85

Full text available: PDFPDF
During clinical handover, clinicians exchange information about the patients and the state of clinical management. To improve care safety and quality, both handover and its documentation have been standardized. Speech recognition and entity extraction provide a way to help health service providers to follow these standards by implementing the handover ...
Keywords: entity extraction, evaluation, speech recognition

3
September 2015 CLEF'15: Proceedings of the 6th International Conference on Experimental IR Meets Multilinguality, Multimodality, and Interaction - Volume 9283
Publisher: Springer-Verlag
Bibliometrics:
Citation Count: 1

This paper reports on the 3rd CLEFeHealth evaluation lab, which continues our evaluation resource building activities for the medical domain. In this edition of the lab, we focus on easing patients and nurses in authoring, understanding, and accessing eHealth information. The 2015 CLEFeHealth evaluation lab was structured into two tasks, ...
Keywords: Test-set generation, Text segmentation, Information retrieval, Medical informatics, Patient handoff/handover, Speech recognition, Information extraction, Text classification, Evaluation, Nursing records, Self-diagnosis

4
June 2014 Journal of Medical Systems: Volume 38 Issue 6, June 2014
Publisher: Plenum Press
Bibliometrics:
Citation Count: 0

A multi-disciplinary research team is undertaking a trial of speech-to-text (STT) technology for clinical handover management. Speech-to-text technologies allow for the capture of handover data from voice recordings using speech recognition software and systems. The text documents created from this system can be used together with traditional handover notes and ...
Keywords: Nursing, Speech recognition, Action research, Clinical handover, Usability

5 published by ACM
December 2013 ADCS '13: Proceedings of the 18th Australasian Document Computing Symposium
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 3,   Downloads (12 Months): 19,   Downloads (Overall): 83

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Nosocomial infections (NIs, any infection that a patient contracts in a healthcare institution) cost 100, 000 lives and five billion dollars per year for 300 million Americans alone. Surveillance in hospitals holds the potential of reducing NI rates by more than thirty per cent but performing this task by hand ...
Keywords: information storage and retrieval, nosocomial infections, medical records, medical informatics

6
November 2012 IEEE Transactions on Information Theory: Volume 58 Issue 11, November 2012
Publisher: IEEE Press
Bibliometrics:
Citation Count: 0

This paper gives expressions for the capacity of ergodic multiple-input multiple-output channels with finite dimensions, in which the channel gains have a correlated complex normal distribution and receivers experience independent Gaussian noise. The particular correlated normal distribution considered corresponds to flat Rayleigh fading with arbitrary transmit and receive correlation. Knowledge ...

7 published by ACM
August 2012 ACM Transactions on Embedded Computing Systems (TECS) - Special Section on CAPA'09, Special Section on WHS'09, and Special Section VCPSS' 09: Volume 11 Issue S2, August 2012
Publisher: ACM
Bibliometrics:
Citation Count: 1
Downloads (6 Weeks): 1,   Downloads (12 Months): 33,   Downloads (Overall): 237

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We investigate the impact of wireless channel temporal variations on the design of medium access control (MAC) protocols for body area networks (BANs). Our measurements-based channel model captures large and small time-scale signal correlations, giving an accurate picture of the signal variation, specifically, the deep fades which are the features ...
Keywords: channel modeling, Body area networks, medium access control (MAC) protocols

8
July 2010 IEEE Transactions on Information Theory: Volume 56 Issue 7, July 2010
Publisher: IEEE Press
Bibliometrics:
Citation Count: 0

A word-valued source Y = Y 1 , Y 2 ,... is discrete random process that is formed by sequentially encoding the symbols of a random process X = X 1 , X 2 ,... with codewords from a codebook C . These processes appear frequently in information theory (in ...
Keywords: asymptotic equipartition property (AEP), Asymptotic equipartition property (AEP), asymptotically mean stationary (AMS), ergodic theorem

9 published by ACM
October 2009 PM2HW2N '09: Proceedings of the 4th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
Publisher: ACM
Bibliometrics:
Citation Count: 1
Downloads (6 Weeks): 2,   Downloads (12 Months): 4,   Downloads (Overall): 318

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The energy consumed by radio transceivers is a significant factor limiting the lifetime of wireless sensor networks (WSNs). Maximizing WSN lifetime is the overall aim of this work, which proposes that optimal routing be defined with a network design that minimizes the energy consumed by transceivers. This definition of optimal ...
Keywords: node degree, wireless sensor network, transmission range

10
July 2009 UIC-ATC '09: Proceedings of the 2009 Symposia and Workshops on Ubiquitous, Autonomic and Trusted Computing
Publisher: IEEE Computer Society
Bibliometrics:
Citation Count: 0

Transmission links in wireless networks suffer from independent channel fading. Cooperative routing technology with diversity transmission can exploit the randomness of the wireless channel and efficiently improve the network performance by selecting multiple cooperative nodes to forward the data. This paper proposes a novel Multiple Shared Channels Cooperative (MSCC) routing ...
Keywords: routing protocol, cooperative transmission, diversity

11
June 2009 ICC'09: Proceedings of the 2009 IEEE international conference on Communications
Publisher: IEEE Press
Bibliometrics:
Citation Count: 0

We propose a low complexity noncoherent receiver operating at twice the symbol-rate for systems where each data symbol consists of multiple frames/chips. The receiver does not require explicit timing and channel estimation. It implements simple delayed-autocorrelation, followed by sampling at twice the symbol-rate. Simulation results show the receiver achieves performance ...

12
June 2009 ICC'09: Proceedings of the 2009 IEEE international conference on Communications
Publisher: IEEE Press
Bibliometrics:
Citation Count: 3

A characterization of the dynamic narrowband on-body to off-body area channel is presented based on real-time measurements of the time domain channel response at carrier frequencies near the 900MHz and 2400MHz Industrial, Scientific and Medical (ISM) bands. A statistical characterization is presented of received signal amplitude when the subject's body ...

13
April 2009 BodyNets '09: Proceedings of the Fourth International Conference on Body Area Networks
Publisher: ICST (Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering)
Bibliometrics:
Citation Count: 4
Downloads (6 Weeks): 2,   Downloads (12 Months): 8,   Downloads (Overall): 124

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We consider secure communication for Body-Area-Networks (BAN's). We examine the near-body radio channel of BAN's as a source of common randomness between two sensors. The movement of the subject and associated fading is used to hide a secure key from Eve. We examine recently approved radio channel models of the ...

14
December 2008 IEEE Transactions on Wireless Communications - Part 1: Volume 7 Issue 12, December 2008
Publisher: IEEE Press
Bibliometrics:
Citation Count: 0

A new differential unitary space-time code is presented that is a product of group diagonal matrices of different orders and a unitary Vandermonde matrix. Design is simplified through properties of the union bound on block error probability for the presented code. Detection is simplified via properties of the diagonal matrices ...
Keywords: Differential unitary space-time codes, multiple transmit antennas, simplified detection.

15
November 2006 IEEE Transactions on Wireless Communications: Volume 5 Issue 1, November 2006
Publisher: IEEE Press
Bibliometrics:
Citation Count: 3

This paper presents a novel physical-modeling approach to wireless systems with multiple antennas. The fundamental problem of modeling the communication channel is studied, where the channel consists of a finite spatial volume for transmitting, a finite spatial volume for reception, and an arbitrary set of reflective-scattering bodies. The number of ...



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