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Instrumentation & Measurement Magazine, IEEE

Issue 2 • Date April 2015

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Displaying Results 1 - 15 of 15
  • IEEE Instrumentation & Measurement Magazine - Front cover

    Publication Year: 2015 , Page(s): c1
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  • Table of Contents

    Publication Year: 2015 , Page(s): 2
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  • Hello? [Editorial]

    Publication Year: 2015 , Page(s): 3
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  • Instrumentation and Measurement in Communication Systems

    Publication Year: 2015 , Page(s): 4 - 10
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    The demand for ubiquitous connectivity is challenging the physical constraints placed upon current communication systems. In addition, customers expect higher and higher quality from their service providers. Consequently, equipment manufacturers are required to produce systems that can be quickly deployed and provide bandwidth-efficient communications. To meet this goal, instrumentation and measurements play a fundamental and invaluable role. View full abstract»

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  • Signal identification for emerging intelligent radios: classical problems and new challenges

    Publication Year: 2015 , Page(s): 11 - 18
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    Signal identification, which initially found applications in electronic warfare and spectrum monitoring and surveillance, has been recently considered for commercial communications in the context of software defined and cognitive radios. In this article, I present a snapshot of the status of signal identification algorithms, starting from a general description of maximum likelihood (ML) and feature based (FB) approaches to a more detailed discussion of a practical methodology using cyclostationarity-based features. I discuss the cyclostationarity-based features of various signals and the criteria of decision for their identification, while considering classical problems of identifying single carrier linearly digitally (SCLD) modulated signals, as well as new challenges posed by the identification of orthogonal frequency division multiplexing (OFDM), SC frequency domain equalization (SC-FDE), and multiple-transmit antenna signals. I conclude the article with remarks on practical solutions to signal identification and open research issues. View full abstract»

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  • Testing software defined and cognitive radios using software defined synthetic instruments

    Publication Year: 2015 , Page(s): 19 - 24
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    Software Defined Radios (SDRs) are wireless communication systems in which many of the radios' important functional elements, including filtering, frequency translation and modulation/demodulation, are implemented in software via Digital Signal Processing (DSP) techniques using embedded processors and Field Programmable Gate Arrays (FPGA) as described by Harris and Lowdermilk in 2010 [1]. SDRs differ from traditional radios that typically employ custom silicon to implement such functions. SDRs exhibit several advantages over traditional radios, including re-configurability and reduced development costs and time-to-market since they do not require custom silicon. SDRs also enjoy long life cycles, since they can readily be adapted to meet future needs. Cognitive Radios (CRs) are a special class of SDRs that employ adaptive DSP technologies to implement spectral management. This enables CRs to deliver improved effective bandwidth, quality of service, and enhanced security, which have become increasingly important in modern commercial and military wireless communications applications. View full abstract»

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  • Women in Engineering

    Publication Year: 2015 , Page(s): 25
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  • Ultra-wideband instantaneous frequency estimation

    Publication Year: 2015 , Page(s): 26 - 30
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    Determining the instantaneous frequency of a signal is required for many applications ranging from radio astronomy to defense applications. Unfortunately, the scan rate is often too long over a wideband spectrum compared to the time scale of signals of interest. We present an instantaneous frequency measurement receiver, which allows for simultaneous measurement of multiple frequencies and amplitudes across an ultra-wide instantaneous bandwidth. Powered by the photonic time stretch A/D converter, the high effective sampling throughput of the system provides high temporal resolution and improvement of frequency and amplitude estimation capability through advanced signal processing. This flexible system has adjustable instantaneous bandwidth and frequency resolution, an ultrafast sweep time, and reduced hardware complexity compared to other instantaneous frequency measurement systems. View full abstract»

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  • Nature is Exact!

    Publication Year: 2015 , Page(s): 31 - 32
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  • A cloud-based approach to spectrum monitoring

    Publication Year: 2015 , Page(s): 33 - 37
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    Thousands of wireless communication systems have been fielded, with hundreds more under development. The RF spectrum has growing economic value to consumers, businesses, and governments worldwide. This has generated such a demand for wireless bandwidth that spectrum allocation, the existing primary method of spectrum management, is becoming increasingly inadequate. In this paper, we briefly summarize the response to the U.S. National Telecommunications and Information Agency's Notice of Inquiry concerning a Spectrum Monitoring Pilot Program and present a cloud-based system-of-systems for spectrum monitoring based on the response to the Inquiry. We describe the interface to the cloud as an important enabler and propose a solution that allows ontology descriptions to be used for both spectrum management and monitoring. These ontology descriptions support the use of semantic techniques such as queries, responses, and reasoning. View full abstract»

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  • Doctoral graduation!

    Publication Year: 2015 , Page(s): 38 - 40
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  • The IEEE IMS Chapter Nanjing/Shanghai/Wuhan Jt. sections

    Publication Year: 2015 , Page(s): 41
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  • Software defined network traffic measurement: Current trends and challenges

    Publication Year: 2015 , Page(s): 42 - 50
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    Next generation networks such as Software Defined Networks (SDN) must support the integration of new paradigms of service offerings such as virtual cloud computing, big data applications, data centers services, and rich multimedia content. Operators of next generation SDNs are responsible for configuring policies that employ traffic monitoring tools and measurement mechanisms to detect and react to a wide range of network events and applications. In this article, we take a look at traffic measurement methods in SDNs, cover their strengths and weaknesses, point to open issues, and remaining future challenges. View full abstract»

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  • The graduate fellowship grant award [Society News]

    Publication Year: 2015 , Page(s): 51 - 53
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  • New Products

    Publication Year: 2015 , Page(s): 54 - 58
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Aims & Scope

IEEE Instrumentation and Measurement Magazine contains applications-oriented and tutorial articles on topics in the broadly based areas of instrumentation system design and measurement techniques.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Prof. Wendy Van Moer

wendy.w.vanmoer@ieee.org
IandMMagazineEIC@ieee.org