A Constant Envelope OFDM Implementation on GNU Radio

Abstract

Distributed sensor networks often call for bursty, high data rate communications over long distances and fluctuating channels. A waveform for such a scenario would ideally be wideband to mitigate frequency selective fading, have data multiplexed into separate streams for high data rate, have long symbol times to mitigate multipath, and have a constant amplitude over time for non-linear amplification. These requirements are uniquely served by constant envelope OFDM. We describe the use-cases, theory, and successful implementation of such a waveform via the GNU radio framework on Ettus software-defined radios. We measure the bit error performance of the link as a function of channel quality and compare this performance to simulations of the link.

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Document Details

Document Type
Technical Report
Publication Date
Feb 02, 2015
Accession Number
ADA616562

Entities

People

  • Amos Ajo
  • Andrew Robertson
  • Frank Fu
  • Joe Molnar
  • Sastry Kompella

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Amplifiers
  • Amplitude Modulation
  • Channel Estimation
  • Data Rate
  • Demodulation
  • Demodulators
  • Detection
  • Detectors
  • Distortion
  • Frequency Domain
  • Modulation
  • Modulators
  • Orthogonal Frequency Division Multiplexing
  • Sensor Networks
  • Signal Processing
  • Waveforms
  • Wireless Sensor Networks

Fields of Study

  • Computer science

Readers

  • Radio communications and signal processing.
  • Systems Analysis and Design