Accession Number:

ADA616562

Title:

A Constant Envelope OFDM Implementation on GNU Radio

Descriptive Note:

Memorandum rept.

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC NETWORKS AND COMMUNICATION SYSTEMS BRANCH

Personal Author(s):

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

Report Date:

2015-02-02

Pagination or Media Count:

25.0

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.

Descriptors:

• *FREQUENCY DIVISION MULTIPLEXING
• AMPLIFICATION
• BANDWIDTH
• BURST TRANSMISSION
• DATA LINKS
• DEMODULATION
• EQUALIZATION
• FREQUENCY DOMAIN
• HIGH RATE
• MULTIPATH TRANSMISSION
• ORTHOGONALITY
• PHASE MODULATION
• RADIO SIGNALS
• RADIO TELEMETRY
• SYNCHRONISM
• WAVE PACKETS
• WAVEFORMS

Subject Categories:

• Telemetry
• Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE