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Power-Efficient Adaptive-and-Robust Link OFDM (PEARL-OFDM)

Award Information

Department of Defense
Award ID:
Program Year/Program:
2010 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
NAVY 09-218
Solicitation Number:
Small Business Information
Applied Radar, Inc.
315 Commerce Park Road North Kingstown, RI 02852-
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2010
Title: Power-Efficient Adaptive-and-Robust Link OFDM (PEARL-OFDM)
Agency / Branch: DOD / NAVY
Contract: N00039-10-C-0064
Award Amount: $69,999.00


Key obstacles to extending OFDM to wireless links and networks at high-frequencies and dynamic channels are inherent low performance to Doppler and power amplifiers operation with high back-off. Other significant obstacles are multipath and impulsive noise. PEARL-OFDM combines a layered architecture with technologies that mitigate such obstacles and enable full-range rates that maximizes connectivity, add unparallel robustness to Doppler over dynamic channels, has inherent robustness to narrowband fading and impulsive noise that drastically reduces "adaptation rates" and maximizes connectivity, and achieves near-optimum power conditioning of typical variable envelope signals enabling power amplifiers operation at saturation. PEARL provides a solid infrastructure for incremental addition of relevant capabilities including TRANSEC and LPD/LPI. For this, PEARL integrates two chirp OFDM technologies with different Truly Shift Orthogonal Codes (TSOC): one with randomly chirped codes and intrinsic TRANSEC characteristics dedicated to "variable rates" and another with linearly chirped codes and intrinsic robustness to Doppler. A novel Split-Phase Shift-Keying modulation overlay "makes' resulting OFDM signals suitable for saturated power amplifiers. Applied Radar proposes to design, develop and simulated the performance of the combined PEARL technologies during Phase I, and develop a software-define-radio testbed and demonstrate PEARL's performance over relevant military channels during Phase II.

Principal Investigator:

Marcos Bergamo
Technical Director

Business Contact:

Michael Sherry
Small Business Information at Submission:

Applied Radar, Inc.
210 Airport Street Quonset Point North Kingstown, RI 02852

EIN/Tax ID: 043438479
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No