A report proposes a method of cooperative modulation between (1) low-power radio transceivers associated with sensors geographically dispersed on a remote planet for relaying information between the sensors and an Earth station. The method, denoted node selection on orthogonal channels (NSOC), would make it unnecessary to include an additional, intermediate-power base station on the planet to effect long-distance communication with the orbiting transceiver.

This work was done by Kevin Quirk, Meera Srinivasan, and Jonathan Agre of Caltech for NASA's Jet Propulsion Laboratory. To obtain a copy of the report, "Cooperative Communication Using Node Selection, Orthogonal Channels," access the Technical Support Package (TSP) free on-line at www.nasatech.com/tsp  under the Electronics & Computers category.

NPO-30177


This Brief includes a Technical Support Package (TSP).
Cooperative Communication by Low-Power Radio Transmitters

(reference NPO-30177) is currently available for download from the TSP library.

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This article first appeared in the December, 2001 issue of NASA Tech Briefs Magazine.

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