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Implementing Cooperative DiversityAntenna Arrays withCommodity Hardware

Andy Lippman

Πλήρης Εγγραφή

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Περίληψη

Cooperation among single-antennatransceivers and formation of distributed antennaarrays has recently attracted considerable interest.Such distributed antenna arrays are envisioned toprovide resistance to slow wireless fading andimprove performance of point-to-point wirelesscommunication across various dimensions.Despite the plethora of recently proposed theoreticalapproaches that promise gains due todiversity at the physical layer though cooperation(cooperative diversity), there is not much work inthe implementation of cooperative antenna arrayswith existing wireless transceivers. In this articlewe summarize the main challenges in implementationof cooperative diversity antenna arrays forrealistic wireless networks. We then present thebasic building blocks of a cooperative diversitydemonstration realized in the lab, utilizing commodityradio hardware. Our work sheds light ontothe synergies needed between the physical, link,and routing layers that significantly simplify theoverall network operation and decrease thetransceiver complexity in cooperative diversityantenna arrays, making feasible the utilization of(existing) commodity radio hardware.

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