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Andrew Lippman lip@mit October, 2004

Viral Radio. Andrew Lippman lip@mit.edu October, 2004. Viral Innovation. Scalable Incremental Contributory. Viral systems are innovative through modularity and distribution of capability -- the intelligence is at the ends e.g.: Fax machines, Internet. Viral Radio.

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Andrew Lippman lip@mit October, 2004

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  1. Viral Radio Andrew Lippman lip@mit.edu October, 2004

  2. Viral Innovation Scalable Incremental Contributory Viral systems are innovative through modularity and distribution of capability -- the intelligence is at the ends e.g.: Fax machines, Internet

  3. Viral Radio Open systems such as PCs gain capacity with more units, traditional communications systems divide fixed capacity among elements. Can we make communications systems (telephones, networks) that are viral and economic? Social Context

  4. Network Co-generation Delivers realtime information by using intelligent RF Scales adhoc networks by limiting radiation to nodes in between two parties

  5. Radio Magic Radios costing less than radio waves (Breadcrumbs) There are no receivers (Receiving costs more than transmitting) Collaboration makes it work

  6. Cooperative Propagation • Wireless = Broadcast (it makes it hard… it makes it challenging…) Direct Multi-hop Cooperative (Special case of co-op) “Wireless Broadcast Advantage” Antenna Sharing: exploits observation of a common “property” across different users (antennas) in space… Our contribution: distributed, “adaptive” algorithmsapplicable in practice… Aggelos Bletsas, 2004

  7. Propagation Space Closer is not always the better… fading is not always harmful (MIMO results)… Instantaneous wireless channel conditions matter (not only average) - Algorithms should adapt to wireless propagation “instantaneously” (within channel coherence time) - no need for topology estimation… Aggelos Bletsas, 2004

  8. RTS CTS Test Case Method of distributed timers = opportunistic relaying Mapping channel conditions to time! Exploiting RTS/CTS packets of MAC and reciprocity…best path = relay that expires first… Collision probability depends on λ (user defined)… Aggelos Bletsas, 2004

  9. Local Space and Time Antenna sharing for cooperative position estimation Estimate your location relatively to neighbors with “good” signal paths (high SNR measurements). Prior art found in protein structure determination(“molecular distance geometry problem”)… Aggelos Bletsas, 2004

  10. Radio Magic

  11. Radio Magic

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