2026-09-19T06:47:46Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/180142026-06-06T01:04:22Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Andrew Lippman.
Silber, Jeremy I. (Jeremy Isaac), 1980-
Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
2005-06-02T19:37:39Z
2005-06-02T19:37:39Z
2002
2002
http://hdl.handle.net/1721.1/18014
57205881
Thesis (M. Eng. and S.B.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
Includes bibliographical references (p. 59-61).
This thesis presents the design and implementation of a communication protocol that utilizes local cooperation among nodes to efficiently transfer data. Multi-hop routing in ad-hoc wireless networks realizes some scalability benefits over direct transmission by utilizing cooperation in the network layer, where all nodes act as routers to relay messages. Cooperative transmission takes this idea a step further, moving cooperation to the link layer, where nodes actually broadcast signals simultaneously to increase signal strength. Using network topology information derived from propagation delay measurement, nodes dynamically establish and update membership in rebroadcasting cells. Rebroadcast cells use constructively interfering modulation schemes to broadcast radio signals together, directing an amplified signal toward the intended recipient. This results in a link-layer routing system well suited to real-time data streaming in mobile, ad-hoc, wireless networks.
by Jeremy I. Silber.
M.Eng.
S.B.
61 p.
2889823 bytes
2895515 bytes
application/pdf
application/pdf
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.
http://dspace.mit.edu/handle/1721.1/7582
Electrical Engineering and Computer Science.
A cooperative communication protocol for wireless ad-hoc networks
Thesis
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