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Progressive In-Network Reliability for Wireless Sensor Networks. A novel data reliability framework that progressively recovers errors without fast depleting individual sensors using capacity approaching LDPC codes

Автор:   Saad Q.
мягкая обложка
100 страниц
2009 год
Издательство:   Книга по Требованию
Цена:
2005 руб
отсутсвует
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способы доставки и оплаты
Описание:This monolog considers the case of reliable data transmission in energy constrained Wireless Sensor Networks (WSNs). We use iteratively decodable Low Density Parity Check (LDPC) codes in order to illustrate the efficiency of the proposed architecture. We propose a setup that progressively provides reliability as information traverses the multi-hop wireless sensor network. The proposed OPERA setup optimally distributes the decoding iteration budget over the entire network with minimal energy expenditure. However, low rate channel coding on end-to-end basis puts a considerable burden in terms of transmit energy on resource constrained sensor nodes. We apply the OPERA framework to both still images as well as video streams and present an architecture for reliably transmitting video in WSNs. Precisely, we propose an Optimal Progressive Error Recovery Algorithm (OPERA) under which, individual intermediate sensors that are relaying data toward the base station, partially and optimally channel-decode the incoming packets as data reaches the final destination. Low rate channel coding can increase reliability and eliminate the need of costly retransmissions of sensor data.


Orthomol Immun Junior Сила иммунитета на страже Вашего ребенка Orthomol Immun Junior Сила иммунитета на страже Вашего ребенка

2990 руб
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Умная толпа

Twist, «Native Networking Trends: Wireless Broadband Networks», Digital Beat, 20 September 2001, « DigitalBeat/db092001.html» (23 February 2002). 41. Robert X. Cringely, «The 100 Mile-Per-Gallon Carburetor: How Ultra Wide Band May (or May Not) Change the World», The Pulpit, 24 January 2002, « html» (29 January 2002). 42. Tim Shepard, «Decentralized Channel Management in Scalable Multihop Spread-Spectrum Packet Radio Networks» (Ph. D. diss., MIT, 1995), «ftp://ftp.lcs.mitedu/pub/lcs-pubs/tr.outbox/MIT-LCS-TR-670.ps.qz» (23 February 2002). 43. W. Brian Arthur, Increasing Returns and Path Dependence in the Economy (Ann Arbor: University of Michigan Press, 1994). 44. «A Radio on Every Chip in 10 Years», The Register, 4 March 2002, « (6 March 2002). 45. Steve Gillmor, «Man in the White Suit», InfoWorld.com, 4 January 2002, « 020107opcurve.xml» (24 January 2002). 46. «MeshNetworks Receives Experimental License from FCC Enabling Demonstration of its Mobile Broadband Network Technology», « release_01_09_02.htm» (23 February 2002). 47. «Nokia Introduces First-of-Its-Kind Wireless Broadband Solution at SUPERCOMM 2000», 7 June 2000, « PR/200006/782980_ 5.html» (29 January 2002). 48 ...»

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