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Throughput Analysis of a Cooperative ARQ Scheme.pdfThroughput Analysis of a Cooperative ARQ Scheme in the Presence of Hidden and Exposed Terminals266.78 kBAdobe PDFThumbnail
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Citació: Alonso-Zarate, J. [et al.]. Throughput analysis of a cooperative ARQ scheme in the presence of hidden and exposed terminals. "Mobile networks and applications", 2012, vol. 17, núm. 2, p. 258-266.
Títol: Throughput analysis of a cooperative ARQ scheme in the presence of hidden and exposed terminals
Autor: Alonso-Zarate, J.; Alonso Zárate, Luis Gonzaga Veure Producció científica UPC; Kormentzas, Georgios Veure Producció científica UPC; Tafazolli, Rahim; Verikoukis, C.
Data: 2012
Tipus de document: Article
Resum: Cooperative Automatic Retransmission Request (C-ARQ) schemes exploit the broadcast nature of the radio channel by allowing those users which overhear a transmission to act as spontaneous relays when a packet has been received with errors at destination. Transmission takes place in two phases. First, the source transmits to the destination. In the case of error, retransmissions are then executed by the relays, providing the system with cooperative diversity. In this paper we analyze how the addition of these relays to the communication modifies the well-known hidden and exposed terminal problems associated to any medium access control protocol based on carrier sensing. This work is focused on Carrier Sensing Multiple Access (CSMA) protocols, such as the one defined in the IEEE 802.11 Standard. The theoretical study presented in this paper has been supported by computer-based simulations.
ISSN: 1383-469X
URI: http://hdl.handle.net/2117/16496
DOI: 10.1007/s11036-011-0338-y
Versió de l'editor: http://www.springerlink.com/openurl.asp?genre=article&id=doi:10.1007/s11036-011-0338-y
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