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Superposed CDMA relay cooperation in wireless sensor networks

Yizhi Yin 1, 2 Karine Amis Cavalec 3, 1 Ramesh Pyndiah 3, 1 
Abstract : This paper adresses the problem of cooperation application in an existing non-cooperative wireless sensor network. Sensors are low-energy and low-data rate devices. They transmit small independent individually-encoded information packets to the same destination. The cooperation scheme is based on a product code distributed among sources and relays and turbodecoded at the destination. We propose a system where a relay code division multiple access-based transmission is superposed with the sources time division multiple access-scheduled transmissions. A relay interference cancelation algorithm is defined and the whole system is simulated considering source-destination and relaydestination AWGN channels. The source-relay channel is assumed error-free. An optimized energy allocation between the sources and the relay is extracted from simulations.
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https://hal.archives-ouvertes.fr/hal-00960166
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Submitted on : Friday, September 23, 2022 - 3:12:19 PM
Last modification on : Friday, September 23, 2022 - 3:51:55 PM

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Yizhi Yin, Karine Amis Cavalec, Ramesh Pyndiah. Superposed CDMA relay cooperation in wireless sensor networks. VTC 2013-Spring: IEEE 77th Vehicular Technology Conference, Jun 2013, Dresden, Germany. pp.1-5, ⟨10.1109/VTCSpring.2013.6692774⟩. ⟨hal-00960166⟩

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