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Differential Encoding for Real-Time Status Updates

Bhambay, Sanidhay and Poojary, Sudheer and Parag, Parimal (2017) Differential Encoding for Real-Time Status Updates. In: IEEE Wireless Communications and Networking Conference (WCNC), MAR 19-22, 2017, San Francisco, CA.

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Official URL: http://dx.doi.org/10.1109/WCNC.2017.7925904


For many applications in sensor networks and cyber-physical systems, receiving timely information is of utmost importance. In this article, we study data transmission schemes for a single source, sending periodic updates to a receiver through an unreliable channel. We consider two schemes that exploit the temporal correlation in the source messages, to send differential information to the receiver. Taking advantage of the receiver feedback in the first scheme, the source can decide between the differential and the actual information, to be sent at each transmission opportunity. Contrastingly, in the second scheme without any feedback, the source periodically sends the actual information, interspersed with differential messages. We observe that the differential encoding improves the timeliness performance, only if the receiver feedback is available.

Item Type: Conference Proceedings
Series.: IEEE Wireless Communications and Networking Conference
Additional Information: Copy right for this article belongs to the IEEE, 345 E 47TH ST, NEW YORK, NY 10017 USA
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 08 Jul 2017 08:51
Last Modified: 08 Jul 2017 08:51
URI: http://eprints.iisc.ac.in/id/eprint/57336

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