Work

Cross-layer energy optimization under image quality constraints for wireless image transmissions

Year: 2012

Type: conference-paper

Abstract: Wireless image transmission is critical in many applications, such as surveillance and environment monitoring. In order to make the best use of the limited energy of the battery-operated cameras, while satisfying the application-level image quality constraints, cross-layer design is critical. In this paper, we develop an image transmission model that allows the application layer (e.g., the user) to specify an image quality constraint, and optimizes the lower layer parameters of transmit power and packet length, to minimize the energy dissipation in image transmission over a given distance. The effectiveness of this approach is evaluated by applying the proposed energy optimization to a reference ZigBee system and a WiFi system, and also by comparing to an energy optimization study that does not consider any image quality constraint. Evaluations show that our scheme outperforms the default settings of the investigated commercial devices and saves a significant amount of energy at middle-to-large transmission distances.

Source: International Wireless Communications and Mobile Computing Conference (IWCMC)

DOI: 10.1109/iwcmc.2012.6314342

Authors: Na Yang, Ilker Demirkol, Wendi Heinzelman

Institutions: University of Rochester, Universitat Politècnica de Catalunya

Language: English

Topic: Energy Efficient Wireless Sensor Networks

Subfield: Computer Networks and Communications

Field: Computer Science

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: green

Funder: Eunice Kennedy Shriver National Institute of Child Health and Human Development