Title :
Energy-optimal point-to-point wireless data communications
Author :
Erin, Anthony C. ; Asada, Harry H.
Author_Institution :
MIT, Cambridge, MA, USA
Abstract :
A new source coded modulation algorithm optimizing the energy efficiency in information transmission is presented. Wireless communication devices transmit nonuniform-probability messages using nonuniform-energy signal sequences. Hence, energy-optimal information transmission can be achieved by representing higher-probability messages by lower-energy signal sequences. In this paper, first this source coded modulation problem is formulated and an optimization algorithm for designing energy-optimal modulation systems is proposed. Then, a new sub-optimal source coded modulation algorithm achieving energy efficient information transmission at a reduced system complexity is introduced. Finally, extensions of this algorithm are investigated for improving the energy efficiency
Keywords :
computational complexity; data communication; energy conservation; modulation coding; optimisation; radio networks; source coding; energy efficiency; energy-optimal information transmission; energy-optimal modulation systems; energy-optimal wireless data communications; nonuniform-energy signal sequences; nonuniform-probability message transmission; optimization algorithm; point-to-point wireless data communications; reduced system complexity; sub-optimal source coded modulation algorithm; wireless communication devices; wireless sensor networks; Batteries; Constellation diagram; Data communication; Energy consumption; Energy efficiency; Energy resources; Modulation coding; Signal mapping; Wireless communication; Wireless sensor networks;
Conference_Titel :
Communications, 2001. ICC 2001. IEEE International Conference on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-7097-1
DOI :
10.1109/ICC.2001.936574
