Energy Efficient Wireless Multicasting

Author

Han, Tao ; Ansari, Nirwan

Author_Institution

Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA

Volume

15

Issue

6

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

620

Lastpage

622

Abstract

This letter proposes an energy-efficient wireless multicasting scheme in which the base station (BS) and the mobile users cooperate to reduce the total power consumption in wireless multicasting. Minimizing the power consumption under the scheme is an NP-hard problem. The gradient guided approximation algorithm is thus proposed to achieve low computational complexity. The proposed energy-efficient wireless multicasting scheme consumes less energy than other multicasting schemes without cooperation. The energy savings are validated through well designed simulations.

Keywords

approximation theory; computational complexity; cooperative communication; gradient methods; multicast communication; NP-hard problem; base station; computational complexity; cooperative communications; energy-efficient wireless multicasting scheme; gradient guided approximation algorithm; mobile users; power consumption reduction; Array signal processing; Power demand; Receiving antennas; Relays; Signal to noise ratio; Transmitting antennas; Wireless communication; Energy efficient; beamforming; cooperative communications; wireless multicasting;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2011.050311.110077

Filename

5764931