An adaptive code position modulation scheme for wireless sensor networks

Author

Yuan, Yong ; Yang, Zongkai ; He, Jianhua ; Chen, Wenqing

Author_Institution

Dept. of Electron. & Inf. Eng., Huazhong Univ. of Sci. & Technol., Hubei, China

Volume

9

Issue

6

fYear

2005

fDate

6/1/2005 12:00:00 AM

Firstpage

481

Lastpage

483

Abstract

In this letter, an energy-efficient adaptive code position modulation scheme is proposed for wireless sensor networks to provide the relatively stable bit error ratio (BER) performance expected by the upper layers. The system is designed with focus on the adaptive control of transmission power, which is adjusted based on the measured power density of background noise. Interfaces among the modulation module, packet scheduling module and upper layer are provided for flexible adjustments to adapt to the background noise and deliver expected application quality. Simulations with signal processing worksystem (SPW) validate the effectiveness of the scheme.

Keywords

adaptive control; adaptive modulation; energy conservation; error statistics; power control; pulse code modulation; scheduling; signal processing; wireless sensor networks; BER; SPW; adaptive control; bit error ratio; energy-efficient adaptive code position modulation scheme; packet scheduling module; signal processing worksystem; transmission power control; wireless sensor network; Adaptive coding; Adaptive control; Background noise; Bit error rate; Density measurement; Energy efficiency; Modulation coding; Noise measurement; Power measurement; Wireless sensor networks;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2005.06003

Filename

1437344