Title :
Beacon design for GPS-Free wireless sensor networks
Author :
Guibin, Zhu ; Qiuhua, Li ; Sen, Bai ; Chunyan, You
Author_Institution :
Dept. of Inf. Eng., Chongqing Commun. Inst., Chongqing, China
Abstract :
A beacon for ranging in GPS-Free sensor networks is described, Combining the advantages of both narrowband and high distance estimation accuracy. The system uses the same frequency band for both communication and ranging purposes so that no separate dedicated ranging transceiver is needed. The special designed waveform of the signal is introduced, and the algorithms in the receiver module, especially the TOA estimation method, are described in detail. Simulation results show that the proposed beacon performs well under interference of AWGN.
Keywords :
AWGN; interference (signal); time-of-arrival estimation; transceivers; wireless sensor networks; AWGN interference; GPS-free wireless sensor networks; beacon design; dedicated ranging transceiver; high distance estimation accuracy; time-of-arrival estimation; AWGN; Estimation; Frequency estimation; Measurement uncertainty; Narrowband; Random access memory; TOA; beacon; sensor networks;
Conference_Titel :
Computer Application and System Modeling (ICCASM), 2010 International Conference on
Conference_Location :
Taiyuan
Print_ISBN :
978-1-4244-7235-2
Electronic_ISBN :
978-1-4244-7237-6
DOI :
10.1109/ICCASM.2010.5622599
