A High Precision Ranging Scheme for IEEE802.15.4a Chirp Spread Spectrum System

Na Young KIM  Sujin KIM  Youngok KIM  Joonhyuk KANG  

Publication
IEICE TRANSACTIONS on Communications   Vol.E92-B   No.3   pp.1057-1061
Publication Date: 2009/03/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.1057
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Sensing
Keyword: 
time of arrival,  ranging,  chirp spread spectrum,  

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Summary: 
This letter proposes a high precision ranging scheme based on the time of arrival estimation technique for the IEEE 802.15.4a chirp spread spectrum system. The proposed scheme consists of a linear channel impulse response estimation process with the zero forcing or minimum mean square error technique and the multipath delay estimation process with matrix pencil algorithm. The performance of the proposed scheme is compared with that of a well known MUSIC algorithm in terms of computational complexity and ranging precision. Simulation results demonstrate that the proposed scheme outperforms the MUSIC algorithm even though it has comparatively lower computational complexity.