Open AccessMultipath cancellation by frequency diversity: a training‐free and analytical approach to accurate RSS ranging in ground‐deployed wireless sensor networks
Author(s) -
Zhang Cheng,
Qi Wangdong,
Liu Peng,
Wei Li
Publication year - 2014
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2013.3112
Subject(s) - ranging , rss , wireless , multipath propagation , computer science , diversity scheme , wireless sensor network , diversity (politics) , telecommunications , electronic engineering , computer network , engineering , fading , channel (broadcasting) , sociology , anthropology , operating system
Received signal strength (RSS) ranging in multipath environments suffers from two major drawbacks: laborious training and poor accuracy. Based on the observation that frequency‐squared weighted RSS is periodic with respect to carrier frequency, multipath cancellation by frequency diversity (MCFD) is proposed, which is a novel training‐free approach to RSS ranging that makes RSS measurements at multiple frequencies and combines them together to cancel out the multipath effect. Simulations and experimental results in two common scenarios for ground‐deployed wireless sensor networks show that MCFD outperforms traditional RSS ranging in accuracy.