reviewACM Computing SurveysNov 1, 2013GREEN OA

From RSSI to CSI

ZYZheng YangZZZimu ZhouYLYunhao Liu

Tsinghua University · Hong Kong University of Science and Technology · +1 more institution

Indexed incrossref

Abstract

The spatial features of emitted wireless signals are the basis of location distinction and determination for wireless indoor localization. Available in mainstream wireless signal measurements, the Received Signal Strength Indicator (RSSI) has been adopted in vast indoor localization systems. However, it suffers from dramatic performance degradation in complex situations due to multipath fading and temporal dynamics. Break-through techniques resort to finer-grained wireless channel measurement than RSSI. Different from RSSI, the PHY layer power feature, channel response, is able to discriminate multipath characteristics, and thus holds the potential for the convergence of accurate and pervasive indoor…

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3

Topics & keywords

Topics
Keywords
  • Computer science
  • Multipath propagation
  • Channel state information
  • Wireless
  • Channel (broadcasting)
  • Ranging
  • Fading
  • Physical layer
UN Sustainable Development Goals
  • Reduced inequalities
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