Experimental Study on Channel Reciprocity in Wireless Key Generation

Junqing Zhang, Roger Woods, Trung Q. Duong, Alan Marshall, Yuan Ding

Research output: Chapter in Book/Report/Conference proceedingConference contribution

23 Citations (Scopus)
460 Downloads (Pure)

Abstract

Key generation from wireless channels is a promising alternative to public key cryptography for the establishment of cryptographic keys. It is the first paper to experimentally study the channel reciprocity principle of key generation, through investigating and quantifying channel measurements' cross-correlation relationship affected by noise and non-simultaneous measurements. Channel measurements, both received signal strength and channel state information, are collected from a real experimental platform using the wireless open access research platform (WARP) in a multipath office room. We found that in a slow fading channel (e.g., with a coherence time of about 50~ms), the channel cross-correlation is impacted greatly by noise but little by non-simultaneous measurements with a small sampling time difference (e.g., 0.06 ms). The resolution of the sampling time difference can be satisfied by wireless systems such as IEEE 802.11 to maintain an acceptable cross-correlation coefficient without affecting the bandwidth and communication efficiency.
Original languageEnglish
Title of host publication2016 IEEE 17th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
Pages1-5
Number of pages5
DOIs
Publication statusPublished - 11 Aug 2016
EventThe 17th IEEE International workshop on Signal Processing Advances in Wireless Communications - Edinburgh, United Kingdom
Duration: 03 Jul 201606 Jul 2016
http://www.spawc2016.org.uk/

Conference

ConferenceThe 17th IEEE International workshop on Signal Processing Advances in Wireless Communications
Abbreviated titleSPAWC
CountryUnited Kingdom
CityEdinburgh
Period03/07/201606/07/2016
Internet address

Keywords

  • Physical layer security
  • Key generation
  • channel reciprocity

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