An empirical study of analog channel feedback

Wei Liang Shen, Ching-Ju Lin, Ming Syan Chen

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

Abstract

Exchanging the channel state information (CSI) in a multiuser WLAN is considered an extremely expensive overhead. A possible solution to reduce the overhead is to notify the analog value of the CSI, which is also known as analog channel feedback. It however only allows nodes to overhear an imperfect channel information. While some previous studies have theoretically analyzed the performance of analog channel feedback, this work aims at addressing issues of realizing it in practice and empirically demonstrating its effectiveness. Our prototype implementation using USRP-N200 shows that analog channel feedback produces a small error comparable to that of estimating CSI using reciprocity, but however can be applied to more general scenarios.

Original languageEnglish
Title of host publicationSIGCOMM 2013 - Proceedings of the ACM SIGCOMM 2013 Conference on Applications, Technologies, Architectures, and Protocols for Computer Communication
Pages529-530
Number of pages2
DOIs
StatePublished - 5 Sep 2013
EventACM SIGCOMM 2013 Conference on Applications, Technologies, Architectures, and Protocols for Computer Communication, SIGCOMM 2013 - Hong Kong, China
Duration: 12 Aug 201316 Aug 2013

Publication series

NameSIGCOMM 2013 - Proceedings of the ACM SIGCOMM 2013 Conference on Applications, Technologies, Architectures, and Protocols for Computer Communication

Conference

ConferenceACM SIGCOMM 2013 Conference on Applications, Technologies, Architectures, and Protocols for Computer Communication, SIGCOMM 2013
CountryChina
CityHong Kong
Period12/08/1316/08/13

Keywords

  • analog channel feedback
  • mimo

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  • Cite this

    Shen, W. L., Lin, C-J., & Chen, M. S. (2013). An empirical study of analog channel feedback. In SIGCOMM 2013 - Proceedings of the ACM SIGCOMM 2013 Conference on Applications, Technologies, Architectures, and Protocols for Computer Communication (pp. 529-530). (SIGCOMM 2013 - Proceedings of the ACM SIGCOMM 2013 Conference on Applications, Technologies, Architectures, and Protocols for Computer Communication). https://doi.org/10.1145/2486001.2491716