skip to main content
poster

An empirical study of analog channel feedback

Published: 27 August 2013 Publication History

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.

References

[1]
S. Gollakota, S. D. Perli, and D. Katabi. Interference Alignment and Cancellation. In ACM SIGCOMM, 2009.
[2]
K. C.-J. Lin, S. Gollakota, and D. Katabi. Random Access Heterogeneous MIMO Networks. In ACM SIGCOMM, 2011.
[3]
T. Marzetta and B. Hochwald. Fast Transfer of Channel State Information in Wireless Systems. Signal Processing, IEEE Transactions on, 54(4):1268--1278, Apr. 2006.

Index Terms

  1. An empirical study of analog channel feedback

    Recommendations

    Comments

    Information & Contributors

    Information

    Published In

    cover image ACM SIGCOMM Computer Communication Review
    ACM SIGCOMM Computer Communication Review  Volume 43, Issue 4
    October 2013
    595 pages
    ISSN:0146-4833
    DOI:10.1145/2534169
    Issue’s Table of Contents
    • cover image ACM Conferences
      SIGCOMM '13: Proceedings of the ACM SIGCOMM 2013 conference on SIGCOMM
      August 2013
      580 pages
      ISBN:9781450320566
      DOI:10.1145/2486001
    Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for third-party components of this work must be honored. For all other uses, contact the Owner/Author.

    Publisher

    Association for Computing Machinery

    New York, NY, United States

    Publication History

    Published: 27 August 2013
    Published in SIGCOMM-CCR Volume 43, Issue 4

    Check for updates

    Author Tags

    1. analog channel feedback
    2. mimo

    Qualifiers

    • Poster

    Contributors

    Other Metrics

    Bibliometrics & Citations

    Bibliometrics

    Article Metrics

    • 0
      Total Citations
    • 235
      Total Downloads
    • Downloads (Last 12 months)36
    • Downloads (Last 6 weeks)11
    Reflects downloads up to 20 Feb 2025

    Other Metrics

    Citations

    View Options

    Login options

    View options

    PDF

    View or Download as a PDF file.

    PDF

    eReader

    View online with eReader.

    eReader

    Figures

    Tables

    Media

    Share

    Share

    Share this Publication link

    Share on social media