A Low Overhead Feedback Scheme of Channel Covariance Matrix for Massive MIMO Systems

Youngrok Jang, Dongheon Lee, Sooyong Choi

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

Abstract

In this paper, we propose a feedback scheme of a channel covariance matrix with low overhead for massive multiple-input multiple-output systems. The proposed scheme decomposes the channel covariance matrix into the phase and amplitude parts. For the phase part, the element-wise uniform scalar quantization is performed. For the amplitude part, the following feedback information is generated: a bitmap which denotes a sign of difference between adjacent elements, the first value, an increment, and a decrement. To calculate the elements of the amplitude part, starting from the first value, when a bitmap is 1, the increment is added, otherwise the decrement is added. Simulation results show that the feedback overhead of the proposed scheme can be significantly reduced from 1.92% to 48.33% while the performance of mean square error can be maintained with that of the conventional scheme.

Original languageEnglish
Title of host publicationICUFN 2018 - 10th International Conference on Ubiquitous and Future Networks
PublisherIEEE Computer Society
Pages714-717
Number of pages4
Volume2018-July
ISBN (Print)9781538646465
DOIs
Publication statusPublished - 2018 Aug 14
Event10th International Conference on Ubiquitous and Future Networks, ICUFN 2018 - Prague, Czech Republic
Duration: 2018 Jul 32018 Jul 6

Other

Other10th International Conference on Ubiquitous and Future Networks, ICUFN 2018
CountryCzech Republic
CityPrague
Period18/7/318/7/6

Fingerprint

Covariance matrix
MIMO systems
Feedback
Mean square error

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Computer Science Applications
  • Hardware and Architecture

Cite this

Jang, Y., Lee, D., & Choi, S. (2018). A Low Overhead Feedback Scheme of Channel Covariance Matrix for Massive MIMO Systems. In ICUFN 2018 - 10th International Conference on Ubiquitous and Future Networks (Vol. 2018-July, pp. 714-717). [8436748] IEEE Computer Society. https://doi.org/10.1109/ICUFN.2018.8436748
Jang, Youngrok ; Lee, Dongheon ; Choi, Sooyong. / A Low Overhead Feedback Scheme of Channel Covariance Matrix for Massive MIMO Systems. ICUFN 2018 - 10th International Conference on Ubiquitous and Future Networks. Vol. 2018-July IEEE Computer Society, 2018. pp. 714-717
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title = "A Low Overhead Feedback Scheme of Channel Covariance Matrix for Massive MIMO Systems",
abstract = "In this paper, we propose a feedback scheme of a channel covariance matrix with low overhead for massive multiple-input multiple-output systems. The proposed scheme decomposes the channel covariance matrix into the phase and amplitude parts. For the phase part, the element-wise uniform scalar quantization is performed. For the amplitude part, the following feedback information is generated: a bitmap which denotes a sign of difference between adjacent elements, the first value, an increment, and a decrement. To calculate the elements of the amplitude part, starting from the first value, when a bitmap is 1, the increment is added, otherwise the decrement is added. Simulation results show that the feedback overhead of the proposed scheme can be significantly reduced from 1.92{\%} to 48.33{\%} while the performance of mean square error can be maintained with that of the conventional scheme.",
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Jang, Y, Lee, D & Choi, S 2018, A Low Overhead Feedback Scheme of Channel Covariance Matrix for Massive MIMO Systems. in ICUFN 2018 - 10th International Conference on Ubiquitous and Future Networks. vol. 2018-July, 8436748, IEEE Computer Society, pp. 714-717, 10th International Conference on Ubiquitous and Future Networks, ICUFN 2018, Prague, Czech Republic, 18/7/3. https://doi.org/10.1109/ICUFN.2018.8436748

A Low Overhead Feedback Scheme of Channel Covariance Matrix for Massive MIMO Systems. / Jang, Youngrok; Lee, Dongheon; Choi, Sooyong.

ICUFN 2018 - 10th International Conference on Ubiquitous and Future Networks. Vol. 2018-July IEEE Computer Society, 2018. p. 714-717 8436748.

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

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Jang Y, Lee D, Choi S. A Low Overhead Feedback Scheme of Channel Covariance Matrix for Massive MIMO Systems. In ICUFN 2018 - 10th International Conference on Ubiquitous and Future Networks. Vol. 2018-July. IEEE Computer Society. 2018. p. 714-717. 8436748 https://doi.org/10.1109/ICUFN.2018.8436748