Title:
ONE BIT SMALL SCALE FADING TRACING
Document Type and Number:
WIPO Patent Application WO/2021/028612
Kind Code:
A3
Abstract:
A method may include collecting, by a user equipment, channel coefficients of a communication channel in a frequency and time domain. The method may also include creating a channel matrix based on the collected channel coefficients. The method may further include performing a two-dimensional Fast Fourier Transform to the channel matrix. The method may also include transforming the channel matrix into a delay-doppler domain. The method may further include reporting, based on a first periodicity, one or more positions of one or more taps in the delay-doppler plane, and an amplitude and a phase of the one or more taps based on a first periodicity. The method may also include reporting, based on a second periodicity, a differential tap amplitude and a differential tap phase with 1 bit for the differential tap amplitude and 1 bit for the differential tap phase.
Inventors:
MAO XIAOMAO (FR)
Application Number:
PCT/FI2020/050447
Publication Date:
April 08, 2021
Filing Date:
June 24, 2020
Export Citation:
Assignee:
NOKIA TECHNOLOGIES OY (FI)
International Classes:
H04B7/0417; H04L25/02; H04W24/08
Other References:
MURALI, K.R. ET AL.: "On OTFS modulation for high-Doppler fading channels", 2018 INFORMATION THEORY AND APPLICATIONS WORKSHOP, 11 February 2018 (2018-02-11), San Diego, CA, USA, pages 10, XP033425555, DOI: 10.1109/ITA.2018.8503182
RAVITEJA, P ET AL.: "Embedded pilot-aided channel estimation for OTFS in delay-Doppler channels", IEEE TRANS. ON VEHICULAR TECHNOLOGY, vol. 68, no. 5, May 2019 (2019-05-01), pages 4906 - 4917, XP011725863, DOI: 10.1109/TVT.2019.2906357
AHMED, R ET AL.: "Overhead Reduction of NR Type II CSI for NR Release 16", COMPUTING AND COMMUNICATION WORKSHOP AND CONFERENCE (CCWC), 10TH ANNUAL CONFERENCE, 24 April 2000 (2000-04-24), Vienna, Austria, pages 5
HADANI, R. ET AL.: "OTFS: a new generation of modulation addressing the challenges of 5G", ARXIV.ORG, 7 February 2018 (2018-02-07), Cornell University, Computer Science, Information Theory, XP081219775, Retrieved from the Internet [retrieved on 20210223]
RAVITEJA, P ET AL.: "Embedded pilot-aided channel estimation for OTFS in delay-Doppler channels", IEEE TRANS. ON VEHICULAR TECHNOLOGY, vol. 68, no. 5, May 2019 (2019-05-01), pages 4906 - 4917, XP011725863, DOI: 10.1109/TVT.2019.2906357
AHMED, R ET AL.: "Overhead Reduction of NR Type II CSI for NR Release 16", COMPUTING AND COMMUNICATION WORKSHOP AND CONFERENCE (CCWC), 10TH ANNUAL CONFERENCE, 24 April 2000 (2000-04-24), Vienna, Austria, pages 5
HADANI, R. ET AL.: "OTFS: a new generation of modulation addressing the challenges of 5G", ARXIV.ORG, 7 February 2018 (2018-02-07), Cornell University, Computer Science, Information Theory, XP081219775, Retrieved from the Internet
Attorney, Agent or Firm:
NOKIA TECHNOLOGIES OY et al. (FI)
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