WO2021207748A3 - Methods and apparatus for channel reconstruction in intelligent surface aided communications - Google Patents

Methods and apparatus for channel reconstruction in intelligent surface aided communications Download PDF

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Publication number
WO2021207748A3
WO2021207748A3 PCT/US2021/045479 US2021045479W WO2021207748A3 WO 2021207748 A3 WO2021207748 A3 WO 2021207748A3 US 2021045479 W US2021045479 W US 2021045479W WO 2021207748 A3 WO2021207748 A3 WO 2021207748A3
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WIPO (PCT)
Prior art keywords
communication channel
information
irs
methods
pilot signal
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PCT/US2021/045479
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French (fr)
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WO2021207748A9 (en
WO2021207748A2 (en
Inventor
Narayan Prasad
Md Moin Uddin CHOWDHURY
Xiao-Feng Qi
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Futurewei Technologies, Inc.
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Application filed by Futurewei Technologies, Inc. filed Critical Futurewei Technologies, Inc.
Publication of WO2021207748A2 publication Critical patent/WO2021207748A2/en
Publication of WO2021207748A9 publication Critical patent/WO2021207748A9/en
Publication of WO2021207748A3 publication Critical patent/WO2021207748A3/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/024—Channel estimation channel estimation algorithms
    • H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/024—Channel estimation channel estimation algorithms
    • H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
    • H04L25/0248—Eigen-space methods

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  • Mobile Radio Communication Systems (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

Methods and apparatus are provided for reconstructing a communication channel that includes an intelligent reflecting surface (IRS)-aided reflective channel formed by an IRS and a first and second devices and a direct channel between the first and second devices. In a TDD system, the first device receives a pilot signal from the second device, generates sparsity information or subspace information of the communication channel, and reconstructs the communication channel based on the received pilot signal, the IRS' reflective pattern and the sparsity information or subspace information. In a FDD system, the second device receives a pilot signal from the first device in the communication channel, and sends signal strength information of the received pilot signal to the first device. The first device reconstructs the communication channel based on the signal strength information, the IRS' reflective pattern and subspace information of the communication channel.
PCT/US2021/045479 2020-08-13 2021-08-11 Methods and apparatus for channel reconstruction in intelligent surface aided communications WO2021207748A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202063065257P 2020-08-13 2020-08-13
US63/065,257 2020-08-13

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WO2021207748A2 WO2021207748A2 (en) 2021-10-14
WO2021207748A9 WO2021207748A9 (en) 2021-11-25
WO2021207748A3 true WO2021207748A3 (en) 2021-12-30

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PCT/US2021/045479 WO2021207748A2 (en) 2020-08-13 2021-08-11 Methods and apparatus for channel reconstruction in intelligent surface aided communications

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WO (1) WO2021207748A2 (en)

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