Method and apparatus for virtualizing antenna in multi-antenna system, and method and apparatus for transmitting and receiving signal using the same

Patent metadata

Field	Value
Publication number	US-2016337017-A1
Application number	US-201615153887-A
Country	US
Kind code	A1
Filing date	May 13, 2016
Priority date	May 15, 2015
Publication date	Nov 17, 2016
Grant date	—

Abstract

The transmitter maps an antenna port to a logical antenna port through a first virtualization. The transmitter maps the logical antenna port to a transceiver unit (TXRU) through a first operation. The transmitter maps the TXRU to a logical TXRU through a second operation. The transmitter maps the logical TXRU to a physical antenna element through a second virtualization.

First claim

What is claimed is:

1 . A signal transmission method of a transmitter, comprising:
mapping an antenna port to a logical antenna port through a first virtualization; mapping the logical antenna port to a transceiver unit (TXRU) through a first operation; mapping the TXRU to a logical TXRU through a second operation; and mapping the logical TXRU to a physical antenna element through a second virtualization, wherein a first complex matrix corresponding to the first operation is a unitary matrix of which a size of each element is 1 and is an inverse matrix of a second complex matrix corresponding to the second operation.

2 . The signal transmission method of claim 1 , wherein:
the logical antenna port is a physical path for a result of the first virtualization to be an input for the first operation; and the logical TXRU having the same number as the number of the logical antenna ports is a physical path for a result of the second operation to be an input for the second virtualization.

3 . The signal transmission method of claim 1 , wherein:
the first complex matrix is generated based on one of a discrete Fourier transform (DFT) matrix and an inverse discrete Fourier transform (IDFT) matrix; and the second complex matrix is generated based on the other of the DFT matrix and the IDFT matrix.

4 . The signal transmission method of claim 1 , wherein:
the first complex matrix is generated based on one of a Hadamard matrix and an inverse matrix of the Hadamard matrix; and the second complex matrix is generated based on the other of the Hadamard matrix and the inverse matrix of the Hadamard matrix.

5 . The signal transmission method of claim 3 , wherein
the DFT matrix is defined by Equation 1 below, the first complex matrix has rows of the same number as the number of the TXRUs and columns of the same number as the number of the logical antenna ports, and the second complex matrix has rows of the same number as the number of the logical TXRUs and columns of the same number as the number of the TXRUs:

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Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Moon Sung-Hyun
• Kim Cheulsoon
• Park Gi Yoon
• Shin Wooram
• Ko Young Jo
• Nam Junyoung

Classifications

• H04B7/10

  Polarisation diversity; Directional diversity · CPC title

• H04B7/0617

  for beam forming · CPC title

• H04B7/0691 Primary

  using subgroups of transmit antennas · CPC title

• H04B7/0456 Primary

  Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting · CPC title

• H04B7/0697

  using spatial multiplexing · CPC title