Reception apparatus of multi input multi output system and reception signal processing method

• US 9,838,224 B2
• Filed: 07/27/2016
• Issued: 12/05/2017
• Est. Priority Date: 08/21/2015
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Suk, Mi Kyung, Kim, Bong Su, Kang, Min Soo, Kim, Kwang Seon, Byun, Woo Jin, Lee, Young Seung
• Primary Examiner(s): TIEU, JANICE N
• Application Number:
  US15/220,707
• Publication Number:
  US 20170054487A1
• Time in Patent Office: 496 Days
• CPC Class Codes: H04B 7/0413 MIMO systems
• CPC Class Codes: H04L 25/02 Details ; arrangements for supplying electrical power along data transmission lines systems for transmitting signals via power distribution lines H04B3/54
• CPC Class Codes: H04L 25/0204 of multiple channels
• CPC Class Codes: H04L 25/0214 of a single coefficient
• CPC Class Codes: H04L 25/03331 Arrangements for the joint estimation of multiple sequences

Abstract

The present invention relates to a reception apparatus. The reception apparatus includes a plurality of reception antennas; and a signal processing unit configured to use reception characteristic of the plurality of reception antennas, wherein the signal processing unit comprises a channel estimation unit configured to respectively estimate a channel response matrix of each signal received via the plurality of reception antennas, and a coding unit configured to define a coding matrix based on an inverse matrix of the estimated channel response matrix, and to obtain a final output signal corresponding to each reception antenna by applying the coding matrix to each received signal.

Claims

1. A reception apparatus comprising:

a plurality of reception antennas; and

a signal processing unit configured to use reception characteristic of the plurality of reception antennas,

wherein the signal processing unit comprises a signal processor that executes computer executable program code, the computer executable program code comprising;

channel estimation program code that respectively estimates a channel response matrix of each signal received via the plurality of reception antennas, and

coding program code that defines a coding matrix based on an inverse matrix of the estimated channel response matrix, and that obtains a final output signal corresponding to each reception antenna by applying the coding matrix to each received signal,

wherein the coding program code applies the coding matrix to a first signal received by a first reception antenna of the plurality of reception antennas and erases the estimated channel response matrix from the first signal through the coding matrix.

2. The reception apparatus of claim 1, wherein the first signal comprises a first signal first channel and a first signal second channel, and the final output signal corresponding to the first reception antenna is obtained by erasing the first signal second channel from the first signal.

3. The reception apparatus of claim 1, wherein the program code applies the coding matrix to a second signal received by a second reception antenna of the plurality of reception antennas and erases the estimated channel response matrix from the second signal through the coding matrix.

4. The reception apparatus of claim 1, wherein the second signal comprises a second signal first channel and a second signal second channel, and the final output signal corresponding to the second reception antenna is obtained by erasing the second signal first channel from the second signal.

5. The reception apparatus of claim 1, wherein the coding unit applies the coding matrix for a noise component contained in each received signal.

6. The reception apparatus of claim 1, wherein the reception antenna is a reception side antenna of a multiple-input multiple-output (MIMO) system in a M×

M line of sight (LOS) channel environment, M being a whole number>

1.

7. The reception apparatus of claim 1, wherein the reception antenna is a reception side antenna of a multiple-input multiple-output (MIMO) system in a M×

N line of sight (LOS) channel environment, N being a whole number>

M which is a whole number>

1.

8. A method of processing a reception signal, the method comprising:

estimating a channel response matrix corresponding to each signal received via a plurality of reception antennas;

defining a coding matrix based on an inverse matrix of the estimated channel response matrix;

applying the coding matrix to each received signal; and

obtaining a final output signal corresponding to each reception antenna from the signal to which the coding matrix is applied,

wherein applying the coding matrix to each received signal comprises applying the coding matrix to a first signal received by a first reception antenna of the plurality of reception antennas and erasing the estimated channel response matrix from the first signal through the coding matrix.

9. The method of claim 8, wherein the first signal comprises a first signal first channel and a first signal second channel, and the final output signal corresponding to the first reception antenna is obtained by erasing the first signal second channel from the first signal.

10. The method of claim 8, wherein applying the coding matrix to each received signal comprises applying the coding matrix to a second signal received by a second reception antenna of the plurality of reception antennas and erasing the estimated channel response matrix from the second signal through the coding matrix.

11. The method of claim 8, wherein the second signal comprises a second signal first channel and a second signal second channel, and the final output signal corresponding to the second reception antenna is obtained by erasing the second signal first channel from the second signal.

12. The method of claim 8, wherein applying the coding matrix to each received signal comprises applying the coding matrix for a noise component contained in each received signal.