RECEPTION APPARATUS OF MULTI INPUT MULTI OUTPUT SYSTEM AND RECEPTION SIGNAL PROCESSING METHOD

• US 20170054487A1
• Filed: 07/27/2016
• Published: 02/23/2017
• 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
• Granted Patent: US 9,838,224 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 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.

2. The reception apparatus of claim 1, wherein the coding unit applies the coding matrix to a first signal received by a first reception antenna and erases the estimated channel response matrix from the first signal through the coding matrix.

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

4. The reception apparatus of claim 1, wherein the coding unit applies the coding matrix to a second signal received by a second reception antenna and erases the estimated channel response matrix from the second signal through the coding matrix.

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

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

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×

M line of sight (LOS) channel environment, when M>

1.

8. 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, when N>

M>

1.

9. 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.

10. The method of claim 9, wherein applying the coding matrix to each received signal comprises applying the coding matrix to a first signal received by a first reception antenna and erasing the estimated channel response matrix from the first signal through the coding matrix.

11. The method of claim 10, wherein the first signal comprises a first channel and a second channel, and the final output signal corresponding to the first reception antenna is obtained by erasing the second channel from the first signal.

12. The method of claim 9, wherein applying the coding matrix to each received signal comprises applying the coding matrix to a second signal received by a second reception antenna and erasing the estimated channel response matrix from the second signal through the coding matrix.

13. The method of claim 12, wherein the second signal comprises a first channel and a second channel, and the final output signal corresponding to the second reception antenna is obtained by erasing the first channel from the second signal.

14. The method of claim 9, wherein applying the coding matrix to each received signal comprises applying the coding matrix for a noise component contained in each received signal.