Device and method for detecting filter bank multi carrier wave symbols in wireless communication system

• US 10,736,096 B2
• Filed: 05/27/2016
• Issued: 08/04/2020
• Est. Priority Date: 05/29/2015
• Status: Active Grant

• Current Assignee: Industry Academic Cooperation Foundation, Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Chanhong, Hong, Dae-Sik, Weon, Sung-Woo, Chung, Won-Suk
• Primary Examiner(s): Pham, Chi H
• Assistant Examiner(s): Huang, Weibin
• Application Number:
  US15/578,144
• Publication Number:
  US 20180167939A1
• Time in Patent Office: 1,530 Days
• CPC Class Codes: H04L 27/26416 Filtering per subcarrier, e.g. filterbank multicarrier [FBMC]
• CPC Class Codes: H04L 27/2654 Filtering per subcarrier, e.g. filterbank multicarrier [FBMC]
• CPC Class Codes: H04L 27/2662 Symbol synchronisation
• CPC Class Codes: H04L 27/2691 involving interference determination or cancellation
• CPC Class Codes: H04W 56/0045 compensating for timing error by altering transmission time
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/51 based on terminal or device properties
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

The present disclosure relates to a pre-5^th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4^th-Generation (4G) communication system such as Long Term Evolution (LTE). A method for operating a base station in a wireless communication system according to an embodiment includes determining interference between symbols of a signal received from at least one terminal, determining a time offset of the received signal based on the determined interference, and determining a detection interval of the signal received from the at least one terminal based on the time offset.

Claims

1. A method for operating a base station in a wireless communication system, comprising:

filtering a signal comprises a plurality of filter bank multi carrier (FBMC) symbols;

determining interference between the FBMC symbols of the signal received from a terminal;

determining a size of a time offset, wherein the size corresponds to the interference;

determining a sign of the time offset, wherein the sign is one of a positive value or a negative value corresponding to the size of the time offset;

determining the time offset of the received signal based on the determined size and the sign; and

determining a detection interval of the signal received from the at least one terminal based on the time offset.

2. The method of claim 1, wherein determining the sign of the time offset comprises:

removing a completely detected signal from the received signal based on the determined sign and determining a variance of the interference between the FBMC symbols; and

determining the sign of the time offset based on the determined variance.

3. The method of claim 1, wherein determining the size of the time offset comprises:

determining the size of the time offset with an external factor compensated using channel information,

wherein the external factor comprises inter-user interference (IUI).

4. The method of claim 1, further comprising:

re-determining the interference between the FBMC symbols based on the detection interval; and

re-determining the detection interval based on the re-determined interference.

5. The method of claim 1, wherein the interference between the FBMC symbols comprises at least one of an error vector magnitude (EVM) or a signal to noise power ratio (SNR).

6. The method of claim 1, wherein the detection interval is determined based on a first value which sums a weight corresponding to the time offset for the terminal, and a second value which sums a product of the weight and the time offset.

7. The method of claim 6, wherein the detection interval is determined by changing the weight for the terminal.

8. A base station in a wireless communication system, the base station comprising:

a transceiver; and

at least one processor operatively coupled with the transceiver,

wherein the at least one processor is configured to;

filter a signal comprises a plurality of filter bank multi carrier (FBMC) symbols,

determine interference between FBMC symbols of the signal received from at a terminal,

determine a size of a time offset, wherein the size corresponds to the interference,

determine a sign of the time offset, wherein the sign is one of a positive value or a negative value corresponding to the size of the time offset,

determine the time offset of the received signal based on the determined interference, and

determine a detection interval of the signal received from the at least one terminal based on the determined time offset.

9. The base station of claim 8, wherein the at least one processor is configured to control to:

removes a completely detected signal from the received signal based on the determined sign,

determine a variance of the interference between the FBMC symbols, and

determine the sign of the time offset based on the determined variance.

10. The base station of claim 8, wherein the at least one processor is configured to determine the size of the time offset with an external factor compensated using channel information, and

wherein the external factor comprises inter-user interference (IUI).

11. The base station of claim 8, wherein the at least one processor is further configured to:

re-determine the interference between the FBMC symbols based on the detection interval, and

re-determine the detection interval based on the re-determined interference.

12. The base station of claim 8, wherein the interference between the FBMC symbols comprises at least one of an error vector magnitude (EVM) or a signal to noise power ratio (SNR).

13. The base station of claim 8, wherein the detection interval is determined based on a first value which sums a weight corresponding to the time offset for the terminal, and a second value which sums a product of the weight and the time offset.

14. The base station of claim 13, wherein the detection interval is determined by changing the weight for the terminal.