RECEIVING DEVICE, RECEIVING METHOD, AND PROGRAM

• US 20130329839A1
• Filed: 03/01/2012
• Published: 12/12/2013
• Est. Priority Date: 03/10/2011
• Status: Active Grant

• Current Assignee: Saturn Licensing LLC (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Kobayashi, Kenichi, Yuba, Tadaaki, Kamata, Hiroyuki
• Granted Patent: US 9,203,674 B2
• Time in Patent Office: Days
• US Class Current: 375/345
• CPC Class Codes: H03G 3/3078 Circuits generating control signals for digitally modulated signals
• CPC Class Codes: H04B 7/0669 using different channel coding between antennas space-time coding H04L1/0618
• CPC Class Codes: H04L 25/0224 using sounding signals
• CPC Class Codes: H04L 27/2613 Structure of the reference signals
• CPC Class Codes: H04L 27/2647 Arrangements specific to the receiver only equalisation H04L27/01
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver

Abstract

The present technique relates to a receiving device, a receiving method, and a program that are designed to improve reception performance. A receiving device according to one aspect of the present technique includes: a gain control unit that adjusts the power of a signal including a first pilot signal transmitted as signals having a high correlation in terms of polar direction via different transmission channels, and a second pilot signal transmitted as signals having a low correlation in terms of polar direction via the different transmission channels; and a control unit that controls the followability of the gain at the gain control unit in accordance with a data transmission method. The present technique can be applied to a receiver that receives data transmitted by MISO (Multi Input, Single Output) compliant with the DVB-T2 standards.

Claims

1. A receiving device comprising:

a gain control unit configured to adjust power of a signal including a first pilot signal transmitted as signals having a high correlation in terms of polar direction via different transmission channels, and a second pilot signal transmitted as signals having a low correlation in terms of polar direction via the different transmission channels; and

a control unit configured to control followability of gain at the gain control unit in accordance with a data transmission method.

2. The receiving device according to claim 1, wherein, when the data transmission method is MISO, the control unit causes the gain to follow with characteristics different from characteristics with SISO.

3. The receiving device according to claim 1, wherein the control unit controls the followability of the gain at the gain control unit by changing a parameter defining the followability of the gain.

4. The receiving device according to claim 1, wherein the control unit controls the followability of the gain at the gain control unit by stopping the gain control while one of the first pilot signal and the second pilot signal is input.

5. The receiving device according to claim 1, wherein

the gain control unit adjusts power of an OFDM signal of DVB-T2,

the first pilot signal is a Sum SP signal, and

the second pilot signal is a Diff SP signal.

6. The receiving device according to claim 5, further comprising

a detecting unit configured to detect a P1 symbol,

wherein, when the data transmission method indicated by information contained in the P1 symbol is MISO, the control unit controls the followability of the gain at the gain control unit.

7. The receiving device according to claim 6, wherein the control unit controls the followability of the gain at the gain control unit by setting such a parameter as to make the followability of the gain lower than followability achieved when the data transmission method is SISO.

8. The receiving device according to claim 6, further comprising

a processing unit configured to extract the first pilot signal and the second pilot signal from the OFDM signal, and determine which one of the first pilot signal and the second pilot signal has the lower power,

wherein the control unit controls the followability of the gain at the gain control unit by stopping the gain control while the pilot signal with the lower power is input.

9. The receiving device according to claim 6, further comprising

a processing unit configured to calculate a difference between power of the first pilot signal and power of the second pilot signal,

wherein, when the data transmission method indicated by the information contained in the P1 symbol is MISO, and the difference between the power of the first pilot signal and the power of the second pilot signal is equal to or larger than a threshold, the control unit controls the followability of the gain at the gain control unit.

10. The receiving device according to claim 9, wherein the control unit controls the followability of the gain at the gain control unit by setting such a parameter as to make the followability of the gain lower than followability achieved when the data transmission method is SISO.

11. The receiving device according to claim 9, wherein

the processing unit further determines which one of the first pilot signal and the second pilot signal has the lower power, and

the control unit controls the followability of the gain at the gain control unit by stopping the gain control while the pilot signal with the lower power is input.

12. A receiving method comprising the steps of:

adjusting power of a signal including a first pilot signal transmitted as signals having a high correlation in terms of polar direction via different transmission channels, and a second pilot signal transmitted as signals having a low correlation in terms of polar direction via the different transmission channels by the gain control unit; and

controlling followability of gain at the gain control unit in accordance with a data transmission method.

13. A program for causing a computer to perform an operation comprising the steps of:

adjusting power of a signal including a first pilot signal transmitted as signals having a high correlation in terms of polar direction via different transmission channels, and a second pilot signal transmitted as signals having a low correlation in terms of polar direction via the different transmission channels by the gain control unit; and

controlling followability of gain at the gain control unit in accordance with a data transmission method.