PHASE NOISE LIMITING APPARATUS, PHASE NOISE LIMITING METHOD, RECEIVING APPARATUS, RECEIVING METHOD, AND PROGRAMS

• US 20090080578A1
• Filed: 09/24/2008
• Published: 03/26/2009
• Est. Priority Date: 09/26/2007
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: NANIWADA, Koji
• Granted Patent: US 8,290,099 B2
• Time in Patent Office: Days
• US Class Current: 375/346
• CPC Class Codes: H04B 1/123 using adaptive balancing or compensation means adaptive filter circuits and algorithms H03H
• CPC Class Codes: H04L 2027/003 at baseband only
• CPC Class Codes: H04L 2027/0046 Open loops
• CPC Class Codes: H04L 2027/0055 single phase
• CPC Class Codes: H04L 2027/0069 Loop filters
• CPC Class Codes: H04L 27/0014 Carrier regulation of chaotic carriers H04L27/001; for multicarrier receivers H04L27/2657

Abstract

Disclosed herein is a phase noise limiting apparatus including a detection section configured to detect a phase noise quantity from an input signal; a determination section configured such that furnished with a plurality of correspondence tables indicating parameters used for phase synchronization with the input signal, the determination section determines one of the parameters in keeping with the phase noise quantity detected by the detection section on the basis of one of the plurality of correspondence tables; and a phase noise limitation section configured to limit the phase noise in the input signal based on the parameter determined by the determination section.

Claims

1. A phase noise limiting apparatus comprising:

detecting means for detecting a phase noise quantity from an input signal;

determinating means configured such that furnished with a plurality of correspondence tables indicating parameters used for phase synchronization with said input signal, said determinating means for determining one of said parameters in keeping with said phase noise quantity detected by said detection means on the basis of one of said plurality of correspondence tables; and

phase noise limitation means for limiting the phase noise in said input signal based on the parameter determined by said determination means.

2. The phase noise limiting apparatus according to claim 1, further comprising designation means for designating from among said plurality of correspondence tables the correspondence table to be used by said determination means.

3. The phase noise limiting apparatus according to claim 1, wherein said parameter is a loop gain of said phase noise limitation means.

4. The phase noise limiting apparatus according to claim 1, wherein said phase noise limitation means includes:

detection means for detecting phase errors from said input signal;

averaging means for averaging said phase errors detected by said detection means in accordance with said parameter; and

phase compensation means for compensating the phase errors detected by said detection means from said input signal.

5. The phase noise limiting apparatus according to claim 4, wherein

said averaging means is a loop filter;

and

said parameter is a loop gain of said loop filter.

6. A phase noise limiting method for use with a phase noise limiting apparatus for detecting a phase noise quantity from an input signal and limiting phase noise in said input signal based on the detected phase noise quantity, said phase noise limiting method comprising the steps of:

detecting said phase noise quantity from said input signal;

furnished with a plurality of correspondence tables indicating parameters used for phase synchronization with said input signal, determining one of said parameters in keeping with said phase noise quantity detected in said detecting step on the basis of one of said plurality of correspondence tables; and

limiting the phase noise in said input signal based on the parameter determined in said determining step.

7. A program for causing a computer to execute a phase noise limiting process of a phase noise limiting apparatus for detecting a phase noise quantity from an input signal and limiting phase noise in said input signal based on the detected phase noise quantity, said program comprising the steps of:

detecting said phase noise quantity from said input signal;

furnished with a plurality of correspondence tables indicating parameters used for phase synchronization with said input signal, determining one of said parameters in keeping with said phase noise quantity detected in said detecting step on the basis of one of said plurality of correspondence tables; and

limiting the phase noise in said input signal based on the parameter determined in said determining step.

8. A receiving apparatus for receiving an input signal, said receiving apparatus comprising:

frequency conversion means for converting said input signal in frequency;

detection means for detecting a phase noise quantity from said input signal converted in frequency by said frequency conversion means;

determination means configured such that furnished with a plurality of correspondence tables indicating parameters used for phase synchronization with said input signal, said determination means for determining one of said parameters in keeping with said phase noise quantity detected by said detection means on the basis of one of said plurality of correspondence tables which corresponds to the type of a frequency converter constituting said frequency conversion means; and

phase noise limitation means for limiting the phase noise in said input signal based on the parameter determined by said determination means.

9. The receiving apparatus according to claim 8, wherein

said input signal is a radio frequency signal known as the radio frequency signal;

and

said frequency conversion means is a radio frequency circuit known as the radio frequency circuit for converting said radio frequency signal into an intermediate frequency signal known as the intermediate frequency signal.

10. A receiving method for receiving an input signal, said receiving method comprising the steps of:

converting said input signal in frequency by use of frequency conversion means;

detecting a phase noise quantity from said input signal converted in frequency by said frequency conversion means in said converting step;

furnished with a plurality of correspondence tables indicating parameters used for phase synchronization with said input signal, determining one of said parameters in keeping with said phase noise quantity detected in said detecting step on the basis of one of said plurality of correspondence tables which corresponds to the type of a frequency converter constituting said frequency conversion means; and

limiting the phase noise in said input signal based on the parameter determined in said determining step.

11. A program for causing a computer to execute a receiving process for receiving an input signal, said program comprising the steps of:

converting said input signal in frequency by use of frequency conversion means;

detecting a phase noise quantity from said input signal converted in frequency by said frequency conversion means in said converting step;

furnished with a plurality of correspondence tables indicating parameters used for phase synchronization with said input signal, determining one of said parameters in keeping with said phase noise quantity detected in said detecting step on the basis of one of said plurality of correspondence tables which corresponds to the type of a frequency converter constituting said frequency conversion means; and

limiting the phase noise in said input signal based on the parameter determined in said determining step.

12. A phase noise limiting apparatus comprising:

a detection section configured to detect a phase noise quantity from an input signal;

a determination section configured such that furnished with a plurality of correspondence tables indicating parameters used for phase synchronization with said input signal, said determination section determines one of said parameters in keeping with said phase noise quantity detected by said detection section on the basis of one of said plurality of correspondence tables; and

a phase noise limitation section configured to limit the phase noise in said input signal based on the parameter determined by said determination section.

13. A receiving apparatus for receiving an input signal, said receiving apparatus comprising:

a frequency conversion section configured to convert said input signal in frequency;

a detection section configured to detect a phase noise quantity from said input signal converted in frequency by said frequency conversion section;

a determination section configured such that furnished with a plurality of correspondence tables indicating parameters used for phase synchronization with said input signal, said determination section determines one of said parameters in keeping with said phase noise quantity detected by said detection section on the basis of one of said plurality of correspondence tables which corresponds to the type of a frequency converter constituting said frequency conversion section; and

a phase noise limitation section configured to limit the phase noise in said input signal based on the parameter determined by said determination section.