WO1999005834A1 - Circuit de calcul de dispersion de la repartition des points de signal - Google Patents
Circuit de calcul de dispersion de la repartition des points de signal Download PDFInfo
- Publication number
- WO1999005834A1 WO1999005834A1 PCT/JP1998/002204 JP9802204W WO9905834A1 WO 1999005834 A1 WO1999005834 A1 WO 1999005834A1 JP 9802204 W JP9802204 W JP 9802204W WO 9905834 A1 WO9905834 A1 WO 9905834A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- baseband signal
- signal point
- point arrangement
- circuit
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
Definitions
- the signal point arrangement can be determined as follows from changes in the polarities and levels of the I axis, Q axis, 1i axis, and 1q axis.
- the baseband signal i is converted to the absolute value and the baseband signal q is converted to the absolute value, and the former is converted to the baseband signal HI, and the latter is converted to the baseband signal HQ Output as If it is determined that the area is (h), the baseband signal i is converted to the baseband signal Q after the baseband signal i is converted to an absolute value, and the baseband signal Q is replaced with the baseband signal i. And outputs the former as the converted baseband signal HI and the latter as the converted baseband signal HQ.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002296451A CA2296451C (en) | 1997-07-24 | 1998-05-20 | Signal point arrangement dispersion calculation circuit |
US09/463,222 US6643335B1 (en) | 1997-07-24 | 1998-05-20 | Signal point arrangement dispersion calculation circuit |
EP98921725A EP0996263B1 (en) | 1997-07-24 | 1998-05-20 | Signal point arrangement dispersion calculation circuit |
DE69840773T DE69840773D1 (de) | 1997-07-24 | 1998-05-20 | Schaltung zur Rechnung der Steuerung einer Signalpunktordnung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP09212745A JP3115261B2 (ja) | 1997-07-24 | 1997-07-24 | 信号点配置分散値算出回路 |
JP9/212745 | 1997-07-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999005834A1 true WO1999005834A1 (fr) | 1999-02-04 |
Family
ID=16627731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/002204 WO1999005834A1 (fr) | 1997-07-24 | 1998-05-20 | Circuit de calcul de dispersion de la repartition des points de signal |
Country Status (7)
Country | Link |
---|---|
US (1) | US6643335B1 (ja) |
EP (1) | EP0996263B1 (ja) |
JP (1) | JP3115261B2 (ja) |
CN (1) | CN1115834C (ja) |
CA (1) | CA2296451C (ja) |
DE (1) | DE69840773D1 (ja) |
WO (1) | WO1999005834A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6697440B1 (en) | 1998-02-25 | 2004-02-24 | Kabushiki Kaisha Kenwood | Demodulator of receiver |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6342253A (ja) * | 1986-08-08 | 1988-02-23 | Fujitsu Ltd | 4相位相復調器 |
JPH06181477A (ja) * | 1992-12-15 | 1994-06-28 | Fujitsu Ltd | データ通信用モデムのタイミング位相判定装置及び方法 |
JPH08111696A (ja) * | 1994-10-11 | 1996-04-30 | Kyocera Corp | 誤り率推定装置 |
JPH08163187A (ja) * | 1994-12-05 | 1996-06-21 | Kenwood Corp | 受信信号変調方式識別回路 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3421084A1 (de) * | 1983-06-06 | 1984-12-13 | Ricoh Co., Ltd., Tokio/Tokyo | Symbolentscheidungsverfahren |
US5970093A (en) * | 1996-01-23 | 1999-10-19 | Tiernan Communications, Inc. | Fractionally-spaced adaptively-equalized self-recovering digital receiver for amplitude-Phase modulated signals |
-
1997
- 1997-07-24 JP JP09212745A patent/JP3115261B2/ja not_active Expired - Lifetime
-
1998
- 1998-05-20 US US09/463,222 patent/US6643335B1/en not_active Expired - Lifetime
- 1998-05-20 WO PCT/JP1998/002204 patent/WO1999005834A1/ja active Application Filing
- 1998-05-20 CA CA002296451A patent/CA2296451C/en not_active Expired - Fee Related
- 1998-05-20 CN CN98807461A patent/CN1115834C/zh not_active Expired - Fee Related
- 1998-05-20 EP EP98921725A patent/EP0996263B1/en not_active Expired - Lifetime
- 1998-05-20 DE DE69840773T patent/DE69840773D1/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6342253A (ja) * | 1986-08-08 | 1988-02-23 | Fujitsu Ltd | 4相位相復調器 |
JPH06181477A (ja) * | 1992-12-15 | 1994-06-28 | Fujitsu Ltd | データ通信用モデムのタイミング位相判定装置及び方法 |
JPH08111696A (ja) * | 1994-10-11 | 1996-04-30 | Kyocera Corp | 誤り率推定装置 |
JPH08163187A (ja) * | 1994-12-05 | 1996-06-21 | Kenwood Corp | 受信信号変調方式識別回路 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0996263A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN1265248A (zh) | 2000-08-30 |
US6643335B1 (en) | 2003-11-04 |
DE69840773D1 (de) | 2009-06-04 |
CA2296451A1 (en) | 1999-02-04 |
EP0996263B1 (en) | 2009-04-22 |
EP0996263A1 (en) | 2000-04-26 |
JPH1146221A (ja) | 1999-02-16 |
CN1115834C (zh) | 2003-07-23 |
JP3115261B2 (ja) | 2000-12-04 |
CA2296451C (en) | 2008-01-29 |
EP0996263A4 (en) | 2005-09-07 |
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