JPS5383550A - Method of and device for equalizing frequency region - Google Patents
Method of and device for equalizing frequency regionInfo
- Publication number
- JPS5383550A JPS5383550A JP15429177A JP15429177A JPS5383550A JP S5383550 A JPS5383550 A JP S5383550A JP 15429177 A JP15429177 A JP 15429177A JP 15429177 A JP15429177 A JP 15429177A JP S5383550 A JPS5383550 A JP S5383550A
- Authority
- JP
- Japan
- Prior art keywords
- frequency region
- equalizing frequency
- equalizing
- region
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/04—Control of transmission; Equalising
- H04B3/14—Control of transmission; Equalising characterised by the equalising network used
- H04B3/141—Control of transmission; Equalising characterised by the equalising network used using multiequalisers, e.g. bump, cosine, Bode
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/755,093 US4141072A (en) | 1976-12-28 | 1976-12-28 | Frequency domain automatic equalizer using minimum mean square error correction criteria |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5383550A true JPS5383550A (en) | 1978-07-24 |
Family
ID=25037705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15429177A Pending JPS5383550A (en) | 1976-12-28 | 1977-12-21 | Method of and device for equalizing frequency region |
Country Status (5)
Country | Link |
---|---|
US (1) | US4141072A (ja) |
JP (1) | JPS5383550A (ja) |
CA (1) | CA1106001A (ja) |
DE (1) | DE2755308A1 (ja) |
GB (1) | GB1591545A (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57140016A (en) * | 1981-02-24 | 1982-08-30 | Toshiba Corp | Filter circuit |
JPS5888915A (ja) * | 1981-11-20 | 1983-05-27 | Hiroshi Miyagawa | 周波数サンプリング形自動等化器 |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2720666A1 (de) * | 1977-05-07 | 1978-11-09 | Philips Patentverwaltung | Verfahren und anordnung zur geraeuschanalyse |
US4328552A (en) * | 1980-01-17 | 1982-05-04 | Stovall Robert E | Statistical calibration system |
US4315319A (en) * | 1980-02-01 | 1982-02-09 | Rockwell International Corporation | Non-linear signal processor |
FR2482809B1 (fr) * | 1980-05-14 | 1986-11-14 | Labo Electronique Physique | Systeme adaptatif de reception de donnees numeriques a compensation des distorsions d'amplitude et de phase introduites par le canal de transmission des donnees |
US4386430A (en) | 1980-10-23 | 1983-05-31 | International Telephone And Telegraph Corporation | Automatic equalizer for synthesizing recursive filters |
US4375692A (en) * | 1981-04-30 | 1983-03-01 | The United States Of America As Represented By The Secretary Of The Navy | Least squares lattice decision feedback equalizer |
IT1158646B (it) * | 1982-06-11 | 1987-02-18 | Consiglio Nazionale Ricerche | Sistema di equalizzazione adattiva auto-ortogonalizzante nel dominio delle frequenze discrete ed equalizzatore che attua il sistema |
US4658286A (en) * | 1983-03-28 | 1987-04-14 | Jack Schwartz | Method and apparatus for correcting distortions in reproducing systems |
US4825448A (en) * | 1986-08-07 | 1989-04-25 | International Mobile Machines Corporation | Subscriber unit for wireless digital telephone system |
US4789952A (en) * | 1986-12-29 | 1988-12-06 | Tektronix, Inc. | Method and apparatus for digital compensation and digital equalization |
DE3889990T2 (de) * | 1987-07-21 | 1994-09-22 | Nec Corp | Digitaler automatischer Leitungsentzerrer mit Mitteln zur Regelung der Anzapfungsverstärkung in Abhängigkeit der mittleren Filterausgangsleistung. |
NL8703084A (nl) * | 1987-12-21 | 1989-07-17 | Philips Nv | Digitaal premodulatiefilter. |
US5325195A (en) * | 1991-05-06 | 1994-06-28 | Rasterops Corporation | Video normalizer for a display monitor |
US5337257A (en) * | 1991-05-09 | 1994-08-09 | Rockwell International Corporation | Moving vehicle classifier with nonlinear mapper |
EP0577901B1 (en) * | 1992-07-10 | 2000-04-26 | International Business Machines Corporation | Adaptive equalization system and method |
US5479255A (en) * | 1992-12-17 | 1995-12-26 | Trw Inc. | Multispectral signature extraction technique |
US5300780A (en) * | 1992-12-17 | 1994-04-05 | Trw Inc. | Missile surveillance method and apparatus |
US5416847A (en) * | 1993-02-12 | 1995-05-16 | The Walt Disney Company | Multi-band, digital audio noise filter |
US5854808A (en) * | 1993-09-14 | 1998-12-29 | Pacific Communication Sciences | Methods and apparatus for detecting the presence of a prescribed signal in a channel of a communications system |
US5574750A (en) * | 1993-09-14 | 1996-11-12 | Pacific Communication Sciences, Inc. | Methods and apparatus for detecting a cellular digital packet data (CDPD) carrier |
US5539774A (en) * | 1994-06-15 | 1996-07-23 | International Business Machines Corporation | Dual decision equalization method and device |
US5751347A (en) * | 1996-03-26 | 1998-05-12 | Harris Corporation | Vestigial sideband test signal generator and method |
US6097763A (en) * | 1997-10-31 | 2000-08-01 | Pairgain Technologies, Inc. | MMSE equalizers for DMT systems with cross talk |
SE9802059D0 (sv) * | 1998-06-10 | 1998-06-10 | Ericsson Telefon Ab L M | Digital channeliser and De-shanneliser |
US7254171B2 (en) * | 2000-01-20 | 2007-08-07 | Nortel Networks Limited | Equaliser for digital communications systems and method of equalisation |
JP2004509521A (ja) * | 2000-09-11 | 2004-03-25 | フォックス ディジタル | 適応アルゴリズムを用いて適応チャネル等化器の重みベクトルのスパーシティを活用する装置および方法 |
TWI357728B (en) * | 2003-07-14 | 2012-02-01 | Interdigital Tech Corp | High performance wireless receiver with cluster mu |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3755738A (en) * | 1972-05-01 | 1973-08-28 | Bell Telephone Labor Inc | Passband equalizer for phase-modulated data signals |
US3758881A (en) * | 1972-10-13 | 1973-09-11 | Bell Telephone Labor Inc | Transversal equalizer controlled by pilot tones |
NL171215C (nl) * | 1973-03-09 | 1983-02-16 | Trt Telecom Radio Electr | Automatische egalisatie-inrichting voor een datatransmissiekanaal. |
US3864632A (en) * | 1973-10-01 | 1975-02-04 | Rockwell International Corp | Fast Equalization System |
US4027257A (en) * | 1976-06-01 | 1977-05-31 | Xerox Corporation | Frequency domain automatic equalizer having logic circuitry |
-
1976
- 1976-12-28 US US05/755,093 patent/US4141072A/en not_active Expired - Lifetime
-
1977
- 1977-11-29 CA CA291,990A patent/CA1106001A/en not_active Expired
- 1977-12-12 DE DE19772755308 patent/DE2755308A1/de not_active Ceased
- 1977-12-21 JP JP15429177A patent/JPS5383550A/ja active Pending
- 1977-12-22 GB GB53468/77A patent/GB1591545A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57140016A (en) * | 1981-02-24 | 1982-08-30 | Toshiba Corp | Filter circuit |
JPH0117290B2 (ja) * | 1981-02-24 | 1989-03-29 | Tokyo Shibaura Electric Co | |
JPS5888915A (ja) * | 1981-11-20 | 1983-05-27 | Hiroshi Miyagawa | 周波数サンプリング形自動等化器 |
JPH0230609B2 (ja) * | 1981-11-20 | 1990-07-09 | Hiroshi Myagawa |
Also Published As
Publication number | Publication date |
---|---|
CA1106001A (en) | 1981-07-28 |
GB1591545A (en) | 1981-06-24 |
DE2755308A1 (de) | 1978-10-05 |
US4141072A (en) | 1979-02-20 |
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