GB2420950B - Methods and apparatus for symmetrical phase-shift keying - Google Patents

Methods and apparatus for symmetrical phase-shift keying

Info

Publication number: GB2420950B
Authority: GB; United Kingdom
Prior art keywords: methods; shift keying; symmetrical phase; symmetrical; phase
Prior art date: 2004-12-02
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.): Expired - Lifetime

Application number

GB0426477A

Other versions

GB0426477D0 (en

GB2420950A (en

Inventor

Chin Lee

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Via Technologies Inc

Original Assignee

Via Technologies Inc

Priority date (The priority date 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 date listed.)

2004-12-02

Filing date

2004-12-02

Publication date

2009-09-02

2004-12-02 Application filed by Via Technologies Inc filed Critical Via Technologies Inc

2004-12-02 Priority to GB0426477A priority Critical patent/GB2420950B/en

2005-01-05 Publication of GB0426477D0 publication Critical patent/GB0426477D0/en

2006-06-07 Publication of GB2420950A publication Critical patent/GB2420950A/en

2009-09-02 Application granted granted Critical

2009-09-02 Publication of GB2420950B publication Critical patent/GB2420950B/en

2024-12-02 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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
- 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
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
- H04L27/2007—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
- H04L27/3411—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power reducing the peak to average power ratio or the mean power of the constellation; Arrangements for increasing the shape gain of a signal set

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

GB0426477A 2004-12-02 2004-12-02 Methods and apparatus for symmetrical phase-shift keying Expired - Lifetime GB2420950B (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
GB0426477A GB2420950B (en)	2004-12-02	2004-12-02	Methods and apparatus for symmetrical phase-shift keying

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB0426477A GB2420950B (en)	2004-12-02	2004-12-02	Methods and apparatus for symmetrical phase-shift keying

Publications (3)

Publication Number	Publication Date
GB0426477D0 GB0426477D0 (en)	2005-01-05
GB2420950A GB2420950A (en)	2006-06-07
GB2420950B true GB2420950B (en)	2009-09-02

Family

ID=34043951

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB0426477A Expired - Lifetime GB2420950B (en)	2004-12-02	2004-12-02	Methods and apparatus for symmetrical phase-shift keying

Country Status (1)

Country	Link
GB (1)	GB2420950B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5642384A (en) *	1993-07-06	1997-06-24	Ericsson Inc.	Trellis coded modulation scheme with low envelope variation for mobile radio by constraining a maximum modulus of a differential phase angle

2004
- 2004-12-02 GB GB0426477A patent/GB2420950B/en not_active Expired - Lifetime

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5642384A (en) *	1993-07-06	1997-06-24	Ericsson Inc.	Trellis coded modulation scheme with low envelope variation for mobile radio by constraining a maximum modulus of a differential phase angle

Also Published As

Publication number	Publication date
GB0426477D0 (en)	2005-01-05
GB2420950A (en)	2006-06-07

Publication	Publication Date	Title
GB0822148D0 (en)	2009-01-14	Methods and apparatus
GB0417328D0 (en)	2004-09-08	Apparatus and method
GB0511407D0 (en)	2005-07-13	Methods and apparatus for visual application design
GB0406336D0 (en)	2004-04-21	Apparatus and method
EP1807186A4 (en)	2011-08-03	Apparatus and method for solid-liquid contact
GB2412393B (en)	2008-02-13	Apparatus and method
GB0507538D0 (en)	2005-05-18	Apparatus and method
GB0409691D0 (en)	2004-06-02	Apparatus and method
GB0419915D0 (en)	2004-10-13	Apparatus and method
GB0416471D0 (en)	2004-08-25	Apparatus and method
GB0502965D0 (en)	2005-03-16	Apparatus and method
GB0504159D0 (en)	2005-04-06	Apparatus and method
EP1804703A4 (en)	2009-09-02	Cryo-surgical apparatus and methods
GB0501979D0 (en)	2005-03-09	Apparatus and method
GB0420071D0 (en)	2004-10-13	Apparatus and method
GB0401389D0 (en)	2004-02-25	Illumination method and apparatus
GB2414492B (en)	2008-03-05	Apparatus and method
GB0508018D0 (en)	2005-05-25	Support apparatus and method
TWI368932B (en)	2012-07-21	Exposure apparatus and method
GB0411721D0 (en)	2004-06-30	Method and apparatus
GB2420950B (en)	2009-09-02	Methods and apparatus for symmetrical phase-shift keying
GB2414761B (en)	2007-10-03	Ballast removal method and apparatus
GB0408117D0 (en)	2004-05-19	Apparatus and method
GB0407659D0 (en)	2004-05-05	Method and apparatus
GB0419986D0 (en)	2004-10-13	Method and apparatus

Legal Events

Date	Code	Title	Description
2024-12-25	PE20	Patent expired after termination of 20 years	Expiry date: 20241201