GB2337670B - Method and Apparatus for Generating a Pulse Function - Google Patents
Method and Apparatus for Generating a Pulse FunctionInfo
- Publication number
- GB2337670B GB2337670B GB9805504A GB9805504A GB2337670B GB 2337670 B GB2337670 B GB 2337670B GB 9805504 A GB9805504 A GB 9805504A GB 9805504 A GB9805504 A GB 9805504A GB 2337670 B GB2337670 B GB 2337670B
- Authority
- GB
- United Kingdom
- Prior art keywords
- generating
- pulse function
- pulse
- function
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
- H04L25/03834—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using pulse shaping
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
- H04L25/40—Transmitting circuits; Receiving circuits
- H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
- H04L25/4902—Pulse width modulation; Pulse position modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
-
- 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
- H04L27/2017—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained in which the phase changes are non-linear, e.g. generalized and Gaussian minimum shift keying, tamed frequency modulation
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Nonlinear Science (AREA)
- Power Engineering (AREA)
- Mobile Radio Communication Systems (AREA)
Priority Applications (25)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9814300A GB2333673A (en) | 1998-01-21 | 1998-07-01 | Despreading a signal which has been spread by a code and modulated according to a non-linear modulation scheme |
GB9824426A GB2333674B (en) | 1998-01-21 | 1998-11-06 | A radio telephone |
ES99901763T ES2321353T3 (en) | 1998-01-21 | 1999-01-21 | CONFORMATION OF IMPULSES TO COMPENSATE THE DISTORTION OF A COMPONENT. |
EP99901764A EP1050142A2 (en) | 1998-01-21 | 1999-01-21 | Radio telephone for spread-spectrum system using nonlinear modulation |
GB0018666A GB2349317A (en) | 1998-01-21 | 1999-01-21 | Pulse shaping which compensates for component distortion |
EP99901765A EP1050140A1 (en) | 1998-01-21 | 1999-01-21 | Pulse shaping according to modulation scheme |
EP99901763A EP1050139B1 (en) | 1998-01-21 | 1999-01-21 | Pulse shaping which compensates for component distortion |
JP2000529065A JP4127349B2 (en) | 1998-01-21 | 1999-01-21 | Pulse shaping method with modulation scheme |
JP2000529067A JP2002502150A (en) | 1998-01-21 | 1999-01-21 | Radiotelephone for spread spectrum system using nonlinear modulation method |
PCT/GB1999/000203 WO1999038298A1 (en) | 1998-01-21 | 1999-01-21 | Pulse shaping according to modulation scheme |
PCT/GB1999/000201 WO1999038297A1 (en) | 1998-01-21 | 1999-01-21 | Pulse shaping which compensates for component distortion |
CN 99804262 CN1294807A (en) | 1998-01-21 | 1999-01-21 | Radio telephone for spread-spectrum system using nonlinear modulation |
AU21764/99A AU2176499A (en) | 1998-01-21 | 1999-01-21 | Pulse shaping which compensates for component distortion |
AU21765/99A AU2176599A (en) | 1998-01-21 | 1999-01-21 | Radio telephone for spread-spectrum system using nonlinear modulation |
CNB998042684A CN1187940C (en) | 1998-01-21 | 1999-01-21 | Pulse shaping according to modulation scheme |
JP2000529064A JP4015363B2 (en) | 1998-01-21 | 1999-01-21 | Pulse shaping method for compensating for distortion due to components |
DE69940632T DE69940632D1 (en) | 1998-01-21 | 1999-01-21 | PULSE FORMING THE COMPONENT DISTORTION COMPENSATED |
GB0018658A GB2350762A (en) | 1998-01-21 | 1999-01-21 | Radio telephone for spread-spectrum system using nonlinear modulation |
AU21766/99A AU2176699A (en) | 1998-01-21 | 1999-01-21 | Pulse shaping according to modulation scheme |
CNB998042617A CN1156121C (en) | 1998-01-21 | 1999-01-21 | Pulse shaping which compensates for component distortion |
GB0018670A GB2349318A (en) | 1998-01-21 | 1999-01-21 | Pulse shaping according to modulation scheme |
PCT/GB1999/000202 WO1999038300A2 (en) | 1998-01-21 | 1999-01-21 | Radio telephone for spread-spectrum system using nonlinear modulation |
US09/625,201 US7274747B1 (en) | 1998-01-21 | 2000-07-21 | Pulse shaping which compensates for component distortion |
US09/625,202 US7054658B1 (en) | 1998-01-21 | 2000-07-21 | Pulse shaping according to modulation scheme |
US11/839,771 US20070280375A1 (en) | 1998-01-21 | 2007-08-16 | Pulse shaping which compensates for component distortion |
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9801306.3A GB9801306D0 (en) | 1998-01-21 | 1998-01-21 | Receiver/modulator |
GBGB9801302.2A GB9801302D0 (en) | 1998-01-21 | 1998-01-21 | Mobile phone system |
GBGB9801305.5A GB9801305D0 (en) | 1998-01-21 | 1998-01-21 | Optimizer |
GBGB9801308.9A GB9801308D0 (en) | 1998-01-21 | 1998-01-21 | Receiver/modulator |
GBGB9804600.6A GB9804600D0 (en) | 1998-03-05 | 1998-03-05 | A cdma modulator/demodulator |
GBGB9805126.1A GB9805126D0 (en) | 1998-03-11 | 1998-03-11 | A transceiver |
GBGB9805234.3A GB9805234D0 (en) | 1998-01-21 | 1998-03-12 | A radio telephone |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9805504D0 GB9805504D0 (en) | 1998-05-13 |
GB2337670A GB2337670A (en) | 1999-11-24 |
GB2337670B true GB2337670B (en) | 2003-08-27 |
Family
ID=27562944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9805504A Expired - Fee Related GB2337670B (en) | 1998-01-21 | 1998-03-13 | Method and Apparatus for Generating a Pulse Function |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2337670B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2351633A (en) * | 1999-07-01 | 2001-01-03 | Nokia Mobile Phones Ltd | Optimising pulse shaping for radio telephones |
US7020070B2 (en) * | 2001-04-10 | 2006-03-28 | Telefonaktiebolaget L M Ericsson (Publ) | Selectively controlled modulation distortion of an IQ-baseband signal |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4737969A (en) * | 1987-01-28 | 1988-04-12 | Motorola, Inc. | Spectrally efficient digital modulation method and apparatus |
US4750192A (en) * | 1986-06-24 | 1988-06-07 | Bbc Brown Boveri Ag | Method for transmitting digital data by means of continuous phase modulation |
-
1998
- 1998-03-13 GB GB9805504A patent/GB2337670B/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4750192A (en) * | 1986-06-24 | 1988-06-07 | Bbc Brown Boveri Ag | Method for transmitting digital data by means of continuous phase modulation |
US4737969A (en) * | 1987-01-28 | 1988-04-12 | Motorola, Inc. | Spectrally efficient digital modulation method and apparatus |
Also Published As
Publication number | Publication date |
---|---|
GB9805504D0 (en) | 1998-05-13 |
GB2337670A (en) | 1999-11-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20120313 |