EA199900807A1 - SYSTEM AND METHOD FOR FORMING A SPECTRUM OF TRANSMITTED SIGNALS OF DATA - Google Patents
SYSTEM AND METHOD FOR FORMING A SPECTRUM OF TRANSMITTED SIGNALS OF DATAInfo
- Publication number
- EA199900807A1 EA199900807A1 EA199900807A EA199900807A EA199900807A1 EA 199900807 A1 EA199900807 A1 EA 199900807A1 EA 199900807 A EA199900807 A EA 199900807A EA 199900807 A EA199900807 A EA 199900807A EA 199900807 A1 EA199900807 A1 EA 199900807A1
- Authority
- EA
- Eurasian Patent Office
- Prior art keywords
- predetermined number
- sign
- information bits
- bits
- per frame
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B14/00—Transmission systems not characterised by the medium used for transmission
- H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
- H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
-
- 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
- H04L25/4917—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 using multilevel codes
- H04L25/4927—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 using multilevel codes using levels matched to the quantisation levels of the channel
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Probability & Statistics with Applications (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Error Detection And Correction (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Dc Digital Transmission (AREA)
Abstract
Система передает биты цифровой информации, которые кодируются в заранее заданное число знаковых символов на фрейм, от передатчика (40) по сети (46) в приемник, в которой передаваемые знаковые символы имеют желаемую форму спектра; биты цифровой информации являются разделенными на первое заранее заданное число значащих информационных битов и второе заранее заданное число знаковых информационных битов на фрейм; передатчик содержит: блок отображения значений символов (50) для отображения значащих информационных битов в заранее определенное число значений символов; кодировщик знаковых битов (52) для кодирования знаковых информационных битов в заранее определенное число закодированных знаковых битов символов на фрейм; и селектор сигнальной точки (54), функционирующий в ответ на выходы блока отображения значений символов и кодировщика знаковых битов, который объединяет значения символов и закодированные знаковые биты символов для формирования заранее заданного числа передаваемых знаковых символов на фрейм.Международная заявка была опубликована вместе с отчетом о международном поиске.The system transmits digital information bits, which are encoded into a predetermined number of character symbols per frame, from the transmitter (40) over the network (46) to the receiver, in which the transmitted character symbols have the desired shape of the spectrum; the digital information bits are divided into a first predetermined number of significant information bits and a second predetermined number of sign information bits per frame; the transmitter contains: a block of mapping symbol values (50) for mapping significant information bits to a predetermined number of symbol values; the encoder of the sign bits (52) for encoding the sign information bits into a predetermined number of encoded sign bits of the symbols per frame; and a signal point selector (54), functioning in response to the outputs of the symbol value mapping unit and the sign bit coder, which combines the character values and encoded character bits of the characters to form a predetermined number of sign characters transmitted per frame. international search.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US4282697P | 1997-04-08 | 1997-04-08 | |
| US5231998A | 1998-03-31 | 1998-03-31 | |
| PCT/US1998/006650 WO1998045970A1 (en) | 1997-04-08 | 1998-04-03 | System and method for spectrally shaping transmitted data signals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EA199900807A1 true EA199900807A1 (en) | 2000-06-26 |
| EA001872B1 EA001872B1 (en) | 2001-10-22 |
Family
ID=26719663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EA199900807A EA001872B1 (en) | 1997-04-08 | 1998-04-03 | System and method for spectrally shaping transmitted data signals |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0974209A1 (en) |
| JP (1) | JP2002501693A (en) |
| KR (1) | KR20010006101A (en) |
| CN (1) | CN1252195A (en) |
| AU (1) | AU6882498A (en) |
| BR (1) | BR9815183A (en) |
| CA (1) | CA2285073A1 (en) |
| EA (1) | EA001872B1 (en) |
| IL (1) | IL131921A0 (en) |
| TW (1) | TW445733B (en) |
| WO (1) | WO1998045970A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5999109A (en) * | 1997-06-09 | 1999-12-07 | 3Com Corporation | Frame-based spectral shaping method and apparatus |
| US7016428B1 (en) * | 1998-11-14 | 2006-03-21 | Stmicroelectronics Asia Pacific Pte Ltd. | Methods of efficient implementation of trellis based spectral shaping with lookahead |
| ATE457582T1 (en) * | 1999-08-31 | 2010-02-15 | Broadcom Corp | SINGLE CARRIER SUBDIMENSIONAL MODULATION |
| US6778611B1 (en) | 1999-08-31 | 2004-08-17 | Broadcom Corporation | Subdimensional single-carrier modulation |
| US6418170B1 (en) * | 2000-02-07 | 2002-07-09 | Motorola, Inc. | Method and apparatus for achieving 180° phase invariant transmission in a PCM modem system |
| WO2001059946A1 (en) | 2000-02-10 | 2001-08-16 | Telogy Networks, Inc. | A generalized precoder for the upstream voiceband modem channel |
| US6973579B2 (en) * | 2002-05-07 | 2005-12-06 | Interdigital Technology Corporation | Generation of user equipment identification specific scrambling code for the high speed shared control channel |
| TWI411298B (en) * | 2009-03-05 | 2013-10-01 | Realtek Semiconductor Corp | Frequency conversion device and conversion method and filter thereof |
| US11418220B2 (en) | 2020-03-20 | 2022-08-16 | Huawei Technologies Co., Ltd. | Method, system, and apparatus for a segmented polarization-adjusted convolutional (PAC) code |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5040191A (en) * | 1987-02-24 | 1991-08-13 | Codex Corporation | Partial response channel signaling systems |
| US5150381A (en) * | 1989-02-16 | 1992-09-22 | Codex Corporation | Trellis shaping for modulation systems |
| US5548615A (en) * | 1993-05-03 | 1996-08-20 | At&T Corp. | Methods and apparatus for rotationally invariant multilevel coding |
| US5608397A (en) * | 1995-08-15 | 1997-03-04 | Lucent Technologies Inc. | Method and apparatus for generating DC-free sequences |
-
1998
- 1998-04-03 WO PCT/US1998/006650 patent/WO1998045970A1/en not_active Application Discontinuation
- 1998-04-03 IL IL13192198A patent/IL131921A0/en unknown
- 1998-04-03 EP EP98914478A patent/EP0974209A1/en not_active Withdrawn
- 1998-04-03 CA CA002285073A patent/CA2285073A1/en not_active Abandoned
- 1998-04-03 BR BR9815183-5A patent/BR9815183A/en not_active IP Right Cessation
- 1998-04-03 EA EA199900807A patent/EA001872B1/en not_active IP Right Cessation
- 1998-04-03 KR KR1019997009179A patent/KR20010006101A/en not_active Application Discontinuation
- 1998-04-03 JP JP54293598A patent/JP2002501693A/en not_active Ceased
- 1998-04-03 CN CN98803983A patent/CN1252195A/en active Pending
- 1998-04-03 AU AU68824/98A patent/AU6882498A/en not_active Abandoned
- 1998-05-08 TW TW087105268A patent/TW445733B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| TW445733B (en) | 2001-07-11 |
| CN1252195A (en) | 2000-05-03 |
| CA2285073A1 (en) | 1998-10-15 |
| JP2002501693A (en) | 2002-01-15 |
| IL131921A0 (en) | 2001-03-19 |
| EP0974209A1 (en) | 2000-01-26 |
| BR9815183A (en) | 2000-10-10 |
| AU6882498A (en) | 1998-10-30 |
| EA001872B1 (en) | 2001-10-22 |
| WO1998045970A1 (en) | 1998-10-15 |
| KR20010006101A (en) | 2001-01-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s) |
Designated state(s): AM AZ BY KZ KG MD TJ TM RU |