CA2140851A1 - Transmitting and Receiving Apparatus and Method Including Punctured Convolutional Encoding and Decoding - Google Patents

Transmitting and Receiving Apparatus and Method Including Punctured Convolutional Encoding and Decoding

Info

Publication number
CA2140851A1
CA2140851A1 CA2140851A CA2140851A CA2140851A1 CA 2140851 A1 CA2140851 A1 CA 2140851A1 CA 2140851 A CA2140851 A CA 2140851A CA 2140851 A CA2140851 A CA 2140851A CA 2140851 A1 CA2140851 A1 CA 2140851A1
Authority
CA
Canada
Prior art keywords
punctured
signals
signal
rate
encoded
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.)
Granted
Application number
CA2140851A
Other languages
French (fr)
Other versions
CA2140851C (en
Inventor
Shimon Tzukerman
James Neil Esserman
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.)
Conexant Systems LLC
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2140851A1 publication Critical patent/CA2140851A1/en
Application granted granted Critical
Publication of CA2140851C publication Critical patent/CA2140851C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • H04L1/0065—Serial concatenated codes
    • 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
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/23—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using convolutional codes, e.g. unit memory codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/22—Time-division multiplex systems in which the sources have different rates or codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0067—Rate matching
    • H04L1/0068—Rate matching by puncturing
    • H04L1/0069—Puncturing patterns
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/068—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using time division multiplex techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/0806—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division the signals being two or more video signals

Abstract

Digital data (particularly encoded television program signals) are communicated from a transmitted to a terrestrial receiver by convolutional encoding the data into a first and a second signal during different periods representing a rate 1/2 signal. During the different periods, the two signals are combined and punctured into one serial punctured bit stream for producing a forward error encoded signal having a manually or automatically selected rate e.g. rate 2/3 or 6/7. Signals being encoded into different variable rates are transmitted at mutually exclusive times at first and second power levels to the receiver via a satellite. At the variable rates, parallel puncture bit streams are simultaneously derived and modulate simultaneously the pair of orthogonal carriers (QPSK). The improved puncturing method is capable of handling all of the optimum punctured codes and uses a punctured clock, multiplexer, FIFO, RAM, ROM, rate control source. The punctured clock is used to derive a pair of wavetrains the I and Q channels sequential bits and dummy bits inserted into the serial signal. The receiver responds to the QPSK carrier and derives first a serial signal having one sequential bit stream of alternating both I and Q sequential bits. Further they are sequentially as signals I and Q at the same time slots.
CA002140851A 1993-05-24 1994-05-24 Transmitting and receiving apparatus and method including punctured convolutional encoding and decoding Expired - Fee Related CA2140851C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/065,292 1993-05-24
US08/065,292 US5438590A (en) 1993-05-24 1993-05-24 Transmitting and receiving apparatus and method including punctured convolutional encoding and decoding
PCT/US1994/005837 WO1994028656A1 (en) 1993-05-24 1994-05-24 Transmitting and receiving apparatus and method including punctured convolutional encoding and decoding

Publications (2)

Publication Number Publication Date
CA2140851A1 true CA2140851A1 (en) 1994-12-08
CA2140851C CA2140851C (en) 1999-05-25

Family

ID=22061687

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002140851A Expired - Fee Related CA2140851C (en) 1993-05-24 1994-05-24 Transmitting and receiving apparatus and method including punctured convolutional encoding and decoding

Country Status (12)

Country Link
US (1) US5438590A (en)
EP (1) EP0651926B1 (en)
JP (1) JPH07506477A (en)
KR (1) KR0148055B1 (en)
CN (1) CN1111469A (en)
AU (1) AU7044294A (en)
BR (1) BR9405376A (en)
CA (1) CA2140851C (en)
DE (1) DE69424119T2 (en)
ES (1) ES2148333T3 (en)
RU (1) RU2117390C1 (en)
WO (1) WO1994028656A1 (en)

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Also Published As

Publication number Publication date
US5438590A (en) 1995-08-01
CA2140851C (en) 1999-05-25
DE69424119T2 (en) 2000-09-21
BR9405376A (en) 1999-09-08
DE69424119D1 (en) 2000-05-31
RU2117390C1 (en) 1998-08-10
WO1994028656A1 (en) 1994-12-08
EP0651926A1 (en) 1995-05-10
KR0148055B1 (en) 1998-08-17
AU7044294A (en) 1994-12-20
CN1111469A (en) 1995-11-08
EP0651926B1 (en) 2000-04-26
JPH07506477A (en) 1995-07-13
ES2148333T3 (en) 2000-10-16

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