DE69431772T2 - Rotationsunabhängiges, trelliskodiertes Modulationssystem - Google Patents

Rotationsunabhängiges, trelliskodiertes Modulationssystem

Info

Publication number
DE69431772T2
DE69431772T2 DE69431772T DE69431772T DE69431772T2 DE 69431772 T2 DE69431772 T2 DE 69431772T2 DE 69431772 T DE69431772 T DE 69431772T DE 69431772 T DE69431772 T DE 69431772T DE 69431772 T2 DE69431772 T2 DE 69431772T2
Authority
DE
Germany
Prior art keywords
trellis
independent
rotation
modulation system
coded modulation
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 - Lifetime
Application number
DE69431772T
Other languages
English (en)
Other versions
DE69431772D1 (de
Inventor
Lee-Fang Wei
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.)
AT&T Corp
Original Assignee
AT&T Corp
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 AT&T Corp filed Critical AT&T Corp
Publication of DE69431772D1 publication Critical patent/DE69431772D1/de
Application granted granted Critical
Publication of DE69431772T2 publication Critical patent/DE69431772T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H04L27/3416—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes
    • H04L27/3427—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation
    • H04L27/3438—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation using an underlying generalised cross constellation
DE69431772T 1993-04-09 1994-03-30 Rotationsunabhängiges, trelliskodiertes Modulationssystem Expired - Lifetime DE69431772T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US4584693A 1993-04-09 1993-04-09
US08/049,739 US5418798A (en) 1993-04-09 1993-04-19 Multidimensional trellis-coded communication system

Publications (2)

Publication Number Publication Date
DE69431772D1 DE69431772D1 (de) 2003-01-09
DE69431772T2 true DE69431772T2 (de) 2003-09-04

Family

ID=26723257

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69431772T Expired - Lifetime DE69431772T2 (de) 1993-04-09 1994-03-30 Rotationsunabhängiges, trelliskodiertes Modulationssystem

Country Status (5)

Country Link
US (1) US5418798A (de)
EP (1) EP0619666B1 (de)
JP (1) JP3088238B2 (de)
CA (1) CA2115946C (de)
DE (1) DE69431772T2 (de)

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EP0545581B1 (de) * 1991-12-06 1999-04-21 National Semiconductor Corporation Integriertes Datenverarbeitungssystem mit CPU-Kern und unabhängigem parallelen, digitalen Signalprozessormodul
US5995539A (en) * 1993-03-17 1999-11-30 Miller; William J. Method and apparatus for signal transmission and reception
US5848102A (en) * 1993-06-04 1998-12-08 Qualcomm Incorporated Method and apparatus for encoding/decoding QAM trellis coded data
US5600676A (en) * 1993-07-06 1997-02-04 Ericsson Ge Mobile Communications Inc. Modulation scheme with low envelope variation for mobile radio by constraining a maximum modulus of a differential phase angle
JPH07245635A (ja) * 1994-03-04 1995-09-19 Sony Corp 信号点マッピング方法および信号点検出方法
US5508752A (en) * 1994-04-12 1996-04-16 Lg Electronics Inc. Partial response trellis decoder for high definition television (HDTV) system
US5675590A (en) * 1994-11-23 1997-10-07 At&T Wireless Services, Inc. Cyclic trellis coded modulation
US6889356B1 (en) * 1994-11-23 2005-05-03 Cingular Wireless Ii, Llc Cyclic trellis coded modulation
US5659578A (en) * 1994-11-23 1997-08-19 At&T Wireless Services, Inc. High rate Reed-Solomon concatenated trellis coded 16 star QAM system for transmission of data over cellular mobile radio
US5621761A (en) * 1994-12-09 1997-04-15 General Instrument Corporation Of Delaware Rotationally invariant trellis coding incorporating transparent binary convolutional codes
US5926508A (en) * 1995-02-21 1999-07-20 Koos Technical Services, Inc. Communication scheme using non-coherent frequency detection of trellis-based coding of plural transmission frequencies per baud
EP0775410A2 (de) * 1995-06-08 1997-05-28 Koninklijke Philips Electronics N.V. Übertragungssystem mit sender, phasenmodulator und frequenzmultiplizierer
JP3399725B2 (ja) * 1995-10-31 2003-04-21 富士通株式会社 非同期転送モード用マルチメディア無線通信システム
EP2280494A3 (de) 1996-04-26 2011-12-07 AT & T Corp. Verfahren und Vorrichtung zur Datenübertragung mit mehreren Sendeantennen
US5809081A (en) * 1996-05-20 1998-09-15 Mitel Semiconductor Americas Inc. System and method for encoding data such that after precoding the data has a pre-selected parity structure
US6031873A (en) * 1996-06-24 2000-02-29 3Com Corporation Nested shell mapping
WO1998010553A2 (en) * 1996-09-02 1998-03-12 Telia Ab (Publ) Improvements in, or relating to, control channels for telecommunications transmission systems
US5953376A (en) * 1996-09-26 1999-09-14 Lucent Technologies Inc. Probabilistic trellis coded modulation with PCM-derived constellations
US5907581A (en) * 1996-09-27 1999-05-25 International Business Machines Corporation Two-dimensional low-pass filtering code apparatus and method
US6185258B1 (en) * 1997-09-16 2001-02-06 At&T Wireless Services Inc. Transmitter diversity technique for wireless communications
EP0960487B1 (de) 1997-10-31 2006-03-08 AT&T Wireless Services, Inc. Maximal-wahrscheinlichkeitsdetektion von verketteten raum/zeit kodes für schnurlose anwendungen mit sender-diversity
US6088408A (en) 1998-11-06 2000-07-11 At & T Corp. Decoding for generalized orthogonal designs for space-time codes for wireless communication
US6188736B1 (en) * 1997-12-23 2001-02-13 At&T Wireless Svcs. Inc. Near-optimal low-complexity decoding of space-time codes for fixed wireless applications
EP1056251A4 (de) * 1998-02-12 2002-11-06 Fujitsu Ltd Mehrdimensionale kodierung, sowie verfahren und einrichtung dafür
US6459740B1 (en) 1998-09-17 2002-10-01 At&T Wireless Services, Inc. Maximum ratio transmission
EP1224783A2 (de) * 2000-04-06 2002-07-24 Lucent Technologies Inc. Aufwärtsdatenübertragung
US6591395B1 (en) * 2000-06-18 2003-07-08 Silicon Integrated Systems Corporation Memory reduction techniques in a viterbi decoder
US20060203927A1 (en) * 2001-03-27 2006-09-14 Aware, Inc. Systems and methods for implementing receiver transparent Q-mode
US6735264B2 (en) 2001-08-31 2004-05-11 Rainmaker Technologies, Inc. Compensation for non-linear distortion in a modem receiver
US7173966B2 (en) * 2001-08-31 2007-02-06 Broadband Physics, Inc. Compensation for non-linear distortion in a modem receiver
CN107040492A (zh) * 2017-06-07 2017-08-11 重庆邮电大学 一种基于8‑qam信号的ldpc码新颖编码调制方案

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4562426A (en) * 1982-11-08 1985-12-31 Codex Corporation Symbol coding apparatus
US4713817A (en) * 1985-04-25 1987-12-15 Codex Corporation Multidimensional, convolutionally coded communication systems
US4873701A (en) * 1987-09-16 1989-10-10 Penril Corporation Modem and method for 8 dimensional trellis code modulation
US4891823A (en) * 1988-10-26 1990-01-02 General Datacomm Inc. Channel encoder for generating rotationally invariant trellis codes
CA2052906A1 (en) * 1990-10-09 1992-04-10 Antoine Chouly System for modulating/demodulating digital signals transmitted with encoded modulation

Also Published As

Publication number Publication date
JPH0730592A (ja) 1995-01-31
US5418798A (en) 1995-05-23
CA2115946C (en) 1998-10-27
DE69431772D1 (de) 2003-01-09
JP3088238B2 (ja) 2000-09-18
CA2115946A1 (en) 1994-10-10
EP0619666A3 (de) 1997-11-19
EP0619666A2 (de) 1994-10-12
EP0619666B1 (de) 2002-11-27

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