WO1992020162A3 - Method and apparatus for resolving phase ambiguities in trellis coded modulated data - Google Patents

Method and apparatus for resolving phase ambiguities in trellis coded modulated data Download PDF

Info

Publication number
WO1992020162A3
WO1992020162A3 PCT/US1992/003656 US9203656W WO9220162A3 WO 1992020162 A3 WO1992020162 A3 WO 1992020162A3 US 9203656 W US9203656 W US 9203656W WO 9220162 A3 WO9220162 A3 WO 9220162A3
Authority
WO
WIPO (PCT)
Prior art keywords
differential
trellis
encoder
decoder
phase ambiguities
Prior art date
Application number
PCT/US1992/003656
Other languages
French (fr)
Other versions
WO1992020162A2 (en
Inventor
Jack Keil Wolf
Original Assignee
Qualcomm 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.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of WO1992020162A2 publication Critical patent/WO1992020162A2/en
Publication of WO1992020162A3 publication Critical patent/WO1992020162A3/en

Links

Classifications

    • 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
    • H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
    • H03M13/256—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM] with trellis coding, e.g. with convolutional codes and TCM
    • 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
    • H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
    • 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
    • H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
    • H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
    • H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors
    • 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
    • H04L27/186—Phase-modulated carrier systems, i.e. using phase-shift keying in which the information is carried by both the individual signal points and the subset to which the individual signal points belong, e.g. coset coding or related schemes

Abstract

A codec for resolving transmission phase ambiguities in the M-ary PSK modulation of trellis coded data. A trellis encoder (10) uses a differential encoder (22) and a convolutional encoder (24), along with multiplexed differential encoders (18, 20), to generate from sets of input data bits corresponding phase point values for use in M-ary PSK carrier modulation (12). A trellis decoder (32) uses a Viterbi decoder (40) and a differential decoder (50), along with multiplexed differential decoders (46, 48), to produce estimates of the original input data bits from the received signal sector value.
PCT/US1992/003656 1991-05-03 1992-05-01 Method and apparatus for resolving phase ambiguities in trellis coded modulated data WO1992020162A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/695,397 US5233630A (en) 1991-05-03 1991-05-03 Method and apparatus for resolving phase ambiguities in trellis coded modulated data
US695,397 1991-05-03

Publications (2)

Publication Number Publication Date
WO1992020162A2 WO1992020162A2 (en) 1992-11-12
WO1992020162A3 true WO1992020162A3 (en) 1993-01-07

Family

ID=24792819

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1992/003656 WO1992020162A2 (en) 1991-05-03 1992-05-01 Method and apparatus for resolving phase ambiguities in trellis coded modulated data

Country Status (10)

Country Link
US (1) US5233630A (en)
CN (1) CN1032104C (en)
AU (1) AU2265892A (en)
IE (1) IE80624B1 (en)
IL (1) IL101752A (en)
MX (1) MX9202041A (en)
MY (1) MY109076A (en)
TW (1) TW221838B (en)
WO (1) WO1992020162A2 (en)
ZA (1) ZA923193B (en)

Families Citing this family (93)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5214675A (en) * 1991-07-02 1993-05-25 Motorola, Inc. System and method for calculating channel gain and noise variance of a communication channel
JP2876497B2 (en) * 1991-08-23 1999-03-31 松下電器産業株式会社 Error correction code decoding method and apparatus
US5469452A (en) * 1991-09-27 1995-11-21 Qualcomm Incorporated Viterbi decoder bit efficient chainback memory method and decoder incorporating same
US5329551A (en) * 1992-04-16 1994-07-12 At&T Bell Laboratories Overlapped multilevel codes
JP2845705B2 (en) * 1993-01-14 1999-01-13 日本電気株式会社 Multi-level coded modulation communication device
US5428631A (en) * 1993-02-01 1995-06-27 Qualcomm Incorporated Method and apparatus for resolving phase ambiguities in trellis coded modulated data
US5844922A (en) * 1993-02-22 1998-12-01 Qualcomm Incorporated High rate trellis coding and decoding method and apparatus
US5402447A (en) * 1993-03-05 1995-03-28 Motorola, Inc. Speech decoding in a zero BER environment
US5438590A (en) * 1993-05-24 1995-08-01 Comstream Corporation Transmitting and receiving apparatus and method including punctured convolutional encoding and decoding
IT1272565B (en) * 1993-09-03 1997-06-23 Sits Soc It Telecom Siemens PROCEDURE AND DEVICE FOR THE RESOLUTION OF PHASE AMBIGUITY IN DEMODULATORS WITH TRUSS CODED NUMERICAL MODULATION AND VITERBI DECODING
FR2713423B1 (en) * 1993-11-30 1996-03-29 Alcatel Telspace Differential encoder and decoder for lattice-encoded MDP-8 modulation using the pragmatic approach.
FR2716588B1 (en) * 1994-02-18 1996-03-29 Alcatel Telspace Convolutional coding and decoding system of viterbi transparent to the phase jumps of pi and pi / 2, applicable in particular to TDMA transmissions.
US5473600A (en) * 1994-05-20 1995-12-05 Sierra Semiconductor Corporation Efficient data storage arrangement for far-end echo canceller
US5754600A (en) * 1994-08-29 1998-05-19 Motorola, Inc. Method and apparatus for optimum soft-decision viterbi decoding of convolutional-differential encoded QPSK data in coherent detection
US5450453A (en) * 1994-09-28 1995-09-12 Motorola, Inc. Method, apparatus and system for decoding a non-coherently demodulated signal
CA2161467C (en) * 1994-11-18 2001-01-30 Kumar Ramaswamy Apparatus for demodulating and decoding satellite, terrestrial and cable transmitted digital television data
US5497401A (en) * 1994-11-18 1996-03-05 Thomson Consumer Electronics, Inc. Branch metric computer for a Viterbi decoder of a punctured and pragmatic trellis code convolutional decoder suitable for use in a multi-channel receiver of satellite, terrestrial and cable transmitted FEC compressed-digital television data
US6889356B1 (en) 1994-11-23 2005-05-03 Cingular Wireless Ii, Llc Cyclic trellis coded modulation
US5675590A (en) * 1994-11-23 1997-10-07 At&T Wireless Services, Inc. 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
US7123600B2 (en) 1995-06-30 2006-10-17 Interdigital Technology Corporation Initial power control for spread-spectrum communications
US7020111B2 (en) 1996-06-27 2006-03-28 Interdigital Technology Corporation System for using rapid acquisition spreading codes for spread-spectrum communications
US7929498B2 (en) 1995-06-30 2011-04-19 Interdigital Technology Corporation Adaptive forward power control and adaptive reverse power control for spread-spectrum communications
US6885652B1 (en) 1995-06-30 2005-04-26 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
DE19530063A1 (en) * 1995-08-16 1997-02-20 Bosch Gmbh Robert Method for resolving phase ambiguity in trellis-coded modulation
JP3171772B2 (en) * 1995-08-23 2001-06-04 沖電気工業株式会社 Viterbi decoding method and Viterbi decoding device
US5991308A (en) * 1995-08-25 1999-11-23 Terayon Communication Systems, Inc. Lower overhead method for data transmission using ATM and SCDMA over hybrid fiber coax cable plant
US5805583A (en) * 1995-08-25 1998-09-08 Terayon Communication Systems Process for communicating multiple channels of digital data in distributed systems using synchronous code division multiple access
US5768269A (en) * 1995-08-25 1998-06-16 Terayon Corporation Apparatus and method for establishing frame synchronization in distributed digital data communication systems
US5745837A (en) * 1995-08-25 1998-04-28 Terayon Corporation Apparatus and method for digital data transmission over a CATV system using an ATM transport protocol and SCDMA
US5793759A (en) * 1995-08-25 1998-08-11 Terayon Corporation Apparatus and method for digital data transmission over video cable using orthogonal cyclic codes
US6665308B1 (en) 1995-08-25 2003-12-16 Terayon Communication Systems, Inc. Apparatus and method for equalization in distributed digital data transmission systems
US6356555B1 (en) 1995-08-25 2002-03-12 Terayon Communications Systems, Inc. Apparatus and method for digital data transmission using orthogonal codes
US6307868B1 (en) 1995-08-25 2001-10-23 Terayon Communication Systems, Inc. Apparatus and method for SCDMA digital data transmission using orthogonal codes and a head end modem with no tracking loops
US5740203A (en) * 1995-09-14 1998-04-14 Thomson Consumer Electronics, Inc. Trellis demapper of a convolutional decoder for decoding pragmatic trellis codes suitable for use in a multi-channel receiver of satellite, terrestrial and cable transmitted FEC compressed-digital television data
GB2307152B (en) * 1995-11-10 1999-04-07 Motorola Ltd Method and apparatus for enhanced communication capability while maintaining standard channel modulation compatibility
FR2742611B1 (en) 1995-12-19 1998-01-16 Alcatel Telspace CODING / DECODING SYSTEM USING MAQ-16 MODULATION CODED IN MULTILEVEL BLOCKS
US5742622A (en) * 1996-03-12 1998-04-21 Discovision Associates Error detection and correction system for a stream of encoded data
JP3140974B2 (en) * 1996-03-31 2001-03-05 富士通株式会社 Judgment method and precoder device
WO1998012818A1 (en) * 1996-09-17 1998-03-26 Philips Electronics N.V. Transmission system with improved lock detection
GB9622540D0 (en) * 1996-10-30 1997-01-08 Discovision Ass Trackback for viterbi decoder
US5938790A (en) * 1997-03-04 1999-08-17 Silicon Systems Research Ltd. Sequence error event detection and correction using fixed block digital sum codes
EP0887942A1 (en) * 1997-06-23 1998-12-30 Qualcomm Incorporated High rate trellis coding and decoding method and apparatus
JPH1127157A (en) * 1997-06-23 1999-01-29 Qualcomm Inc Fast trellis coding and decoding method
US5995551A (en) * 1997-08-15 1999-11-30 Sicom, Inc. Rotationally invariant pragmatic trellis coded digital communication system and method therefor
US5878085A (en) * 1997-08-15 1999-03-02 Sicom, Inc. Trellis coded modulation communications using pilot bits to resolve phase ambiguities
US5910967A (en) * 1997-10-20 1999-06-08 Sicom, Inc. Pragmatic encoder and method therefor
US6078625A (en) * 1997-10-20 2000-06-20 Sicom, Inc. Pragmatic decoder and method therefor
US20020051434A1 (en) * 1997-10-23 2002-05-02 Ozluturk Fatih M. Method for using rapid acquisition spreading codes for spread-spectrum communications
US6118822A (en) * 1997-12-01 2000-09-12 Conexant Systems, Inc. Adaptive entropy coding in adaptive quantization framework for video signal coding systems and processes
US6005897A (en) * 1997-12-16 1999-12-21 Mccallister; Ronald D. Data communication system and method therefor
AU2200099A (en) * 1997-12-16 1999-07-05 Sicom, Inc. Pragmatic trellis-coded modulation system and method therefor
US5909454A (en) * 1998-01-20 1999-06-01 General Instrument Corporation Intermediate rate applications of punctured convolutional codes for 8PSK trellis modulation over satellite channels
WO1999055009A1 (en) * 1998-04-17 1999-10-28 Tiernan Communications, Inc. 45 degree phase ambiguity resolution for 8psk modulation
US6087969A (en) * 1998-04-27 2000-07-11 Motorola, Inc. Sigma-delta modulator and method for digitizing a signal
US6236685B1 (en) 1998-06-05 2001-05-22 Sicom, Inc. Pragmatic trellis-coded digital communication with multi-stage branch metrics
US6426978B1 (en) * 1998-10-01 2002-07-30 Ericsson Inc. Digital communication systems and methods for differential and/or amplitude encoding and decoding secondary symbols
US6061408A (en) * 1999-04-16 2000-05-09 Tiernan Communications, Inc. Method and apparatus for 45° phase ambiguity resolution for one coded bit per symbol 8PSK modulation
EP1091579B1 (en) * 1999-09-07 2006-02-15 Thomson Licensing Trellis demapper for Trellis decoder
US6735734B1 (en) 2000-04-28 2004-05-11 John M. Liebetreu Multipoint TDM data distribution system
US6697441B1 (en) * 2000-06-06 2004-02-24 Ericsson Inc. Baseband processors and methods and systems for decoding a received signal having a transmitter or channel induced coupling between bits
US6798852B2 (en) 2000-06-06 2004-09-28 Ericsson Inc. Methods and systems for extracting a joint probability from a map decision device and processing a signal using the joint probability information
KR100672561B1 (en) 2000-09-22 2007-01-23 엘지전자 주식회사 Communication system of digital TV
KR100351829B1 (en) * 2000-09-26 2002-09-11 엘지전자 주식회사 digital communication system
KR100351831B1 (en) * 2000-10-02 2002-09-11 엘지전자 주식회사 VSB transmission system
US6683915B1 (en) * 2000-12-21 2004-01-27 Arraycomm, Inc. Multi-bit per symbol rate quadrature amplitude encoding
KR100673419B1 (en) * 2000-12-28 2007-01-24 엘지전자 주식회사 Transmitting system and data processing method
KR100674423B1 (en) * 2001-01-19 2007-01-29 엘지전자 주식회사 Transmitting/receiving system and data processing method
US7631340B2 (en) * 2001-04-18 2009-12-08 Lg Electronics Inc. VSB communication system
US6947487B2 (en) 2001-04-18 2005-09-20 Lg Electronics Inc. VSB communication system
KR100734351B1 (en) * 2001-04-20 2007-07-03 엘지전자 주식회사 Digital broadcasting transmit system
KR100736500B1 (en) * 2001-04-25 2007-07-06 엘지전자 주식회사 Communication system of VSB digital TV
KR100706508B1 (en) * 2001-04-25 2007-04-11 엘지전자 주식회사 Communication system of VSB digital TV
KR100793766B1 (en) * 2001-06-11 2008-01-10 엘지전자 주식회사 Digital transmit system and method
KR100850932B1 (en) * 2001-06-11 2008-08-12 엘지전자 주식회사 Digital transmit system and method
KR100510679B1 (en) * 2003-03-21 2005-08-31 엘지전자 주식회사 Digital VSB transmitting system and enhanced data multiplexing method in a VSB transmitting system
US7167531B2 (en) * 2001-09-17 2007-01-23 Digeo, Inc. System and method for shared decoding using a data replay scheme
US20030133519A1 (en) * 2001-09-17 2003-07-17 Manish Shah Forward tracing decoder apparatus and method
US7161994B2 (en) * 2001-09-17 2007-01-09 Digeo, Inc. System and method for shared decoding
KR100454398B1 (en) * 2001-12-28 2004-10-26 한국전자통신연구원 An adaptive modem, a pragmatic decoder and decoding method employed in the modem
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
KR100448884B1 (en) * 2002-10-25 2004-09-18 한국전자통신연구원 Apparatus of Generalized Phase Ambiguity Resolution for the Adaptive MODEM
GB0229320D0 (en) * 2002-12-17 2003-01-22 Koninkl Philips Electronics Nv Signal processing method and apparatus
US7305023B2 (en) * 2003-07-23 2007-12-04 Intel Corporation Receivers for cycle encoded signals
US7308025B2 (en) * 2003-07-23 2007-12-11 Intel Corporation Transmitters providing cycle encoded signals
US7599348B2 (en) 2003-11-04 2009-10-06 Lg Electronics Inc. Digital E8-VSB reception system and E8-VSB data demultiplexing method
US8098773B1 (en) 2005-09-19 2012-01-17 Piesinger Gregory H Communication method and apparatus
US9294321B2 (en) * 2010-05-14 2016-03-22 The Boeing Company Bit signal structure for differentially encoded broadcasts
JP5279959B2 (en) * 2010-12-06 2013-09-04 三菱電機株式会社 Parallel differential encoding circuit
US9041564B2 (en) * 2013-01-11 2015-05-26 Freescale Semiconductor, Inc. Bus signal encoded with data and clock signals
US10135460B2 (en) * 2013-10-01 2018-11-20 Texas Instruments Incorporated Apparatus and method for multilevel coding (MLC) with binary alphabet polar codes
CN103840841A (en) * 2014-02-11 2014-06-04 郭勇 Method for designing PTCM+8PSK codec capable of overcoming seven kinds of phase ambiguity

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4823346A (en) * 1986-04-16 1989-04-18 Hitachi, Ltd. Maximum likelihood decoder
US4993046A (en) * 1988-06-24 1991-02-12 Nippon Telegraph And Telephone Corporation Coded modulation communication system
US5115453A (en) * 1990-10-01 1992-05-19 At&T Bell Laboratories Technique for designing a multidimensional signaling scheme

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789360A (en) * 1972-10-13 1974-01-29 Harris Intertype Corp Convolutional decoder
JPS57155857A (en) * 1981-03-23 1982-09-27 Kokusai Denshin Denwa Co Ltd <Kdd> Maximum likelihood method and apparatus for error
US4586182A (en) * 1984-02-06 1986-04-29 Codex Corporation Source coded modulation system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4823346A (en) * 1986-04-16 1989-04-18 Hitachi, Ltd. Maximum likelihood decoder
US4993046A (en) * 1988-06-24 1991-02-12 Nippon Telegraph And Telephone Corporation Coded modulation communication system
US5115453A (en) * 1990-10-01 1992-05-19 At&T Bell Laboratories Technique for designing a multidimensional signaling scheme

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ANDREW J. VITERBI et al., "A Pragmatic Approach to Trellis - Coded Modulation", July 1989, IEEE COMMUNICATIONS MAGAZINE, pp. 11-19. *

Also Published As

Publication number Publication date
IL101752A0 (en) 1992-12-30
AU2265892A (en) 1992-12-21
US5233630A (en) 1993-08-03
IL101752A (en) 1997-11-20
CN1072302A (en) 1993-05-19
CN1032104C (en) 1996-06-19
WO1992020162A2 (en) 1992-11-12
IE80624B1 (en) 1998-10-21
MX9202041A (en) 1992-11-01
ZA923193B (en) 1993-04-28
TW221838B (en) 1994-03-21
MY109076A (en) 1996-11-30
IE921372A1 (en) 1992-11-04

Similar Documents

Publication Publication Date Title
WO1992020162A3 (en) Method and apparatus for resolving phase ambiguities in trellis coded modulated data
EP0716529A3 (en) Rotationally invariant trellis code
TW374963B (en) Communications systems and methods employing code rate partitioning with nonorthogonal modulation
CA2161057A1 (en) Soft Decision Digital Communication Method and Apparatus
CA2090166A1 (en) Multilevel coding using trellis-coded modulation and reed-solomon codes
ES507129A0 (en) IMPROVEMENTS IN A TRANSMISSION SYSTEM FOR THE TRANSMISSION OF DATA OR DIGITALIZED ANALOG INFORMATION, FROM A TRANSMITTER TO A RECEIVER.
KR960706247A (en) METHOD AND APPARATUS FOR THE TRANSMISSION OF VARIABLE RATE DIGITAL DATA
ATE200721T1 (en) METHOD AND DEVICE FOR TRANSMITTING MULTI-LEVEL MODULATED DATA USING CONTACTED CODING
CA2102789A1 (en) Error detection system
KR940027392A (en) Apparatus and method for communicating digital data using trellis coding with broken convolutional codes
CA2090247A1 (en) Overlapped multilevel codes
WO1998058496A3 (en) Transmission of digital signals by orthogonal frequency division multiplexing
CA2266108A1 (en) Iterative demapping
EP0392538A3 (en) Quadrature amplitude modulation communication system with transparent error correction
ATE253794T1 (en) CODING/DECODING OF ADDITIONAL SYMBOLS IN A COMMUNICATIONS SYSTEM
WO2002009379A3 (en) Transmission of main and auxilliary data using pulse width modulation
WO2002009380A3 (en) Data transmission using pulse with modulation
EP0759663A4 (en) Device and method for encoding data and device and method for decoding data
ATE349123T1 (en) TERMINATION OF CODED OR UNCODED MODULATION WITH PATH-ORIENTED DECODER
EP0980148A3 (en) Method and apparatus for channel coding and decoding for modulation schemes and memory
CA2371996A1 (en) Method and system for encoding to mitigate decoding errors in a receiver
WO2001010039A3 (en) Method for generating reliability information for the decoding channel of a radio receiver and corresponding radio receiver
ATE263455T1 (en) METHOD FOR DECODING A DATA SIGNAL
EP0949779A3 (en) Encoding methods and apparatus
TW366637B (en) Rate 2/3 mask trellis coded modulation using rate 1/2 convolutional encoder

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AU BG BR CA CS FI HU JP KP KR NO PL RO RU

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU MC NL SE

AK Designated states

Kind code of ref document: A3

Designated state(s): AU BG BR CA CS FI HU JP KP KR NO PL RO RU

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU MC NL SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
EX32 Extension under rule 32 effected after completion of technical preparation for international publication

Ref country code: KZ

LE32 Later election for international application filed prior to expiration of 19th month from priority date or according to rule 32.2 (b)

Ref country code: KZ

NENP Non-entry into the national phase

Ref country code: CA

EX32 Extension under rule 32 effected after completion of technical preparation for international publication

Ref country code: UZ

LE32 Later election for international application filed prior to expiration of 19th month from priority date or according to rule 32.2 (b)

Ref country code: UZ

122 Ep: pct application non-entry in european phase
122 Ep: pct application non-entry in european phase