WO2003028276A3 - Qpsk phase ambiguity corrector - Google Patents

Qpsk phase ambiguity corrector Download PDF

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Publication number
WO2003028276A3
WO2003028276A3 PCT/US2002/031044 US0231044W WO03028276A3 WO 2003028276 A3 WO2003028276 A3 WO 2003028276A3 US 0231044 W US0231044 W US 0231044W WO 03028276 A3 WO03028276 A3 WO 03028276A3
Authority
WO
WIPO (PCT)
Prior art keywords
prsg
output
sequence
receiver
phase shift
Prior art date
Application number
PCT/US2002/031044
Other languages
French (fr)
Other versions
WO2003028276A9 (en
WO2003028276A2 (en
Inventor
S Joseph Campanella
Original Assignee
Worldspace Corp
S Joseph Campanella
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 Worldspace Corp, S Joseph Campanella filed Critical Worldspace Corp
Priority to EP02763799A priority Critical patent/EP1430615A2/en
Priority to AU2002327788A priority patent/AU2002327788A1/en
Publication of WO2003028276A2 publication Critical patent/WO2003028276A2/en
Publication of WO2003028276A3 publication Critical patent/WO2003028276A3/en
Publication of WO2003028276A9 publication Critical patent/WO2003028276A9/en

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Classifications

    • 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
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier

Abstract

A system and method for determining and correcting the phase shift between the carrier signal in a QPSK modulated data signal (402) and the local oscillator signal (403) in a receiver (404, 420, 480) of the QPSK modulated data signal by correcting the receiver's symbol information phase reference to 0° relative to the received carrier phase according to an output of a correcting means (480). Use is made of the unique seed property of pseudo random sequence generators (PRSG) (486, 502) in which inputting a 'seed' of length equal to the polynomial order of the PRSG, to a first PRSG, which was taken from the output of a second identical PRSG, causes the first PRSG to output a sequence of bits which will be the same as those in the second PRSG following the seed values. By comparing the received data signals, actually the PRSG sequence output bit stream, with a sequence of bits generated by a first PRSG in the receiver, which are supposed to be identical because of the unique seed property, a determination of the phase shift ambiguity between the LO and carrier signals can be made, and subsequently corrected. The principles of the invention also work for signals that modulated using octal phase shift keying.
PCT/US2002/031044 2001-09-28 2002-09-30 Qpsk phase ambiguity corrector WO2003028276A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP02763799A EP1430615A2 (en) 2001-09-28 2002-09-30 Qpsk phase ambiguity corrector
AU2002327788A AU2002327788A1 (en) 2001-09-28 2002-09-30 Qpsk phase ambiguity corrector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US30081301P 2001-09-28 2001-09-28
US60/300,813 2001-09-28

Publications (3)

Publication Number Publication Date
WO2003028276A2 WO2003028276A2 (en) 2003-04-03
WO2003028276A3 true WO2003028276A3 (en) 2003-07-03
WO2003028276A9 WO2003028276A9 (en) 2004-09-16

Family

ID=23160689

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/031044 WO2003028276A2 (en) 2001-09-28 2002-09-30 Qpsk phase ambiguity corrector

Country Status (5)

Country Link
EP (1) EP1430615A2 (en)
CN (1) CN1575553A (en)
AU (1) AU2002327788A1 (en)
WO (1) WO2003028276A2 (en)
ZA (1) ZA200402409B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104506220A (en) * 2014-12-08 2015-04-08 朱今兰 Communication method for wireless receiving and transmitting system based on long-term evolution (LTE)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2506516A1 (en) * 2011-03-31 2012-10-03 Alcatel Lucent Method of decoding optical data signals
EP2819327B1 (en) * 2013-06-28 2018-04-11 Alcatel Lucent Method of optical data transmission using polarization division multiplexing and QPSK
CN104506219B (en) * 2014-12-08 2017-11-10 无锡天路科技有限公司 A kind of wireless transceiver system based on Long Term Evolution
TWI781858B (en) * 2021-12-20 2022-10-21 常琪鋁業股份有限公司 Manufacturing method of high thermal conductivity aluminum alloy and products thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5559828A (en) * 1994-05-16 1996-09-24 Armstrong; John T. Transmitted reference spread spectrum communication using a single carrier with two mutually orthogonal modulated basis vectors
US6198763B1 (en) * 1996-02-16 2001-03-06 Fujitsu Limited Transmitter and receiver for spread-spectrum communication
US6363102B1 (en) * 1999-04-23 2002-03-26 Qualcomm Incorporated Method and apparatus for frequency offset correction

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5559828A (en) * 1994-05-16 1996-09-24 Armstrong; John T. Transmitted reference spread spectrum communication using a single carrier with two mutually orthogonal modulated basis vectors
US6198763B1 (en) * 1996-02-16 2001-03-06 Fujitsu Limited Transmitter and receiver for spread-spectrum communication
US6363102B1 (en) * 1999-04-23 2002-03-26 Qualcomm Incorporated Method and apparatus for frequency offset correction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104506220A (en) * 2014-12-08 2015-04-08 朱今兰 Communication method for wireless receiving and transmitting system based on long-term evolution (LTE)
CN104506220B (en) * 2014-12-08 2017-12-19 嵊州北航投星空众创科技有限公司 A kind of communication means of the wireless transceiver system based on Long Term Evolution

Also Published As

Publication number Publication date
WO2003028276A9 (en) 2004-09-16
WO2003028276A2 (en) 2003-04-03
EP1430615A2 (en) 2004-06-23
CN1575553A (en) 2005-02-02
ZA200402409B (en) 2005-03-29
AU2002327788A1 (en) 2003-04-07

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