WO2002017508A3 - Digital receiver and method for symbol detection in a spread spectrum signal - Google Patents

Digital receiver and method for symbol detection in a spread spectrum signal Download PDF

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Publication number
WO2002017508A3
WO2002017508A3 PCT/JP2001/007118 JP0107118W WO0217508A3 WO 2002017508 A3 WO2002017508 A3 WO 2002017508A3 JP 0107118 W JP0107118 W JP 0107118W WO 0217508 A3 WO0217508 A3 WO 0217508A3
Authority
WO
WIPO (PCT)
Prior art keywords
digital receiver
spread spectrum
spectrum signal
symbol detection
receiver
Prior art date
Application number
PCT/JP2001/007118
Other languages
French (fr)
Other versions
WO2002017508A2 (en
Inventor
Jyhchau Horng
Jay Bao
Original Assignee
Mitsubishi Electric 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
Priority claimed from US09/643,278 external-priority patent/US6839379B1/en
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2002522083A priority Critical patent/JP2004507925A/en
Priority to EP01956970A priority patent/EP1230743A2/en
Publication of WO2002017508A2 publication Critical patent/WO2002017508A2/en
Publication of WO2002017508A3 publication Critical patent/WO2002017508A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7107—Subtractive interference cancellation
    • H04B1/71075—Parallel interference cancellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0845—Weighted combining per branch equalization, e.g. by an FIR-filter or RAKE receiver per antenna branch
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0848—Joint weighting
    • H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0891—Space-time diversity

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Noise Elimination (AREA)

Abstract

ABSTRACT A digital receiver detects symbols in a baseband signal in a DS-CDMA network. The receiver includes multiple spaced apart antennas. A time-frequency rake receiver is connected to each of the antennas. An interference canceller is connected to each output of each of the rake receiver. Each interference canceller produces a contributing symbol in parallel. A diversity combiner determines a decision symbol corresponding to the baseband signal from the contributing symbols.
PCT/JP2001/007118 2000-08-22 2001-08-20 Digital receiver and method for symbol detection in a spread spectrum signal WO2002017508A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2002522083A JP2004507925A (en) 2000-08-22 2001-08-20 Digital receiver and method for detecting symbols in baseband signal
EP01956970A EP1230743A2 (en) 2000-08-22 2001-08-20 Digital receiver and method for symbol detection in a spread spectrum signal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/643,278 2000-08-22
US09/643,278 US6839379B1 (en) 2000-01-19 2000-08-22 Adaptive DS-CDMA multi-user receiver with diversity combining for interference cancellation

Publications (2)

Publication Number Publication Date
WO2002017508A2 WO2002017508A2 (en) 2002-02-28
WO2002017508A3 true WO2002017508A3 (en) 2002-05-30

Family

ID=24580112

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/007118 WO2002017508A2 (en) 2000-08-22 2001-08-20 Digital receiver and method for symbol detection in a spread spectrum signal

Country Status (4)

Country Link
EP (1) EP1230743A2 (en)
JP (1) JP2004507925A (en)
CN (1) CN1419749A (en)
WO (1) WO2002017508A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7386057B2 (en) 2003-02-20 2008-06-10 Nec Corporation Iterative soft interference cancellation and filtering for spectrally efficient high-speed transmission in MIMO systems
US9497733B2 (en) * 2013-02-13 2016-11-15 Qualcomm Incorporated Single-frequency network (SFN) operation for machine-type communications (MTC) coverage enhancements

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806844A1 (en) * 1995-11-29 1997-11-12 Ntt Mobile Communications Network Inc. Diversity receiver and control method therefor
WO2000016494A1 (en) * 1998-09-14 2000-03-23 Nokia Networks Oy Rake receiver
WO2001059937A2 (en) * 2000-01-26 2001-08-16 Qualcomm Incorporated Multipath doppler-adjusted frequency tracking loop

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0806844A1 (en) * 1995-11-29 1997-11-12 Ntt Mobile Communications Network Inc. Diversity receiver and control method therefor
WO2000016494A1 (en) * 1998-09-14 2000-03-23 Nokia Networks Oy Rake receiver
WO2001059937A2 (en) * 2000-01-26 2001-08-16 Qualcomm Incorporated Multipath doppler-adjusted frequency tracking loop

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SAYEED A M ET AL: "JOINT MULTIPATH-DOPPLER DIVERSITY IN MOBILE WIRELESS COMMUNICATIONS", IEEE TRANSACTIONS ON COMMUNICATIONS, IEEE INC. NEW YORK, US, VOL. 47, NR. 1, PAGE(S) 123-132, ISSN: 0090-6778, XP000802436 *

Also Published As

Publication number Publication date
CN1419749A (en) 2003-05-21
EP1230743A2 (en) 2002-08-14
WO2002017508A2 (en) 2002-02-28
JP2004507925A (en) 2004-03-11

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