IL276847A - Receiver and method for receiving a combination signal using separate in-phase and quadrature components - Google Patents

Receiver and method for receiving a combination signal using separate in-phase and quadrature components

Info

Publication number
IL276847A
IL276847A IL276847A IL27684720A IL276847A IL 276847 A IL276847 A IL 276847A IL 276847 A IL276847 A IL 276847A IL 27684720 A IL27684720 A IL 27684720A IL 276847 A IL276847 A IL 276847A
Authority
IL
Israel
Prior art keywords
signal
receiver
receiving
separate
combination signal
Prior art date
Application number
IL276847A
Other languages
Hebrew (he)
Other versions
IL276847B (en
Original Assignee
Innovationszentrum Fuer Telekommunikationstechnik Gmbh Izt
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 Innovationszentrum Fuer Telekommunikationstechnik Gmbh Izt filed Critical Innovationszentrum Fuer Telekommunikationstechnik Gmbh Izt
Publication of IL276847A publication Critical patent/IL276847A/en
Publication of IL276847B publication Critical patent/IL276847B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023—Interference mitigation or co-ordination
    • H04J11/0026—Interference mitigation or co-ordination of multi-user interference
    • H04J11/0036—Interference mitigation or co-ordination of multi-user interference at the receiver
    • H04J11/004—Interference mitigation or co-ordination of multi-user interference at the receiver using regenerative subtractive 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03057—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a recursive structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03248—Arrangements for operating in conjunction with other apparatus
    • H04L25/0328—Arrangements for operating in conjunction with other apparatus with interference cancellation circuitry
    • 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
    • H04L27/38—Demodulator circuits; Receiver circuits
    • 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
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H04L27/389—Demodulator circuits; Receiver circuits with separate demodulation for the phase and amplitude components

Description

Receiver and method for receiving a combination signal using separate in-phase and quadrature components Filing Date 21 02 2019 FIELD AND BACKGROUND OF THE INVENTION Technical Field Embodiments of the invention describe apparatuses and methods for multi-user communication.
Background of the Invention In digital information transmission, two or several similar data-carrying message signals oftentimes additively overlap in the transmission path, or are already output as overlapped signals by a transmitter. As long as a separability of the signals is ensured by the use of a multiplex method on the transmitter side, e.g. by using different frequency ranges (Frequency Division Multiplex: FDM), disjoint time slots (Time Division Multiplex: TDM), different codes (Code Division Multiplex Access: CDMA) or different spatial propagation directions and their resolution by several spatially separated receiving antennas (Space- Division Multiple Access through MIMO transmission: SDMA), this does not present any problem and has been the state of the art since the beginning of electrical communications engineering. This situation becomes more complicated if signals overlap uncoordinatedly in the same frequency band. As long as the reception signals differ significantly in terms of reception power, transmission rates (bit/symbol) and/or their power efficiency, successive demodulation, detection and decoding are oftentimes possible, i.e. detecting the strongest signal and subtracting it from the received sum signal after recoding and remodulation based on the detected data. Under certain boundary conditions, this approach may even represent an information-theoretically optimum solution [8]. In the case of less pronounced differences in the reception powers and/or power efficiencies of the individual signals, an iterative approach is recommended, wherein a partial subtraction of interfering signals that corresponds to the estimated probabilities of the data symbols is performed, and a manifestation of the probabilities should occur in favor of only one data symbol at a time in several iteration steps. In the case of signals of almost the same strength and power efficiency, only the use of an optimum multi-user receiver is usually a viable option. The overlapped signals are interpreted as one signal that, per modulation step, represents all data symbols - 2 - corresponding to the overlap of the individual signals. In the case of identical modulation methods for

Claims (1)

Claims
1. Receiver for receiving a combination signal that comprises two separate signal portions, 5 wherein the receiver is configured to set an apparatus for deriving a complex baseband signal from the combination signal such that a version of the combination signal filtered with a signal-matched filter is sampled 10 such that an output signal portion of the filter based on a first one of the signal portions is sampled essentially free of intersymbol interference, and such that the output signal portion based on the second signal portion therefore generally comprises intersymbol interferences as a consequence of a different symbol clock phase underlying this output signal portion; 15 wherein the receiver is configured to determine a probability density function ( )
IL276847A 2018-02-21 2020-08-20 Receiver and method for receiving a combination signal using separate in-phase and quadrature components IL276847B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018202649.1A DE102018202649A1 (en) 2018-02-21 2018-02-21 A receiver and method for receiving a combination signal using separate in-phase and quadrature components
PCT/EP2019/054367 WO2019162406A2 (en) 2018-02-21 2019-02-21 Receiver and method for receiving a combination signal using a separate in-phase- and quadrature component

Publications (2)

Publication Number Publication Date
IL276847A true IL276847A (en) 2020-10-29
IL276847B IL276847B (en) 2022-01-01

Family

ID=65717958

Family Applications (1)

Application Number Title Priority Date Filing Date
IL276847A IL276847B (en) 2018-02-21 2020-08-20 Receiver and method for receiving a combination signal using separate in-phase and quadrature components

Country Status (5)

Country Link
EP (1) EP3756291B1 (en)
DE (1) DE102018202649A1 (en)
IL (1) IL276847B (en)
WO (1) WO2019162406A2 (en)
ZA (1) ZA202005748B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019209800B4 (en) 2019-07-03 2021-07-29 Innovationszentrum für Telekommunikationstechnik GmbH IZT Receiver for receiving a combination signal taking into account inter-symbol interference, method for receiving a combination signal and computer program
DE102019209801A1 (en) 2019-07-03 2021-01-07 Innovationszentrum für Telekommunikationstechnik GmbH IZT Receiver for receiving a combination signal with consideration of inter-symbol interference and low complexity, method for receiving a combination signal and computer program
CN114363134B (en) * 2021-12-31 2023-10-27 北京升哲科技有限公司 Signal demodulation method and device, electronic equipment and storage medium

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7106813B1 (en) * 2000-03-16 2006-09-12 Qualcomm, Incorporated Method and apparatus for combined soft-decision based interference cancellation and decoding

Also Published As

Publication number Publication date
EP3756291B1 (en) 2023-08-16
DE102018202649A1 (en) 2019-08-22
IL276847B (en) 2022-01-01
WO2019162406A2 (en) 2019-08-29
EP3756291A2 (en) 2020-12-30
WO2019162406A3 (en) 2019-10-17
ZA202005748B (en) 2022-10-26

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