WO2011069859A2 - Procédé de fourniture d'au moins un signal de sortie - Google Patents

Procédé de fourniture d'au moins un signal de sortie Download PDF

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Publication number
WO2011069859A2
WO2011069859A2 PCT/EP2010/068453 EP2010068453W WO2011069859A2 WO 2011069859 A2 WO2011069859 A2 WO 2011069859A2 EP 2010068453 W EP2010068453 W EP 2010068453W WO 2011069859 A2 WO2011069859 A2 WO 2011069859A2
Authority
WO
WIPO (PCT)
Prior art keywords
received
signal
antenna
output signal
receiving
Prior art date
Application number
PCT/EP2010/068453
Other languages
German (de)
English (en)
Other versions
WO2011069859A3 (fr
Inventor
Jens Passoke
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to CN2010800557053A priority Critical patent/CN102652403A/zh
Priority to RU2012128654/07A priority patent/RU2563028C2/ru
Priority to EP10795636A priority patent/EP2510636A2/fr
Publication of WO2011069859A2 publication Critical patent/WO2011069859A2/fr
Publication of WO2011069859A3 publication Critical patent/WO2011069859A3/fr

Links

Classifications

    • 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

Definitions

  • the invention relates to a method and an arrangement for providing at least one output signal for a receiving unit.
  • High-quality receiving systems or arrangements for FM radio reception in vehicles use several antennas in order to improve the reception compared to systems with only one antenna.
  • the advantages of multiple antennas are used by switching between the antennas and forwarding a selected antenna signal via a high frequency signal to a receiver. This method is called switching diversity.
  • the desired reception frequency is filtered out on the radio from the reception band, converted to an intermediate frequency, filtered again and processed further, wherein the user determines via the operation of the radio which frequency is to be received.
  • the switch box needs information about which receive frequency has been selected from the receive band on the radio.
  • the intermediate frequency signal generated in the radio is supplied to the antenna changeover box for further signal processing via a high-frequency cable.
  • the document DE 10 2006 006 266 A1 describes that signals are forwarded from the receiver to the switching box via a separate connection, which prevent switching in special reception situations.
  • a new signal is calculated from two signals, which are produced by amplifying and / or filtering two different, linearly independent received signals of the antenna, by means of a complex linear combination.
  • Phase diversity systems combine the two or more antenna signals after sampling in the digital plane, the complex coefficients of the linear combination being continuously adapted to the reception conditions.
  • switching diversity systems discretely select between several signals, even if individual ones of these signals result from the addition of two antenna signals. Switching causes signal interference.
  • switching diversity systems with a separate switching box of the antenna from the car radio (head unit) receive an intermediate frequency signal from which the information for switching is obtained.
  • one of the signals of the antenna is converted to another frequency band in an antenna-side mixer box, so that after an addition the received signals from both antennas via a High-frequency cables with different center frequencies are transmitted.
  • a disadvantage of this method is that two additional mixing processes are to be integrated in a signal path of the receiving system. Except- the frequency conversion must take place over the entire reception bandwidth, so that the additional mixers are loaded with the entire dynamics of the reception band.
  • a radio receiving unit can be performed.
  • a DDA or digital directional antenna arrangement which is designed to perform a spatially oriented, digital antenna reception, or a corresponding system in the vehicle can be used without high system costs caused by two high-frequency cables.
  • the received signals from at least two antennas are respectively processed or preprocessed by digitization.
  • each received signal can be filtered, amplified and / or digitized.
  • a frequency of a received signal can also be converted.
  • the received signals are combined by calculation performing at least one arithmetic operation and thus providing the at least one output signal.
  • the at least two independent received signals in the calculation typically become respectively multiplied by complex factors and added.
  • the thus formed linear combination of two processed received signals of the same receiving channel is in the antenna arrangement, usually the receiving device, and not, as in the prior art, in the radio before.
  • the at least one output signal or antenna signal formed from the received signals can be fed to the radio (head unit) as a receiving unit for further processing via a connection formed as a cable, for example only.
  • a connection formed as a cable for example only.
  • two or more output or antenna signals can be provided.
  • An antenna system or an antenna arrangement with the DDA signal processing is referred to as DDA tuner box or switching box.
  • a unit with this signal processing can also be called a DDA antenna.
  • an antenna arrangement comprises the at least two antennas, a short feed line and the receiving device designed as a switching box.
  • the high-frequency cable can also be used for the power supply as well as for the digital control of the receiver or the DDA tuner box.
  • energy supply z. B. fed via a so-called phantom power a DC voltage to the high-frequency cable and forwarded to the DDA tuner box.
  • driving the DDA tuner box the use of different carrier frequencies for the transmission of the at least one digital output signal from the DDA tuner box to the radio or to the head unit, the digital control from the head unit to the DDA tuner box and the digital control the DDA antennas provided.
  • the antenna amplifier and the precursor of each receive path can be combined or combined, so that only an automatic gain control (AGC) is realized, which is usually integrated in the receiving block of the receiving device.
  • AGC automatic gain control
  • the at least one output signal can also be generated by modulating the processed received signals on a carrier and / or combined in one channel.
  • the AM or amplitude-modulated radio reception which can be carried out within the scope of the method can furthermore be realized in such a way that a frequency of the at least one output signal or a mixed signal from the fixed frequency of the local oscillator or the reference frequency, if necessary by dividing and / or multiplying a frequency of at least a received signal, usually the frequencies of the received signals is obtained.
  • a part of an AM broadcast band is converted into the corresponding intermediate frequency with the mixer of one of the signal paths and, if necessary, filtered.
  • At least two independent to form the linear combination receiving modules in which temporarily no linear combination is formed are used, with a receiving module remains on the receiving frequency and a received signal for the audio signal, while the second receiving module searches in the background for better alternative frequencies.
  • a receiving module remains on the receiving frequency and a received signal for the audio signal, while the second receiving module searches in the background for better alternative frequencies.
  • As an interface of the typically designed as a DDA tuner box receiving device can also be further processed signal, such.
  • the audio signal can be used.
  • the received signal for the car radio or the head unit is an audio source.
  • the method according to the invention or the receiving device according to the invention differs from a receiving box, which is located somewhere in a vehicle, receives two or more antenna signals, combines them in an analogue manner and outputs an audio signal.
  • the arrangement described is designed to carry out all the steps of the presented method.
  • individual steps of this method can also be carried out by individual components of the arrangement.
  • functions of the arrangement or functions of individual components of the arrangement can be implemented as steps of the method.
  • steps of the method may be realized as functions of individual components of the device or the entire device.
  • FIG. 1 shows a schematic representation of a first example of a device known from the prior art.
  • FIG. 2 shows a schematic representation of a second example of a device known from the prior art.
  • FIG. 3 shows a schematic representation of a first embodiment of an arrangement according to the invention.
  • FIG. 4 shows a schematic representation of a second embodiment of an arrangement according to the invention.
  • the embodiment shown schematically in FIG. 1 of a device 2 known from the prior art comprises an antenna arrangement 4 with two antennas 6, 8 arranged in a rear window of a vehicle.
  • An antenna tapping unit 10, 12 is provided for each antenna 6, 8.
  • These antenna tap units 10, 12 are connected to an antenna switching box 14.
  • the antenna switching box 14 is connected to a car radio 20 via a first line 16, which is designed to transmit an analogue RF signal, and via a second separate line 18, which is designed to transmit an analogue IF or IF signal Also known as head unit connected.
  • the implementation of a switching diversity method is carried out here with two antenna taps on the Antennenabgriffäen 10, 12 of Antennenumschaltbox 16 and formed as high-frequency lines lines 16, 18 between the Antennenumschaltbox 14 and the car radio 20. It is during a receive operation between the antennas 6, 8 out - And connected, wherein the IF and the RF signal can be performed via only one line 16, 18. In this case, corresponding crossovers are then to be provided by circuitry.
  • a disadvantage of the method for carrying out the switching diversity is that at the same time only one antenna signal can be used for reception, which makes the reception catch capacity of the device 2 limits. Another disadvantage is that the switching between the antennas 6, 8 causes interference.
  • FIG. 2 The second example shown in FIG. 2 for a device 24 known from the prior art has largely the same components as the device 2 shown in FIG. 1, wherein the antenna switching box 14 is omitted here.
  • a DDA or digital directional antenna car radio 28 is provided here, which has a first line 16 and a first Antennenabgriffsech 10 with a first antenna 6 and a second line 18 and a second Antennenabgriffsech 12 with a second antenna. 8 connected is.
  • a new signal is calculated from two receiving systems, which comprise the antennas 6, 8 and the antenna tapping units 10, 12, by means of a complex linear combination.
  • the resulting signal can have a significantly improved quality compared to the individual signals provided by the antennas 6, 8. So u. a. Interference caused by multipath reception in the field can be almost completely suppressed. In this case, an increase in the performance can be realized in receiving areas with low field strength by appropriate summation of both signals.
  • Corresponding devices 24 or systems have been on the market since about 2002 and are commonly referred to as DDA (Digital Directional Antenna) or phase diversity systems.
  • the first embodiment of an inventive arrangement 40 shown schematically in FIG. 3 comprises an antenna arrangement 42 with at least one first antenna 44 and at least one second antenna 46, which are spaced apart from one another. Each antenna 44, 46 is connected to an antenna tapping unit 48, 50. The antenna tapping units 48, 50 are in turn connected to a receiver 52, which may also be referred to as a DDA tuner box or digital directional antenna receiver 52. The receiver 52 is connected via only one designed as a cable or line connection 54 with a receiving unit 56, which is designed here as a car radio or Headu- nit.
  • the receiving device 52 is provided by the first antenna 44 via the first Antennenabgriffsawa 48, a first received signal and the second antenna 46 via the second Antennenabgriffsawa 50, a second received signal. Furthermore, in the receiving device 52 each received signal is processed separately. Subsequently, the processed signals are combined by a calculation and thereby generates at least one output signal. Consequently, by implementing a phase diversity method in the receiving device 52 from the received signals, the at least one output signal, which may also be referred to as an antenna signal, provided. For a transmission of the at least one output signal, which may also be referred to as an antenna signal, to the receiving unit 56, only one connection 54 is required.
  • FIG. 6 A second embodiment of an arrangement 60 according to the invention is shown schematically in FIG.
  • This arrangement 60 comprises at least two spatially separated antennas 62, 64, which are connected to a receiving device 66 designed as a DDA tuner box. Reception signals picked up by the antennas 62, 64, which are provided synchronously for the same transmitter on the same frequency, are transmitted to the receiving device 66.
  • a signal processing 68 is provided for further processing of the received signals.
  • This signal processing 68 comprises a processing 70 executed individually for each received signal.
  • each received signal of each antenna 62, 64 is individually processed, each received signal usually being filtered and / or is reinforced. Furthermore, a conversion of a frequency of each received signal and / or a digitizing of the received signal can be provided.
  • a calculation 72 is provided in the signal processing 68.
  • the processed received signals are combined with each other.
  • the calculation 72 provided for the combination of the received signals usually comprises the formation of a linear combination of the already processed received signals.
  • the processed received signals can be divided and / or multiplied as part of the calculation 72.
  • the processing performed in the receiving device 66 include u. a. Also, an analog-to-digital or AD conversion, the calculation of complex DDA coefficients and the addition of the resulting processed digital received signals.
  • the arrangement 60 from FIG. 4 further comprises a receiving unit 74, which may be designed as a car radio or head unit and is arranged, for example, in a center console of a vehicle.
  • the receiving device 66 and the receiving unit 74 are connected to each other via a cable 76 formed as a connection.
  • the at least one output signal provided by the calculation 72 of the processed received signals is transmitted via the one cable 76 from the receiving device 66 to the receiving unit 74.
  • the at least one, usually digital output signal received in the receiving unit 74 is optionally subjected to a further signal processing 78 within the receiving unit 74 and output as an audio signal.
  • a bidirectional connection 76 is provided between the receiving device 66 and the receiving unit 74 via the cable.
  • receiving control signals or tuner control signals can be provided to the receiving device 66 via the connection formed as a cable 76.
  • a voltage supply of the receiving device 66 is provided to the receiving device 66 via the connection formed as a cable 76.
  • the reception control signals may include tuning information, the information of a receiver band to be selected and alternative frequencies to be tested in the context of an RDS strategy, which in this example is provided in a controller of the head unit-trained receiver. unit 74 is processed. But also the relocation of the RDS strategy in the trained as DDA tuner box receiving device 66 is conceivable.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Superheterodyne Receivers (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

L'invention concerne un procédé de fourniture d'au moins un signal de sortie pour une unité de réception (56), au moins un premier signal de réception étant reçu par au moins une première antenne (44) et au moins un deuxième signal de réception étant reçu par au moins une deuxième antenne (46). Chaque signal de réception est traité. Les signaux de réception traités sont combinés ensemble par une opération de calcul, ce qui produit au moins un signal de sortie. Ledit au moins un signal de sortie ainsi produit est fourni à l'unité de réception (56) par une liaison (54).
PCT/EP2010/068453 2009-12-09 2010-11-30 Procédé de fourniture d'au moins un signal de sortie WO2011069859A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN2010800557053A CN102652403A (zh) 2009-12-09 2010-11-30 用于提供至少一个输出信号的方法
RU2012128654/07A RU2563028C2 (ru) 2009-12-09 2010-11-30 Способ и устройство для получения по меньшей мере одного выходного сигнала
EP10795636A EP2510636A2 (fr) 2009-12-09 2010-11-30 Procédé de fourniture d'au moins un signal de sortie

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009047722.5 2009-12-09
DE200910047722 DE102009047722A1 (de) 2009-12-09 2009-12-09 Verfahren zum Bereitstellen mindestens eines Ausgangssignals

Publications (2)

Publication Number Publication Date
WO2011069859A2 true WO2011069859A2 (fr) 2011-06-16
WO2011069859A3 WO2011069859A3 (fr) 2011-11-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/068453 WO2011069859A2 (fr) 2009-12-09 2010-11-30 Procédé de fourniture d'au moins un signal de sortie

Country Status (5)

Country Link
EP (1) EP2510636A2 (fr)
CN (1) CN102652403A (fr)
DE (1) DE102009047722A1 (fr)
RU (1) RU2563028C2 (fr)
WO (1) WO2011069859A2 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004062000A1 (de) 2004-12-23 2006-07-06 Robert Bosch Gmbh Antennendiversity-Einrichtung
DE102006006266A1 (de) 2005-02-13 2006-08-24 Lindenmeier, Heinz, Prof. Dr. Ing. Anlage zum Empfang von digital modulierten Funksignalen zu einem Fahrzeug unter Verwendung von Antennendiversity
DE102006039357A1 (de) 2005-09-12 2007-03-15 Lindenmeier, Heinz, Prof. Dr. Ing. Antennendiversityanlage zum Funkempfang für Fahrzeuge

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Publication number Priority date Publication date Assignee Title
RU94037823A (ru) * 1994-10-07 1996-09-10 Акционерное общество открытого типа "Информационные телекоммуникационные технологии" Адаптивное антенное приемное устройство
CN1206257A (zh) * 1997-06-17 1999-01-27 汤姆森多媒体公司 微波信号接收电路的操纵约定及实现该约定的设备
RU2254593C1 (ru) * 2003-10-14 2005-06-20 Федеральное государственное унитарное предприятие "Государственный московский завод "Салют" Корабельная трехкоординатная радиолокационная станция и антенное устройство для нее
US8588710B2 (en) * 2005-10-05 2013-11-19 Telecom Italia S.P.A. Method and system for multiple antenna communications, related apparatus and corresponding computer program product
DE102006057520A1 (de) * 2005-12-15 2007-06-21 Lindenmeier, Heinz, Prof. Dr. Ing. Empfangsanlage mit Gleichphasung von Antennensignalen
US8155610B2 (en) * 2008-05-30 2012-04-10 Silicon Laboratories Inc. Combining multiple frequency modulation (FM) signals in a receiver
DE102008047978A1 (de) * 2008-09-18 2010-03-25 Delphi Delco Electronics Europe Gmbh Diversity-Empfangssystem

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004062000A1 (de) 2004-12-23 2006-07-06 Robert Bosch Gmbh Antennendiversity-Einrichtung
DE102006006266A1 (de) 2005-02-13 2006-08-24 Lindenmeier, Heinz, Prof. Dr. Ing. Anlage zum Empfang von digital modulierten Funksignalen zu einem Fahrzeug unter Verwendung von Antennendiversity
DE102006039357A1 (de) 2005-09-12 2007-03-15 Lindenmeier, Heinz, Prof. Dr. Ing. Antennendiversityanlage zum Funkempfang für Fahrzeuge

Also Published As

Publication number Publication date
DE102009047722A1 (de) 2011-06-16
CN102652403A (zh) 2012-08-29
RU2012128654A (ru) 2014-01-20
WO2011069859A3 (fr) 2011-11-10
EP2510636A2 (fr) 2012-10-17
RU2563028C2 (ru) 2015-09-20

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