EP2497208A1 - Procédé et système permettant de réduire les parasites dans un signal de réception - Google Patents

Procédé et système permettant de réduire les parasites dans un signal de réception

Info

Publication number
EP2497208A1
EP2497208A1 EP10775797A EP10775797A EP2497208A1 EP 2497208 A1 EP2497208 A1 EP 2497208A1 EP 10775797 A EP10775797 A EP 10775797A EP 10775797 A EP10775797 A EP 10775797A EP 2497208 A1 EP2497208 A1 EP 2497208A1
Authority
EP
European Patent Office
Prior art keywords
transmission
signal
antenna
transmission signal
unit
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP10775797A
Other languages
German (de)
English (en)
Inventor
Udo Stang
Thomas Wagner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive GmbH
Original Assignee
Continental Automotive 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 Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP2497208A1 publication Critical patent/EP2497208A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2215/00—Reducing interference at the transmission system level
    • H04B2215/061—Reduction of burst noise, e.g. in TDMA systems
    • H04B2215/062—Reduction of burst noise, e.g. in TDMA systems by inhibiting burst transmission

Definitions

  • the invention relates to a method and an arrangement for reducing interference caused in a received signal of a receiving antenna by a transmission signal of a spatially closely adjacent transmitting antenna.
  • SDARS receiver are disturbed by sidebands of the WLAN channels (for example, by overdriving a usually very sensitive input amplifier of the SDARS arrangement).
  • An independent, simultaneous operation of, for example, an SDARS satellite receiver and a WLAN-based data transmission arrangement therefore leads to unwanted interference in SDARS reception. Similar problems can also occur with a close spatial arrangement of several mutually influencing WLAN antennas or WLAN and
  • WIMAX antennas occur. Reduction of such disturbances by, for example, high frequency filtering in an SDARS preamplifier is and limited due to the small available space. Such filtering would also transition booster of a signal reception path countries the predetermined characteristic of the A ⁇ undesirable changes.
  • the object of the present invention is to provide a method for reducing interference caused in a received signal of a receiving antenna by a transmission signal of a spatially closely adjacent transmitting antenna, in which the mentioned disadvantages are avoided.
  • the object is in particular achieved by a method for reducing ne in a received signal of a Empfangsanten- by a transmission signal with temporally stochastically distributed transmission data of a spatially closely adjacent transmission antenna caused interference in which the transmission of the transmission signal of the transmitting antenna recurrently disabled for a respective time ⁇ duration is such that the caused by the occurrence of the transmission signal disturbances of Empfangssig ⁇ nals are fully ⁇ constantly corrected by an error correction for the received signal.
  • the arrangement according to the invention comprises a receiving antenna for receiving received signals, a transmitting antenna spatially close to the receiving antenna for transmitting a transmission signal with time-stochastically distributed transmission data, a transmitting unit connected to the transmitting antenna for this purpose, a receiving unit connected to the receiving antenna, an error correcting unit, and a control ⁇ circuit, wherein the control circuit recurring each for a respective time period deactivates the sending of the transmission signal such that upon the occurrence of the transmission signal caused disturbances of the received signal by the Feh ⁇ lerkorrekturtechnik for the received signal are completely korri ⁇ siege.
  • FIG. 1 shows a block diagram and a time diagram of a first exemplary sequence of the method according to the invention
  • FIG. 2 shows a block diagram and a time diagram of a second exemplary sequence of the method according to the invention
  • FIG. 3 shows a block diagram and a time diagram of a third exemplary of the method according to the invention.
  • FIG. 4 shows in a block diagram an arrangement for carrying out the method according to the invention according to FIG. 3.
  • FIG. 1 shows a block diagram and a time diagram of an exemplary sequence of the method according to the invention.
  • An arrangement shown in FIG. 1 comprises a receiving antenna 1 and a transmitting antenna 3 arranged spatially close thereto, a receiving unit 8 connected to the receiving antenna 1 and an error correction unit 14, which is integrated into the receiving unit 8 by way of example.
  • ⁇ see connected to the transmitting antenna 3 transmission unit 7 is provided ⁇ see, which can also be formed as a transmitting and receiving unit when the antenna 3 is also used for receiving signals, and a control circuit. 6 "
  • the error correction unit 14 causes to be corrected ⁇ play caused by disorders failures in reception ⁇ signal up to a certain degree. This means that the reception failure of a certain maxima len proportionate duration of a predetermined time period can be corrected, such as reception failures that occur pro rata for a period of more than 25% of the predetermined time duration ⁇ .
  • the transmission of the transmission signal so activated in its time course or deakti ⁇ is fourth that the maximum correction capability of the error ⁇ correction 14 is not exceeded .
  • a control signal 5 is to generated by the control circuit 6, this was true, the transmission ⁇ signal 2 of the transmitting antenna 3 periodically each an be ⁇ maximum proportionate duration 9 (e.g., 25%) ei ⁇ ner predetermined Time duration 10 activated.
  • the particular maximum period of time proportional 9 ⁇ those time duration for which the error correction can correct just 14 reception failures of the received signal of the receiving antenna 1 also corresponds.
  • the control signal 5 thus controls the coexistence of transmission and reception periods and can be, for example, a suitably designed pulse width modulated signal.
  • a broadcast signal 2 actually sent Da ⁇ th not only be continuous but as temporally distributed stochastically occur, as is commonly used in wireless communications the case.
  • An example of this is the transmitted data signal of a WLAN data transmission, as exemplified by the course of the
  • Curve 4 is shown in Figure 1.
  • a high level of the curve 4 means that WLAN data is present in the transmission signal 2
  • a low level indicates that there are none at this time WLAN data in the transmission signal 2 are present.
  • From the described course of the curves 4 and 5 results in accordance with curve 2 is ⁇ Asked course actually sent WLAN data. This corresponds to a pulse width modulation of the transmitted WLAN data.
  • Transmit signal 2 is deactivated over a large range of the data sequence (see signal portion 11 of the curve 5 with high Pe ⁇ gel, t2 to t3).
  • a portion transmitted (see curve 2, t5 to t6), which corresponds to the maximum proportionate time 9 of the predetermined time period 10 (see curve 2 and time ⁇ onset of maximum pro rata period 9 in curve 5). Due to the stochastic temporal distribution of the WLAN data in the transmission signal 2, a strongly fluctuating proportion of the WLAN data actually transmitted in accordance with the method according to FIG. 1 results if the complete error correction of the reception signal of the reception antenna 1 is ensured.
  • the received signal of the receiving antenna 1 is a continuous received signal, such as the signal of a digita ⁇ len satellite radio (SDARS). Due to the strong swan ⁇ kenden share of actually transmitted wireless data individual data packets according to wireless specification must übertra ⁇ gen (emitted) and the data transmission speed decreases again. Further, as shown in the following Figu ⁇ ren embodiments of the method aim to minimize this reduction in data transmission speed.
  • SDARS digita ⁇ len satellite radio
  • the exemplary embodiment according to FIG. 2 in turn comprises a receiving antenna 1 and a spatially close thereto Transmitting antenna 3, a receiving unit 8 connected to the receiving antenna 1 and an error correction unit 14, which is integrated into the receiving unit 8 by way of example.
  • control circuit forming the control circuit 6 is the information for
  • the control circuit 6 causes the transmission signal 2, for example, in an active state (see Pe- lower gel curve 5) which is initially maintained until the Sendesig ⁇ nal 2 transmit data 4 are present (time t7). From this point on, the transmission signal 2 is then left in the active state for the maximum proportionate time period 9 (t7 to t8) and subsequently the transmission of the transmission signal 2 for the remaining time 11 (see high level curve 5) of the predetermined time period 10 is deactivated to satisfy the conditions of the error correction 14.
  • the actual occurrence of stochastically distributed transmission data 4 is taken into account in the transmit signal 2 in order to achieve improved data ⁇ transmission of the transmit signal 2 in the method shown in FIG. 2
  • the control circuit may activate the transmission signal 2 and only then for the maximum rata period 9 6, when transmission data 4 are present in the broadcast signal 2 and subsequently clear the transmission of the transmission signal 2 for the ver ⁇ remaining period 11 of the predetermined period of time 10th
  • Figure 3 shows in a block diagram and a time chart of another embodiment of the invention with Ver ⁇ driving in turn a receiving antenna 1 and a flush ⁇ Lich arranged close to the transmitting antenna 3, one with the recom- fang antenna 1 receiving unit 8 and a connected Def ⁇ lerkorrekturtechnik 14, which is exemplary integrated into the Empfangsein ⁇ uniform. 8 And is further connected to said transmission transformants ⁇ ne 3 transmitter unit 7 which may be of the slotted unit as transmitter and receiver when the antenna is 3 also serve for receiving signals, a control circuit 6 is provided.
  • the control circuit 6 is provided with the information via a signal 13 in this embodiment when the reception unit 8 connected to the reception antenna 1 is too low reception quality and / or error correction reserve. This is the case in the example shown at time t11 when the curve 13 shown in FIG. 3 has a high level denoted by 12. In this case, the transmission of the transmission signal 2 after a successful activation already then (time tll) is deactivated again by the control scarf ⁇ device 6 when the reception unit 8 connected to the receiving antenna 1 too low reception quality and / or error correction reserve (see 12 in curve 13).
  • FIG. 4 shows a block diagram of an example of an implementation of the method in or on a vehicle, for example.
  • the arrangement shown in FIG. 4 comprises an A receiving antenna 1 and a spatially close thereto arranged transmitting / receiving antenna 3, an associated with the receiving antenna 1 SDARS receiving unit 8 with an error correction unit 14, which is for example integrated into the receiving unit 8.
  • a WLAN connected to the transmitting antenna 3 is
  • Transceiver unit 7 with transmitting and receiving controller 17, a signal generating unit 18, a signal inverter 19, a signal generating unit 20, an adding unit 21, a register 22, a digital comparator 23 and two Hochfre- quenzumschalter 15 and 16 are provided.
  • the transmitting / receiving antenna 3 is connected for transmission with the transmission signal 2 of the WLAN transmitting / receiving unit 7 or for receiving signals with an integrated in the WLAN transmitting / receiving unit 7 receiving device, wherein in the drawing of Switching state is shown, in which the transmitting / receiving antenna 3 is connected for transmission.
  • the receiving antenna 1 is separated for each of the period from the SDARS receiving unit 8, for which the transmitting / receiving antenna 3 is connected to transmit (see Figure 4), so that interference signals of the transmitting / receiving ⁇ antenna 3 no undesirable Abregelung the sensitivity of an input amplifier of the SDARS receiving unit 8 may result.
  • the high-frequency switches 15 and 16 are connected to the transmitting and receiving controller 17 of the WLAN transmitting / receiving unit 7.
  • the transmit and receive controller 17 generates for this purpose a corresponding status signal 25, which indicates the transmission mode.
  • This status signal 25 is also used to drive the control circuit 6.
  • the control circuit 6 has the Sig ⁇ nalerzeugungsaku 18, the signal inverter 19, the Sig ⁇ nalerzeugungsaku 20, the adder 21, the register 22 and the digital comparator 23rd
  • the control circuit is activated periodically over a sampling clock signal 24 in order to process the status signal 25 and the formed therefrom As ⁇ th.
  • the signal generating unit 18 and the signal generation unit 20 with upstream signaled linvertierer 19 connected to the status signal 25 of the transmission and Emp ⁇ scavenging control 17th
  • the adding unit 21 is set up so that an overflow smaller than zero and an overflow greater than a predetermined maximum value are prevented.
  • he ⁇ is a sum less than zero
  • the sum is set to zero, resulting in a sum greater than the predetermined maximum value
  • the sum is set to the predetermined maximum value of the counter.
  • the respective result of the adding unit 21 in the respective sampling cycle is stored in the register 22 in inter mediate ⁇ .
  • the clock ratio between active and inactive WLAN transmission mode results in:
  • WLANincred / WLANEN l / (n + l) 1
  • the digital comparator 23 compares the current value of the register 22 with the predetermined value 10 for the time interval to be considered, to which the percentile ⁇ le time duration for the transmission mode of the WLAN transmitting / receiving unit 7 is related and controls as a result, the WLAN Transmission enable via the control signal 5.

Landscapes

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

Abstract

L'invention concerne un procédé et un système permettant de réduire les parasites provoqués dans un signal de réception d'une antenne de réception par un signal d'émission contenant des données d'émission réparties de manière stochastique dans le temps d'une antenne d'émission très proche dans l'espace. Selon l'invention, l'émission du signal d'émission de l'antenne d'émission est activée ou désactivée dans le temps par un signal de commande d'un circuit de commande de telle manière que les pertes de réception du signal de réception provoquées par les parasites sont corrigées par une unité de correction d'erreurs pour le signal de réception.
EP10775797A 2009-11-04 2010-11-02 Procédé et système permettant de réduire les parasites dans un signal de réception Withdrawn EP2497208A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009051817.7A DE102009051817B4 (de) 2009-11-04 2009-11-04 Verfahren und Anordnung zur Verringerung von Störungen in einem Empfangssignal
PCT/EP2010/066618 WO2011054810A1 (fr) 2009-11-04 2010-11-02 Procédé et système permettant de réduire les parasites dans un signal de réception

Publications (1)

Publication Number Publication Date
EP2497208A1 true EP2497208A1 (fr) 2012-09-12

Family

ID=43430700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10775797A Withdrawn EP2497208A1 (fr) 2009-11-04 2010-11-02 Procédé et système permettant de réduire les parasites dans un signal de réception

Country Status (4)

Country Link
US (1) US8583069B2 (fr)
EP (1) EP2497208A1 (fr)
DE (1) DE102009051817B4 (fr)
WO (1) WO2011054810A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013071966A1 (fr) * 2011-11-16 2013-05-23 Telefonaktiebolaget L M Ericsson (Publ) Test d'interférence radio pour dispositifs radio multiples

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US6107960A (en) * 1998-01-20 2000-08-22 Snaptrack, Inc. Reducing cross-interference in a combined GPS receiver and communication system
GB2339646A (en) 1998-07-15 2000-02-02 Ericsson Telefon Ab L M Reduction of Interference between Radio Links
EP1788723A3 (fr) 2001-05-10 2011-10-05 Qualcomm, Incorporated Dispositif de communication multi-mode avec emplacement de position
US20020193108A1 (en) * 2001-05-10 2002-12-19 Robinett Robert L. Multi-mode satellite and terrestrial communication device with position location
US7865167B2 (en) 2002-06-05 2011-01-04 Nokia Corporation Digital video broadcast-terrestrial (DVB-T) receiver interoperable with a GSM transmitter in a non-interfering manner
JP4214992B2 (ja) 2004-12-13 2009-01-28 パナソニック株式会社 高周波受信器とこれに用いる集積回路及び、これらを用いた携帯機器、ならびにこれに用いる送信器と、前記高周波受信器および前記携帯機器の製造方法
EP1675287A1 (fr) 2004-12-22 2006-06-28 Siemens Aktiengesellschaft Gestion d'interférences radio dans un dispositif, procédé et programme
US7440730B2 (en) * 2005-06-30 2008-10-21 Intel Corporation Device, system and method of multiple transceivers control
US20080119140A1 (en) * 2006-11-21 2008-05-22 James Maligeorgos System and method for reducing interference in a highly integrated radio frequency apparatus
US8537772B2 (en) * 2009-07-02 2013-09-17 Qualcomm Incorporated Transmitter quieting during spectrum sensing

Non-Patent Citations (1)

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Title
See references of WO2011054810A1 *

Also Published As

Publication number Publication date
DE102009051817A1 (de) 2011-05-05
US20120207194A1 (en) 2012-08-16
US8583069B2 (en) 2013-11-12
WO2011054810A1 (fr) 2011-05-12
DE102009051817B4 (de) 2018-06-14

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