SE9402493L - Method in a diversity receiver - Google Patents

Method in a diversity receiver

Info

Publication number
SE9402493L
SE9402493L SE9402493A SE9402493A SE9402493L SE 9402493 L SE9402493 L SE 9402493L SE 9402493 A SE9402493 A SE 9402493A SE 9402493 A SE9402493 A SE 9402493A SE 9402493 L SE9402493 L SE 9402493L
Authority
SE
Sweden
Prior art keywords
antenna
reception quality
message
assess
bit pattern
Prior art date
Application number
SE9402493A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE9402493D0 (en
Inventor
Dag E Son Aakerberg
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE9402493A priority Critical patent/SE9402493L/en
Publication of SE9402493D0 publication Critical patent/SE9402493D0/en
Priority to AU29945/95A priority patent/AU2994595A/en
Priority to PCT/SE1995/000786 priority patent/WO1996002984A1/en
Publication of SE9402493L publication Critical patent/SE9402493L/en

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
    • H04B7/0802—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 antenna selection
    • H04B7/0805—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 antenna selection with single receiver and antenna switching
    • H04B7/0808—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 antenna selection with single receiver and antenna switching comparing all antennas before reception
    • H04B7/0811—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 antenna selection with single receiver and antenna switching comparing all antennas before reception during preamble or gap period
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/046—Speed or phase control by synchronisation signals using special codes as synchronising signal using a dotting sequence

Landscapes

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

Abstract

A method of selecting in a DECT-type radio communications system in which the mobile stations have antenna diversity, i.e. two antennas (A1, A2), that antenna which will provide the best reception quality (e.g. the smallest bit error rate). The radio system transmits the messages, which include a preamble, i.e. an introductory part (P), prior to the actual message information (D). This message preamble includes a specific bit pattern 01010101... and can be used to synchronize the receiver of the mobile station. According to the proposed method, the bit pattern is divided into two parts (P1 and P2). Upon receipt of the message, the first part (P1) is used to assess the reception quality of one antenna and the second part (P2) is used to assess the reception quality of the second antenna. The measured qualities are then compared and that antenna which is found to have the best reception quality is selected to receive the following information message (D).
SE9402493A 1994-07-15 1994-07-15 Method in a diversity receiver SE9402493L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9402493A SE9402493L (en) 1994-07-15 1994-07-15 Method in a diversity receiver
AU29945/95A AU2994595A (en) 1994-07-15 1995-06-27 A method in a diversity receiver
PCT/SE1995/000786 WO1996002984A1 (en) 1994-07-15 1995-06-27 A method in a diversity receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9402493A SE9402493L (en) 1994-07-15 1994-07-15 Method in a diversity receiver

Publications (2)

Publication Number Publication Date
SE9402493D0 SE9402493D0 (en) 1994-07-15
SE9402493L true SE9402493L (en) 1996-01-16

Family

ID=20394740

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9402493A SE9402493L (en) 1994-07-15 1994-07-15 Method in a diversity receiver

Country Status (3)

Country Link
AU (1) AU2994595A (en)
SE (1) SE9402493L (en)
WO (1) WO1996002984A1 (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4421643C2 (en) * 1994-06-21 1999-09-02 Siemens Ag Antenna diversity radio reception arrangement for telecommunication systems with a block-oriented transmission of radio messages and antenna selection method in such an antenna diversity radio reception arrangement
JP3319688B2 (en) * 1996-05-14 2002-09-03 松下通信工業株式会社 Data receiving device
EP0931389A1 (en) * 1996-09-04 1999-07-28 Ascom Systec AG Preamble for the assessment of channel impulse response in a antenna diversity system
CA2188845A1 (en) * 1996-10-25 1998-04-25 Stephen Ross Todd Diversity Antenna Selection
US5960046A (en) * 1996-12-03 1999-09-28 Northern Telecom Limited Preamble based selection diversity in a time division multiple access radio system
US6032033A (en) * 1996-12-03 2000-02-29 Nortel Networks Corporation Preamble based selection diversity in a time division multiple access radio system using digital demodulation
FI108762B (en) * 1996-12-10 2002-03-15 Nokia Corp Method for achieving diversity, and base station device
US6694372B1 (en) 1997-06-17 2004-02-17 Advanced Micro Devices, Inc. Method and system for effective network communication of an unsupported media standard by encapsulated packet tagging
JP4020458B2 (en) 1997-06-19 2007-12-12 三菱電機株式会社 Wireless communication system, data transmitter and data receiver
US5952963A (en) * 1997-12-30 1999-09-14 Ericsson Inc. Advanced antenna diversity mechanism
WO1999034534A1 (en) * 1997-12-30 1999-07-08 Ericsson, Inc. A unified antenna diversity switching system for tdma-based telephones
US6483884B1 (en) * 1997-12-30 2002-11-19 Ericsson Inc. Antenna diversity switching system for TDMA-based telephones
SE511365C2 (en) 1998-01-23 1999-09-20 Ericsson Telefon Ab L M antenna switching
NL1008198C2 (en) * 1998-02-04 1999-08-05 Ericsson Telefon Ab L M Radio receiver with switched diversity.
JP3362699B2 (en) * 1999-06-10 2003-01-07 日本電気株式会社 Spatial transmission / reception diversity communication system
DE19957595C2 (en) * 1999-11-30 2002-01-31 Fraunhofer Ges Forschung DECT send / receive terminal and method for communicating between a DECT send / receive terminal and a DECT base station
DK1186120T3 (en) 1999-11-30 2003-04-28 Fraunhofer Ges Forschung Dect transmit / receive terminal and method of communication between a dect transmit / receive terminal and a dect base station
DE19958118A1 (en) * 1999-12-02 2001-05-23 Infineon Technologies Ag Antenna selection method for radio data transmission system
WO2002052749A1 (en) * 2000-12-22 2002-07-04 Telefonaktiebolaget L M Ericsson (Publ) Method and device for signal transmission in wireless applications using antenna diversity
FR2833435B1 (en) 2001-12-06 2004-02-27 Thomson Licensing Sa RECEPTION PATH SELECTION METHOD AND RECEPTION DEVICE INCLUDING SEVERAL RECEPTION PATHS
US7274759B2 (en) * 2001-12-21 2007-09-25 Koninklijke Philips Electronics N.V. Antenna switching based on a preamble MSE metric
JP4212548B2 (en) 2003-12-26 2009-01-21 株式会社東芝 Wireless transmission device, wireless reception device, wireless transmission method, and wireless reception method
US7742533B2 (en) 2004-03-12 2010-06-22 Kabushiki Kaisha Toshiba OFDM signal transmission method and apparatus
US7339390B2 (en) 2005-05-31 2008-03-04 International Business Machines Corporation Systems and methods for controlling of electro-migration
JP4301239B2 (en) * 2005-12-09 2009-07-22 ブラザー工業株式会社 Cordless communication device
FR2932627B1 (en) 2008-06-13 2011-03-18 Sagem Defense Securite MOBILE TERMINAL OF A DECT-TYPE RADIOFREQUENCY WAVE COMMUNICATION SYSTEM AND METHOD OF MANAGING ANTENNAS OF THIS TERMINAL
DE102010048483A1 (en) * 2010-10-14 2011-05-19 Daimler Ag Method for using radio link by portable mobile telephone in e.g. lorry, involves receiving messages by antennas, selecting one of antennas depending on reception criteria of messages, and using radio link by selected antennas

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5020056A (en) * 1989-05-02 1991-05-28 General Electric Company Reduction of synchronous fading effects by time hopping of user slots in TDMA frames
EP0454585B1 (en) * 1990-04-27 1994-08-03 Nippon Telegraph And Telephone Corporation An antenna selection diversity reception system
US5369801A (en) * 1992-09-25 1994-11-29 Northern Telecom Limited Antenna diversity reception in wireless personal communications
WO1994010764A1 (en) * 1992-10-26 1994-05-11 Siemens Aktiengesellschaft Method and installation for antenna-selection diversity in a wireless telephone receiver
DE4236089A1 (en) * 1992-10-26 1994-04-28 Siemens Ag Method and arrangement for activating antennas of a radio transceiver
DE4236134A1 (en) * 1992-10-26 1994-06-30 Siemens Ag Method and arrangement for activating one of two antennas of a receiving device
US5446922A (en) * 1992-12-21 1995-08-29 Motorola, Inc. Method and apparatus for switched diversity reception of a radio signal

Also Published As

Publication number Publication date
WO1996002984A1 (en) 1996-02-01
SE9402493D0 (en) 1994-07-15
AU2994595A (en) 1996-02-16

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