CA2149364A1 - Diversity reception device - Google Patents

Diversity reception device

Info

Publication number
CA2149364A1
CA2149364A1 CA002149364A CA2149364A CA2149364A1 CA 2149364 A1 CA2149364 A1 CA 2149364A1 CA 002149364 A CA002149364 A CA 002149364A CA 2149364 A CA2149364 A CA 2149364A CA 2149364 A1 CA2149364 A1 CA 2149364A1
Authority
CA
Canada
Prior art keywords
reception signal
reception
sine
cosine
phase
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.)
Granted
Application number
CA002149364A
Other languages
French (fr)
Other versions
CA2149364C (en
Inventor
Toshinori Iinuma
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.)
Kyocera Corp
Original Assignee
Individual
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 JP06101027A external-priority patent/JP3091634B2/en
Priority claimed from JP06231518A external-priority patent/JP3091649B2/en
Application filed by Individual filed Critical Individual
Publication of CA2149364A1 publication Critical patent/CA2149364A1/en
Application granted granted Critical
Publication of CA2149364C publication Critical patent/CA2149364C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04B7/0865—Independent weighting, i.e. weights based on own antenna reception parameters

Abstract

A diversity reception device which weights in proportion to the reception level and combines a plurality of reception signals, includes a phase demodulator for demodulating the phase of the reception signal, a converter to output the sine and cosine elements of the reception signal, a sine element adder to add up sine element of each reception signal, and a cosine element adder to add up cosine element of each reception signal. The converter fetches and outputs predetermined values on sine and cosine elements of the reception signal upon input of the reception signal's reception level and phase data that is sent from phase demodulator. Therefore, the present device does not require expensive electronic circuits and can be made of small digital circuits suitable for IC including a memory.
CA002149364A 1994-05-16 1995-05-15 Diversity reception device Expired - Fee Related CA2149364C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP06101027A JP3091634B2 (en) 1994-05-16 1994-05-16 Diversity device
JP6-101027 1994-05-16
JP06231518A JP3091649B2 (en) 1994-09-27 1994-09-27 Diversity device
JP6-231518 1994-09-27

Publications (2)

Publication Number Publication Date
CA2149364A1 true CA2149364A1 (en) 1995-11-17
CA2149364C CA2149364C (en) 2005-05-10

Family

ID=26441955

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002149364A Expired - Fee Related CA2149364C (en) 1994-05-16 1995-05-15 Diversity reception device

Country Status (6)

Country Link
US (3) US5761252A (en)
EP (1) EP0683571B1 (en)
CN (1) CN1078409C (en)
CA (1) CA2149364C (en)
DE (1) DE69531325T2 (en)
MY (1) MY113061A (en)

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MY113061A (en) * 1994-05-16 2001-11-30 Sanyo Electric Co Diversity reception device
JP3286885B2 (en) * 1995-11-07 2002-05-27 三菱電機株式会社 Timing recovery means and diversity communication device
JP3162980B2 (en) * 1995-11-22 2001-05-08 三洋電機株式会社 Diversity device
KR0168796B1 (en) * 1996-03-27 1999-02-01 김광호 Normalized circuit for preventing normalized voltage divergence
JPH1028108A (en) * 1996-07-11 1998-01-27 Nec Corp Synthetic diversity receiving system
JPH1070497A (en) * 1996-08-27 1998-03-10 Saitama Nippon Denki Kk Method for synthesizing reception signal from diversity system radio equipment
CA2214743C (en) * 1996-09-20 2002-03-05 Ntt Mobile Communications Network Inc. A frame synchronization circuit and communications system
JPH11112462A (en) * 1997-08-08 1999-04-23 Sony Corp Receiver for digital broadcast
GB2332124B (en) * 1997-12-05 2002-07-17 British Broadcasting Corp Digital radio communication system
US6389085B1 (en) * 1998-01-14 2002-05-14 Wavecom Electronics Inc. Receiver combiner for spatial diversity digital communications
US6115930A (en) * 1998-06-11 2000-09-12 Fuji Photo Film Co., Ltd. Method and laminated member for measuring gap dimension
US6091940A (en) 1998-10-21 2000-07-18 Parkervision, Inc. Method and system for frequency up-conversion
US7515896B1 (en) 1998-10-21 2009-04-07 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships
US6694128B1 (en) 1998-08-18 2004-02-17 Parkervision, Inc. Frequency synthesizer using universal frequency translation technology
US6061551A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for down-converting electromagnetic signals
US6049706A (en) 1998-10-21 2000-04-11 Parkervision, Inc. Integrated frequency translation and selectivity
US7039372B1 (en) 1998-10-21 2006-05-02 Parkervision, Inc. Method and system for frequency up-conversion with modulation embodiments
US6560301B1 (en) 1998-10-21 2003-05-06 Parkervision, Inc. Integrated frequency translation and selectivity with a variety of filter embodiments
US6061555A (en) 1998-10-21 2000-05-09 Parkervision, Inc. Method and system for ensuring reception of a communications signal
US6370371B1 (en) 1998-10-21 2002-04-09 Parkervision, Inc. Applications of universal frequency translation
US6813485B2 (en) 1998-10-21 2004-11-02 Parkervision, Inc. Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same
US6542722B1 (en) 1998-10-21 2003-04-01 Parkervision, Inc. Method and system for frequency up-conversion with variety of transmitter configurations
US7236754B2 (en) 1999-08-23 2007-06-26 Parkervision, Inc. Method and system for frequency up-conversion
DE69830428T2 (en) * 1998-12-25 2006-01-26 Sanyo Electric Co., Ltd., Moriguchi DECODING ERROR-FREE DIVERSITY RECEIVER, AND CIRCUIT FOR RECOVERING VALUE FOR DIVERSITY RECEIVERS
US6442130B1 (en) * 1999-01-21 2002-08-27 Cisco Technology, Inc. System for interference cancellation
US6704549B1 (en) 1999-03-03 2004-03-09 Parkvision, Inc. Multi-mode, multi-band communication system
US6704558B1 (en) 1999-01-22 2004-03-09 Parkervision, Inc. Image-reject down-converter and embodiments thereof, such as the family radio service
US6449469B1 (en) * 1999-03-01 2002-09-10 Visteon Global Technologies, Inc. Switched directional antenna for automotive radio receivers
US6308054B2 (en) * 1999-03-02 2001-10-23 Hitachi, Ltd. Diversity wireless communication method and its wireless communication apparatus
US6853690B1 (en) 1999-04-16 2005-02-08 Parkervision, Inc. Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments
US6879817B1 (en) 1999-04-16 2005-04-12 Parkervision, Inc. DC offset, re-radiation, and I/Q solutions using universal frequency translation technology
US7065162B1 (en) 1999-04-16 2006-06-20 Parkervision, Inc. Method and system for down-converting an electromagnetic signal, and transforms for same
US7693230B2 (en) 1999-04-16 2010-04-06 Parkervision, Inc. Apparatus and method of differential IQ frequency up-conversion
US7110444B1 (en) 1999-08-04 2006-09-19 Parkervision, Inc. Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations
US8295406B1 (en) 1999-08-04 2012-10-23 Parkervision, Inc. Universal platform module for a plurality of communication protocols
JP2001230709A (en) 2000-02-17 2001-08-24 Nec Shizuoka Ltd Diversity receiver
US6714774B1 (en) * 2000-02-24 2004-03-30 Texas Instruments Incorporated Antenna reception diversity in wireless communications
US7010286B2 (en) 2000-04-14 2006-03-07 Parkervision, Inc. Apparatus, system, and method for down-converting and up-converting electromagnetic signals
US7454453B2 (en) 2000-11-14 2008-11-18 Parkervision, Inc. Methods, systems, and computer program products for parallel correlation and applications thereof
US6990059B1 (en) 2001-09-05 2006-01-24 Cisco Technology, Inc. Interference mitigation in a wireless communication system
US7855948B2 (en) * 2001-09-05 2010-12-21 Cisco Technology, Inc. Interference mitigation in a wireless communication system
US7072427B2 (en) 2001-11-09 2006-07-04 Parkervision, Inc. Method and apparatus for reducing DC offsets in a communication system
US7103118B2 (en) * 2001-11-26 2006-09-05 Dataradio Inc. Vectorial combiner for diversity reception in RF tranceivers
FI20012581A0 (en) * 2001-12-27 2001-12-27 Nokia Corp Interference elimination method in communication system
US7460584B2 (en) 2002-07-18 2008-12-02 Parkervision, Inc. Networking methods and systems
US7379883B2 (en) 2002-07-18 2008-05-27 Parkervision, Inc. Networking methods and systems
US7006809B2 (en) * 2003-05-06 2006-02-28 Ami Semiconductor, Inc. Adaptive diversity receiver architecture
US7499696B2 (en) * 2003-11-26 2009-03-03 Delphi Technologies, Inc. Method to optimize hierarchical modulation for a diversity system
US7260370B2 (en) * 2003-12-10 2007-08-21 James June-Ming Wang Wireless communication system using a plurality of antenna elements with adaptive weighting and combining techniques
US7046064B1 (en) * 2004-04-02 2006-05-16 Thomas Jefferson Runaldue Clock generation with continuous phase
US7856215B2 (en) * 2006-12-06 2010-12-21 Broadcom Corp. Method and system for using a multi-RF input receiver for diversity selection
CN102148787A (en) * 2010-02-10 2011-08-10 思亚诺移动芯片有限公司 Method, circuit and system for reducing or eliminating receiving signal noises
JP5639667B2 (en) * 2011-01-26 2014-12-10 ルネサスエレクトロニクス株式会社 Decision feedback equalizer

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* Cited by examiner, † Cited by third party
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JPS5732535B2 (en) * 1975-02-17 1982-07-12
JPS5588452A (en) * 1978-12-26 1980-07-04 Nec Corp Digital signal switching circuit for diversity receiver for digital radio communication
JP2756477B2 (en) * 1989-06-26 1998-05-25 日本電信電話株式会社 Received level adaptive post-detection combining diversity receiver circuit.
US5280637A (en) * 1991-09-18 1994-01-18 Motorola, Inc. Phase combining method and apparatus for use in a diversity receiver
US5321850A (en) * 1991-10-09 1994-06-14 Telefonaktiebolaget L M Ericsson Diversity radio receiver automatic frequency control
US5465271A (en) * 1993-08-20 1995-11-07 General Electric Company Post detection weighted vector combining diversity receivers using phase metrics for mobile and indoor radio channels
US5461646A (en) * 1993-12-29 1995-10-24 Tcsi Corporation Synchronization apparatus for a diversity receiver
MY113061A (en) * 1994-05-16 2001-11-30 Sanyo Electric Co Diversity reception device

Also Published As

Publication number Publication date
EP0683571A3 (en) 1997-07-16
CA2149364C (en) 2005-05-10
CN1078409C (en) 2002-01-23
EP0683571A2 (en) 1995-11-22
MY113061A (en) 2001-11-30
EP0683571B1 (en) 2003-07-23
US5761252A (en) 1998-06-02
CN1121664A (en) 1996-05-01
DE69531325D1 (en) 2003-08-28
DE69531325T2 (en) 2004-05-13
US5901187A (en) 1999-05-04
US6161001A (en) 2000-12-12

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