GB2304262A - Multiple access up converter/modulator and method - Google Patents

Multiple access up converter/modulator and method

Info

Publication number
GB2304262A
GB2304262A GB9624183A GB9624183A GB2304262A GB 2304262 A GB2304262 A GB 2304262A GB 9624183 A GB9624183 A GB 9624183A GB 9624183 A GB9624183 A GB 9624183A GB 2304262 A GB2304262 A GB 2304262A
Authority
GB
United Kingdom
Prior art keywords
output
coupled
adder
selectively coupled
converter
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Withdrawn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
GB9624183A
Other versions
GB9624183D0 (en
Inventor
Alan P Rottinghaus
Daniel Morris Lurey
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of GB9624183D0 publication Critical patent/GB9624183D0/en
Publication of GB2304262A publication Critical patent/GB2304262A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • 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
    • H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
    • H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
    • 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
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/22—Arrangements for detecting or preventing errors in the information received using redundant apparatus to increase reliability

Abstract

A multiple access digital up converter/modulator includes selectors (1606, 1608) having inputs (1602, 1604) and outputs coupled to first and second interpolating filters (1610, 1626). The output of the first interpolating filter is selectively coupled to a first mixer (1612) and a first adder (1622), the first adder also receiving a first phase value, and the output is coupled to a first phase accumulator (1616) the output of which is coupled to a first sinusoid generator (1614) and selectively coupled to a second sinusoid generator (1630). The outputs of each of the first and second mixers are selectively coupled to an output adder (1634) and to inputs of the first and second mixers. The output of the second interpolating filter (1626) is selectively coupled to a second mixer (1628) and a second adder (1638), which also receives a second phase value and the output of which is coupled to a second phase accumulator (1640) the output of which is selectively coupled to the second sinusoid generator.
GB9624183A 1995-04-03 1996-02-29 Multiple access up converter/modulator and method Withdrawn GB2304262A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US41538795A 1995-04-03 1995-04-03
PCT/US1996/002746 WO1996031942A1 (en) 1995-04-03 1996-02-29 Multiple access up converter/modulator and method

Publications (2)

Publication Number Publication Date
GB9624183D0 GB9624183D0 (en) 1997-01-08
GB2304262A true GB2304262A (en) 1997-03-12

Family

ID=23645488

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9624183A Withdrawn GB2304262A (en) 1995-04-03 1996-02-29 Multiple access up converter/modulator and method

Country Status (17)

Country Link
JP (1) JPH10501674A (en)
KR (1) KR100210633B1 (en)
CN (1) CN1064794C (en)
AU (1) AU695320B2 (en)
BR (1) BR9605951A (en)
CA (1) CA2191098C (en)
DE (1) DE19680328T1 (en)
FI (1) FI964824A (en)
FR (1) FR2732535B1 (en)
GB (1) GB2304262A (en)
IL (1) IL117369A0 (en)
IT (1) IT1284306B1 (en)
MX (1) MX9606016A (en)
PL (1) PL180753B1 (en)
SE (1) SE519826C2 (en)
TW (1) TW287335B (en)
WO (1) WO1996031942A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6034969A (en) * 1998-05-26 2000-03-07 Motorola, Inc. Method and system for cross frame transmit combining of transmit signals
JP5414484B2 (en) * 2009-12-01 2014-02-12 三菱電機株式会社 Fourier transform circuit, receiver and Fourier transform method
US8174441B2 (en) * 2010-06-01 2012-05-08 Mediatek Inc. Configurable calculating circuit and receiver having a plurality of configurable calculating circuits
CN102147473B (en) * 2010-12-17 2012-09-26 航天恒星科技有限公司 Common-frequency multi-system satellite navigation signal generation system
CN110995334B (en) * 2019-12-02 2022-04-19 西安航天天绘数据技术有限公司 Space-based frequency hopping data chain system with multi-channel parallel processing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462001A (en) * 1982-02-22 1984-07-24 Canadian Patents & Development Limited Baseband linearizer for wideband, high power, nonlinear amplifiers
US5325396A (en) * 1989-08-14 1994-06-28 Interdigital Technology Corporation Subscriber unit for wireless digital subscriber communication system
US5412351A (en) * 1993-10-07 1995-05-02 Nystrom; Christian Quadrature local oscillator network
US5412352A (en) * 1994-04-18 1995-05-02 Stanford Telecommunications, Inc. Modulator having direct digital synthesis for broadband RF transmission

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135844B (en) * 1983-02-21 1986-08-28 Nippon Telegraph & Telephone Oscillator with variable frequency and phase
DE3688170T2 (en) * 1985-04-04 1993-07-08 Motorola Inc DIGITAL ZERO-MF SELECTIVE LEVEL.
SE463390B (en) * 1989-03-13 1990-11-12 Ericsson Telefon Ab L M VAAGFORMSGENERATOR
US5111163A (en) * 1991-05-06 1992-05-05 Hughes Aircraft Company Digital FM modulator
US5351016A (en) * 1993-05-28 1994-09-27 Ericsson Ge Mobile Communications Inc. Adaptively self-correcting modulation system and method
US5386202A (en) * 1993-11-03 1995-01-31 Sicom, Inc. Data communication modulation with managed intersymbol interference

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462001A (en) * 1982-02-22 1984-07-24 Canadian Patents & Development Limited Baseband linearizer for wideband, high power, nonlinear amplifiers
US5325396A (en) * 1989-08-14 1994-06-28 Interdigital Technology Corporation Subscriber unit for wireless digital subscriber communication system
US5412351A (en) * 1993-10-07 1995-05-02 Nystrom; Christian Quadrature local oscillator network
US5412352A (en) * 1994-04-18 1995-05-02 Stanford Telecommunications, Inc. Modulator having direct digital synthesis for broadband RF transmission

Also Published As

Publication number Publication date
CN1149941A (en) 1997-05-14
SE9604433L (en) 1996-12-02
CA2191098C (en) 2000-05-02
SE9604433D0 (en) 1996-12-02
KR100210633B1 (en) 1999-07-15
CN1064794C (en) 2001-04-18
IL117369A0 (en) 1996-07-23
KR970703644A (en) 1997-07-03
AU5356696A (en) 1996-10-23
FR2732535A1 (en) 1996-10-04
DE19680328T1 (en) 1997-07-31
GB9624183D0 (en) 1997-01-08
FR2732535B1 (en) 2002-11-29
AU695320B2 (en) 1998-08-13
JPH10501674A (en) 1998-02-10
ITRM960188A0 (en) 1996-03-25
PL180753B1 (en) 2001-04-30
TW287335B (en) 1996-10-01
ITRM960188A1 (en) 1997-09-25
IT1284306B1 (en) 1998-05-18
SE519826C2 (en) 2003-04-15
WO1996031942A1 (en) 1996-10-10
BR9605951A (en) 1997-08-19
CA2191098A1 (en) 1996-10-10
FI964824A0 (en) 1996-12-02
PL317897A1 (en) 1997-04-28
MX9606016A (en) 1997-12-31
FI964824A (en) 1996-12-02

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)