CA2117336A1 - A method and means for transmultiplexing signals between signal terminals and radio frequency channels - Google Patents

A method and means for transmultiplexing signals between signal terminals and radio frequency channels

Info

Publication number
CA2117336A1
CA2117336A1 CA002117336A CA2117336A CA2117336A1 CA 2117336 A1 CA2117336 A1 CA 2117336A1 CA 002117336 A CA002117336 A CA 002117336A CA 2117336 A CA2117336 A CA 2117336A CA 2117336 A1 CA2117336 A1 CA 2117336A1
Authority
CA
Canada
Prior art keywords
channels
comb
signals
interpolating
fourier transform
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.)
Abandoned
Application number
CA002117336A
Other languages
English (en)
French (fr)
Inventor
Robert Mark Harrison
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
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
Application filed by Individual filed Critical Individual
Publication of CA2117336A1 publication Critical patent/CA2117336A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J4/00—Combined time-division and frequency-division multiplex systems
    • H04J4/005—Transmultiplexing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0211—Frequency selective networks using specific transformation algorithms, e.g. WALSH functions, Fermat transforms, Mersenne transforms, polynomial transforms, Hilbert transforms
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/0251—Comb filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Television Systems (AREA)
CA002117336A 1992-10-26 1993-10-12 A method and means for transmultiplexing signals between signal terminals and radio frequency channels Abandoned CA2117336A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/966,630 1992-10-26
US07/966,630 US5396489A (en) 1992-10-26 1992-10-26 Method and means for transmultiplexing signals between signal terminals and radio frequency channels

Publications (1)

Publication Number Publication Date
CA2117336A1 true CA2117336A1 (en) 1994-04-27

Family

ID=25511666

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002117336A Abandoned CA2117336A1 (en) 1992-10-26 1993-10-12 A method and means for transmultiplexing signals between signal terminals and radio frequency channels

Country Status (10)

Country Link
US (1) US5396489A (cg-RX-API-DMAC7.html)
EP (1) EP0623265A4 (cg-RX-API-DMAC7.html)
JP (1) JPH08502868A (cg-RX-API-DMAC7.html)
KR (1) KR970002238B1 (cg-RX-API-DMAC7.html)
CA (1) CA2117336A1 (cg-RX-API-DMAC7.html)
FI (1) FI943005A7 (cg-RX-API-DMAC7.html)
IL (1) IL107210A (cg-RX-API-DMAC7.html)
SE (1) SE9402220D0 (cg-RX-API-DMAC7.html)
TW (1) TW303557B (cg-RX-API-DMAC7.html)
WO (1) WO1994010772A1 (cg-RX-API-DMAC7.html)

Families Citing this family (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5606575A (en) * 1993-10-29 1997-02-25 Airnet Communications Corporation FFT-based channelizer and combiner employing residue-adder-implemented phase advance
US5535240A (en) * 1993-10-29 1996-07-09 Airnet Communications Corporation Transceiver apparatus employing wideband FFT channelizer and inverse FFT combiner for multichannel communication network
US5537435A (en) * 1994-04-08 1996-07-16 Carney; Ronald Transceiver apparatus employing wideband FFT channelizer with output sample timing adjustment and inverse FFT combiner for multichannel communication network
US5590156A (en) * 1994-04-22 1996-12-31 Carney; Ronald Multichannel wideband digital receiver making use of multiple wideband tuners having individually selectable gains to extend overall system dynamic range
AU702586B2 (en) * 1994-06-01 1999-02-25 Airnet Communications Corporation Wideband wireless basestation making use of time division multiple-access bus to effect switchable connections to modulator/demodulator resources
US5787344A (en) 1994-06-28 1998-07-28 Scheinert; Stefan Arrangements of base transceiver stations of an area-covering network
US5490172A (en) * 1994-07-05 1996-02-06 Airnet Communications Corporation Reducing peak-to-average variance of a composite transmitted signal via out-of-band artifact signaling
GB9414664D0 (en) * 1994-07-20 1994-09-07 British Aerospace Digital signal processing apparatus
US5838732A (en) * 1994-10-31 1998-11-17 Airnet Communications Corp. Reducing peak-to-average variance of a composite transmitted signal generated by a digital combiner via carrier phase offset
US5831879A (en) * 1994-12-22 1998-11-03 Harris Corporation Digital transmit filter
US5668836A (en) * 1994-12-29 1997-09-16 Motorola, Inc. Split frequency band signal digitizer and method
DE19581533C2 (de) * 1994-12-29 1999-02-25 Motorola Inc Verfahren zum Digitalisieren eines Breitbandfrequenzsignals und zugehöriger Breitbandfrequenzsignaldigitalisierer
US5854813A (en) * 1994-12-29 1998-12-29 Motorola, Inc. Multiple access up converter/modulator and method
US5602874A (en) * 1994-12-29 1997-02-11 Motorola, Inc. Method and apparatus for reducing quantization noise
US5579341A (en) * 1994-12-29 1996-11-26 Motorola, Inc. Multi-channel digital transceiver and method
US5754597A (en) * 1994-12-29 1998-05-19 Motorola, Inc. Method and apparatus for routing a digitized RF signal to a plurality of paths
US5748683A (en) * 1994-12-29 1998-05-05 Motorola, Inc. Multi-channel transceiver having an adaptive antenna array and method
US5610942A (en) * 1995-03-07 1997-03-11 Chen; Keping Digital signal transcoder and method of transcoding a digital signal
US5592480A (en) * 1995-03-13 1997-01-07 Carney; Ronald R. Wideband wireless basestation making use of time division multiple-access bus having selectable number of time slots and frame synchronization to support different modulation standards
JP2661587B2 (ja) * 1995-04-11 1997-10-08 日本電気株式会社 無線受信装置
DE19520353A1 (de) * 1995-06-07 1996-12-12 Thomson Brandt Gmbh Verfahren und Schaltungsanordnung zur Verbesserung des Empfangsverhaltens bei der Übertragung von digitalen Signalen
US5710763A (en) * 1995-07-31 1998-01-20 Motorola, Inc. Filtered fast Fourier transmultiplexer and method
US5859854A (en) * 1995-08-28 1999-01-12 Metawave Communications Corporation System and method for frequency multiplexing antenna signals
US5956674A (en) * 1995-12-01 1999-09-21 Digital Theater Systems, Inc. Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels
US5987037A (en) * 1996-02-26 1999-11-16 Lucent Technologies Inc. Multiple beam wireless telecommunication system
JP2738385B2 (ja) * 1996-04-15 1998-04-08 日本電気株式会社 可変帯域幅周波数分割多重通信方式
WO1998000953A1 (en) * 1996-06-28 1998-01-08 Philips Electronics N.V. Method for simplifying the demodulation in multiple carrier transmission system
US6363175B1 (en) 1997-04-02 2002-03-26 Sonyx, Inc. Spectral encoding of information
US5867479A (en) 1997-06-27 1999-02-02 Lockheed Martin Corporation Digital multi-channel demultiplexer/multiplex (MCD/M architecture)
US5999573A (en) * 1997-08-29 1999-12-07 Ericsson Inc. Wideband channelization with variable sampling frequency
US6005900A (en) * 1997-08-29 1999-12-21 Ericsson Inc. Wideband channelization using subsampled discrete fourier transforms
JP3608936B2 (ja) * 1998-03-20 2005-01-12 富士通株式会社 多重無線送信装置，多重無線受信装置，多重無線送受信装置及び多重無線送受信システム
US6088348A (en) * 1998-07-13 2000-07-11 Qualcom Incorporated Configurable single and dual VCOs for dual- and tri-band wireless communication systems
US6496546B1 (en) 1998-07-15 2002-12-17 Lucent Technologies Inc. Software-defined transceiver for a wireless telecommunications system
US6411653B1 (en) * 1999-07-16 2002-06-25 Lucent Technologies Inc. Cascaded polyphase DFT-filter band for a wireless telecommunications system
US6990060B2 (en) * 2000-02-11 2006-01-24 Bae Systems Polyphase-discrete fourier transform (DFT) sub-band definition filtering architecture
US6651078B1 (en) * 2000-02-23 2003-11-18 Legerity Inc Method for determining a decimation pattern in a network communications receiver
JP2002043965A (ja) * 2000-07-31 2002-02-08 Pioneer Electronic Corp 受信機
US6996188B2 (en) 2001-06-25 2006-02-07 Cyntrust Communications, Inc. Multiple sub-channel modulation and demodulation with arbitrarily defined channel spacing and sampling rates
GB2405061B (en) * 2001-12-05 2005-05-18 Matsushita Electric Industrial Co Ltd Multirate digital transceiver
US7433382B1 (en) * 2003-07-07 2008-10-07 Miao George J Spread spectrum based multichannel modulation for ultra wideband communications
JP4197293B2 (ja) * 2003-12-10 2008-12-17 パナソニック株式会社 Ａ／ｄ変換器、ｄ／ａ変換器
US7327802B2 (en) * 2004-03-19 2008-02-05 Sirit Technologies Inc. Method and apparatus for canceling the transmitted signal in a homodyne duplex transceiver
US8226003B2 (en) 2006-04-27 2012-07-24 Sirit Inc. Adjusting parameters associated with leakage signals
US8248212B2 (en) 2007-05-24 2012-08-21 Sirit Inc. Pipelining processes in a RF reader
US8427316B2 (en) 2008-03-20 2013-04-23 3M Innovative Properties Company Detecting tampered with radio frequency identification tags
US8446256B2 (en) * 2008-05-19 2013-05-21 Sirit Technologies Inc. Multiplexing radio frequency signals
US8169312B2 (en) * 2009-01-09 2012-05-01 Sirit Inc. Determining speeds of radio frequency tags
US20100289623A1 (en) * 2009-05-13 2010-11-18 Roesner Bruce B Interrogating radio frequency identification (rfid) tags
US8416079B2 (en) * 2009-06-02 2013-04-09 3M Innovative Properties Company Switching radio frequency identification (RFID) tags
US20110205025A1 (en) * 2010-02-23 2011-08-25 Sirit Technologies Inc. Converting between different radio frequencies
JP5557339B2 (ja) * 2011-03-02 2014-07-23 Ｎｅｃエンジニアリング株式会社 デシメーションフィルタ及びデシメーション処理方法
US8803730B2 (en) * 2011-07-21 2014-08-12 The Boeing Company Radar pulse detection using a digital radar receiver
US10062025B2 (en) 2012-03-09 2018-08-28 Neology, Inc. Switchable RFID tag
CN106911399B (zh) * 2015-12-22 2021-05-25 是德科技股份有限公司 宽带宽的多信道信号生成和分析的系统和装置及关联方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316282A (en) * 1979-11-23 1982-02-16 Rca Corporation Multichannel frequency translation of sampled waveforms by decimation and interpolation
US4881191A (en) * 1987-01-13 1989-11-14 Hewlett-Packard Company Multichannel decimation/interpolation filter
US4785447A (en) * 1987-02-17 1988-11-15 Nec Corporation FDM demultiplexer using oversampled digital filters

Also Published As

Publication number Publication date
EP0623265A4 (en) 1998-12-23
US5396489A (en) 1995-03-07
EP0623265A1 (en) 1994-11-09
SE9402220D0 (sv) 1994-06-23
WO1994010772A1 (en) 1994-05-11
FI943005L (fi) 1994-06-22
IL107210A (en) 1996-06-18
KR970002238B1 (ko) 1997-02-26
JPH08502868A (ja) 1996-03-26
IL107210A0 (en) 1994-01-25
FI943005A0 (fi) 1994-06-22
TW303557B (cg-RX-API-DMAC7.html) 1997-04-21
FI943005A7 (fi) 1994-06-22

Similar Documents

Publication Publication Date Title
US5396489A (en) Method and means for transmultiplexing signals between signal terminals and radio frequency channels
CA2004860C (en) Efficient digital frequency division multiplexed signal receiver
KR100203318B1 (ko) 광대역 주파수 신호 디지타이저 및 방법
CA2061685C (en) Apparatus for and method of digital signal processing
US5251218A (en) Efficient digital frequency division multiplexed signal receiver
CA2066540C (en) Multiple user digital receiving apparatus and method with time division multiplexing
KR0153223B1 (ko) 다중 채널 디지탈 송신기 및 수신기
CA2066851C (en) Multiple user digital receiver apparatus and method with combined multiple frequency channels
CA1255361A (en) Digital analysing and synthesizing filter bank with maximum sampling rate reduction
EP1114516B1 (en) Flexibility enhancement to the modified fast convolution algorithm
CA2334668C (en) A method and apparatus for digital channelisation and de-channelisation
RU2160507C2 (ru) Система радиосвязи между одним и несколькими пунктами
US5293382A (en) Method for FDMA signal multiplexing and demultiplexing
KR20010080180A (ko) 홀수 변환 고속 컨벌루션
RU2292658C2 (ru) Цифровой многочастотный приемопередатчик
RU98119313A (ru) Система радиосвязи между одним и несколькими пунктами
GB2304504A (en) OFDM receiver includes digital filter
US5461612A (en) Drop-and-add multiplexer for converting and processing a frequency multiplex signal
Kim et al. SDR-based digital channelizer/de-channelizer for multiple CDMA signals
US7602856B2 (en) Mixer for mixing a signal and method for mixing a signal
US20060159202A1 (en) Frequency converter for a spectral conversion of a start signal and method for a spectral conversion of a start signal
JPH11136204A (ja) 復調器

Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued