TW303557B - - Google Patents

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Publication number
TW303557B
TW303557B TW082108252A TW82108252A TW303557B TW 303557 B TW303557 B TW 303557B TW 082108252 A TW082108252 A TW 082108252A TW 82108252 A TW82108252 A TW 82108252A TW 303557 B TW303557 B TW 303557B
Authority
TW
Taiwan
Prior art keywords
filter
channels
comb
library
fourier transform
Prior art date
Application number
TW082108252A
Other languages
English (en)
Chinese (zh)
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
Application granted granted Critical
Publication of TW303557B publication Critical patent/TW303557B/zh

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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)
  • Time-Division Multiplex Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Television Systems (AREA)
TW082108252A 1992-10-26 1993-10-06 TW303557B (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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
TW303557B true TW303557B (enExample) 1997-04-21

Family

ID=25511666

Family Applications (1)

Application Number Title Priority Date Filing Date
TW082108252A TW303557B (enExample) 1992-10-26 1993-10-06

Country Status (10)

Country Link
US (1) US5396489A (enExample)
EP (1) EP0623265A4 (enExample)
JP (1) JPH08502868A (enExample)
KR (1) KR970002238B1 (enExample)
CA (1) CA2117336A1 (enExample)
FI (1) FI943005L (enExample)
IL (1) IL107210A (enExample)
SE (1) SE9402220D0 (enExample)
TW (1) TW303557B (enExample)
WO (1) WO1994010772A1 (enExample)

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* Cited by examiner, † Cited by third party
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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
US5606575A (en) * 1993-10-29 1997-02-25 Airnet Communications Corporation FFT-based channelizer and combiner employing residue-adder-implemented phase advance
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
CA2191721C (en) * 1994-06-01 2003-05-20 Ronald R. Carney 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
US5754597A (en) * 1994-12-29 1998-05-19 Motorola, Inc. Method and apparatus for routing a digitized RF signal to a plurality of paths
US5602874A (en) * 1994-12-29 1997-02-11 Motorola, Inc. Method and apparatus for reducing quantization noise
US5748683A (en) * 1994-12-29 1998-05-05 Motorola, Inc. Multi-channel transceiver having an adaptive antenna array and method
US5668836A (en) * 1994-12-29 1997-09-16 Motorola, Inc. Split frequency band signal digitizer and method
US5854813A (en) * 1994-12-29 1998-12-29 Motorola, Inc. Multiple access up converter/modulator and method
US5579341A (en) * 1994-12-29 1996-11-26 Motorola, Inc. Multi-channel digital transceiver and method
JP3530193B2 (ja) * 1994-12-29 2004-05-24 モトローラ・インコーポレイテッド 広帯域周波数信号デジタイザおよびその方法
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
DE69731358T2 (de) * 1996-06-28 2005-11-03 Philips Intellectual Property & Standards Gmbh Verfahren zur vereinfachung der demodulation in einem mehrfachträger-übertragungssystem
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)
US6005900A (en) * 1997-08-29 1999-12-21 Ericsson Inc. Wideband channelization using subsampled discrete fourier transforms
US5999573A (en) * 1997-08-29 1999-12-07 Ericsson Inc. Wideband channelization with variable sampling frequency
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

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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
FI943005A0 (fi) 1994-06-22
IL107210A (en) 1996-06-18
IL107210A0 (en) 1994-01-25
WO1994010772A1 (en) 1994-05-11
SE9402220D0 (sv) 1994-06-23
EP0623265A1 (en) 1994-11-09
EP0623265A4 (en) 1998-12-23
JPH08502868A (ja) 1996-03-26
FI943005A7 (fi) 1994-06-22
CA2117336A1 (en) 1994-04-27
FI943005L (fi) 1994-06-22
US5396489A (en) 1995-03-07
KR970002238B1 (ko) 1997-02-26

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