CA2108494A1 - A frequency hopping code division multiple access radio communication unit - Google Patents

A frequency hopping code division multiple access radio communication unit

Info

Publication number
CA2108494A1
CA2108494A1 CA2108494A CA2108494A CA2108494A1 CA 2108494 A1 CA2108494 A1 CA 2108494A1 CA 2108494 A CA2108494 A CA 2108494A CA 2108494 A CA2108494 A CA 2108494A CA 2108494 A1 CA2108494 A1 CA 2108494A1
Authority
CA
Canada
Prior art keywords
communication unit
radio communication
hard
data samples
information signal
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
CA2108494A
Other languages
French (fr)
Other versions
CA2108494C (en
Inventor
Gregory Mark Chiasson
Phillip David Rasky
Kevin Lynn Baum
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 CA2108494A1 publication Critical patent/CA2108494A1/en
Application granted granted Critical
Publication of CA2108494C publication Critical patent/CA2108494C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/715—Interference-related aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • H04B7/2634—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] for channel frequency control
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/7136—Arrangements for generation of hop frequencies, e.g. using a bank of frequency sources, using continuous tuning or using a transform
    • H04B2001/71365—Arrangements for generation of hop frequencies, e.g. using a bank of frequency sources, using continuous tuning or using a transform using continuous tuning of a single frequency source
    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/715—Interference-related aspects
    • H04B2001/7152—Interference-related aspects with means for suppressing interference

Abstract

A radio communication unit for a digital communication system is provided in which an input information signal is protected from transmission errors by forward error correction encoding the information signal. In addition, the communication unit enhances subsequent processing of a transmitted form of the information signal by a hard-limiting receiver by inserting a predetermined synchronization sequence into the information signal. Further, a corresponding radio communication unit is provided which includes a hard limiting mechanism for removing the magnitude of each sample in a group of data samples of a signal received from over a radio communication channel. In addition, weighting coefficients of the hard-limited group of data samples for maximum likelihood decoding and diversity combining are generated by comparing the hard-limited group of data samples to a known predetermined synchronization sequence. Finally, estimated information samples are generated, utilizing the weighting coefficients, by maximum-likelihood decoding the group of data samples.
CA002108494A 1992-11-09 1993-10-15 A frequency hopping code division multiple access radio communication unit Expired - Fee Related CA2108494C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US973,352 1992-11-09
US07/973,352 US5546429A (en) 1992-11-09 1992-11-09 Frequency hopping code division multiple access radio communication unit

Publications (2)

Publication Number Publication Date
CA2108494A1 true CA2108494A1 (en) 1994-05-10
CA2108494C CA2108494C (en) 1998-11-24

Family

ID=25520801

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002108494A Expired - Fee Related CA2108494C (en) 1992-11-09 1993-10-15 A frequency hopping code division multiple access radio communication unit

Country Status (2)

Country Link
US (1) US5546429A (en)
CA (1) CA2108494C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111141318A (en) * 2020-01-17 2020-05-12 安捷光通科技成都有限公司 Brillouin optical time domain clash type distributed optical fiber sensor

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3444444B2 (en) * 1994-09-30 2003-09-08 ソニー株式会社 Communication terminal device
US5966401A (en) * 1995-12-27 1999-10-12 Kumar; Derek D. RF simplex spread spectrum receiver and method with symbol deinterleaving prior to bit estimating
KR970060721A (en) * 1996-01-29 1997-08-12 이데이 노부유끼 Transmission device, reception device, transmission method and reception method for interleaving and changing directional pattern
US6169789B1 (en) 1996-12-16 2001-01-02 Sanjay K. Rao Intelligent keyboard system
JPH10322408A (en) * 1997-03-19 1998-12-04 Sony Corp Receiver and signal reception method
KR100264862B1 (en) 1997-07-31 2000-09-01 윤종용 Orthogonal code hopping multiple access communication system
DE19736676C1 (en) * 1997-08-22 1998-12-10 Siemens Ag Data packet transmission method in digital transmission system
US5946346A (en) * 1997-10-07 1999-08-31 Motorola, Inc. Method and system for generating a power control command in a wireless communication system
GB2337673A (en) * 1998-05-22 1999-11-24 Siemens Ag Detecting data from received radio signals
US6574293B1 (en) * 1998-10-28 2003-06-03 Ericsson Inc. Receivers and methods for reducing interference in radio communications
US6269132B1 (en) 1999-04-26 2001-07-31 Intellon Corporation Windowing function for maintaining orthogonality of channels in the reception of OFDM symbols
US6074086A (en) * 1999-04-26 2000-06-13 Intellon Corporation Synchronization of OFDM signals with improved windowing
JP2002043990A (en) * 2000-07-21 2002-02-08 Mitsubishi Electric Corp Receiving device for wireless communication
US6834043B1 (en) * 2000-07-24 2004-12-21 Motorola, Inc. Method and device for exploiting transmit diversity in time varying wireless communication systems
US7145934B2 (en) * 2001-03-03 2006-12-05 Oxford Semiconductor Inc Multichannel signal transmission and reception for bluetooth systems
US7010269B2 (en) * 2001-05-07 2006-03-07 Koninklijke Philips Electronics N.V. Pre-equalizer structure based on PN511 sequence for terrestrial DTV reception
CA2472319C (en) * 2002-03-04 2012-09-25 Glowlink Communications Technology Detecting and measuring interference contained within a digital carrier
CN1555613A (en) * 2002-05-30 2004-12-15 连宇通信有限公司 Receiving method based on MIMO CDMA
US20070234178A1 (en) * 2003-02-26 2007-10-04 Qualcomm Incorporated Soft information scaling for interactive decoding
US7027496B2 (en) * 2003-04-04 2006-04-11 Nokia Corporation Method and apparatus providing unbiased signal-to-noise ratio estimation and its application to discontinuous transmission detection
US11728843B2 (en) * 2021-10-19 2023-08-15 L3Harris Technologies, Inc. Frequency hopping interference detection using decoder codeword metrics

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3803361A (en) * 1972-01-11 1974-04-09 J Nugent Telemetering system
GB1578469A (en) * 1977-11-05 1980-11-05 Marconi Co Ltd Tropospheric scatter radio communications systems
US4748682A (en) * 1985-01-08 1988-05-31 Mitsubishi Denki Kabushiki Kaisha Combined diversity receiving apparatus
US4910752A (en) * 1987-06-15 1990-03-20 Motorola, Inc. Low power digital receiver
DE69024525T2 (en) * 1989-05-02 1996-05-15 Nec Corp TDMA space diversity receiver
US5121408A (en) * 1989-10-16 1992-06-09 Hughes Aircraft Company Synchronization for entry to a network in a frequency hopping communication system
US5031193A (en) * 1989-11-13 1991-07-09 Motorola, Inc. Method and apparatus for diversity reception of time-dispersed signals
US5063574A (en) * 1990-03-06 1991-11-05 Moose Paul H Multi-frequency differentially encoded digital communication for high data rate transmission through unequalized channels
US5175749A (en) * 1991-01-25 1992-12-29 Motorola, Inc. Apparatus and method for dc offset correction in a receiver
US5142551A (en) * 1991-02-28 1992-08-25 Motorola, Inc. Signal weighting system for digital receiver
US5373536A (en) * 1991-05-06 1994-12-13 Motorola, Inc. Method of synchronizing to a signal
US5214675A (en) * 1991-07-02 1993-05-25 Motorola, Inc. System and method for calculating channel gain and noise variance of a communication channel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111141318A (en) * 2020-01-17 2020-05-12 安捷光通科技成都有限公司 Brillouin optical time domain clash type distributed optical fiber sensor

Also Published As

Publication number Publication date
CA2108494C (en) 1998-11-24
US5546429A (en) 1996-08-13

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Legal Events

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EEER Examination request
MKLA Lapsed
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Effective date: 20081015