WO2007014377B1 - Managing spectra of modulated signals in a communication network - Google Patents

Managing spectra of modulated signals in a communication network

Info

Publication number
WO2007014377B1
WO2007014377B1 PCT/US2006/029718 US2006029718W WO2007014377B1 WO 2007014377 B1 WO2007014377 B1 WO 2007014377B1 US 2006029718 W US2006029718 W US 2006029718W WO 2007014377 B1 WO2007014377 B1 WO 2007014377B1
Authority
WO
WIPO (PCT)
Prior art keywords
information
frequency components
original
modulating
modulated signal
Prior art date
Application number
PCT/US2006/029718
Other languages
French (fr)
Other versions
WO2007014377A3 (en
WO2007014377A2 (en
Inventor
Iii Lawrence W Yonge
Original Assignee
Intellon Corp
Iii Lawrence W Yonge
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 Intellon Corp, Iii Lawrence W Yonge filed Critical Intellon Corp
Priority to EP06788973A priority Critical patent/EP1915822B1/en
Priority to ES06788973T priority patent/ES2405731T3/en
Priority to CA2617148A priority patent/CA2617148C/en
Priority to JP2008524255A priority patent/JP5537028B2/en
Priority to AU2006272469A priority patent/AU2006272469B2/en
Publication of WO2007014377A2 publication Critical patent/WO2007014377A2/en
Publication of WO2007014377A3 publication Critical patent/WO2007014377A3/en
Publication of WO2007014377B1 publication Critical patent/WO2007014377B1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/42—Loop networks
    • H04L12/427—Loop networks with decentralised control
    • H04L12/43—Loop networks with decentralised control with synchronous transmission, e.g. time division multiplex [TDM], slotted rings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
    • H04L25/03834—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using pulse shaping
    • H04L25/03847—Shaping by selective switching of amplifying elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H04L27/2623—Reduction thereof by clipping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
    • H04L27/3411—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power reducing the peak to average power ratio or the mean power of the constellation; Arrangements for increasing the shape gain of a signal set
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/345—Modifications of the signal space to allow the transmission of additional information
    • H04L27/3461—Modifications of the signal space to allow the transmission of additional information in order to transmit a subchannel
    • H04L27/3472—Modifications of the signal space to allow the transmission of additional information in order to transmit a subchannel by switching between alternative constellations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0028—Variable division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0042—Arrangements for allocating sub-channels of the transmission path intra-user or intra-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided

Abstract

Information is modulated onto frequency components of a signal. The resulting modulated signal includes at least some redundancy in frequency enabling a portion of the information modulated onto selected frequency components to be recovered from fewer than all of the selected frequency components. Controlling the spectrum of the modulated signal includes enabling the amplitude of at least some frequency components of the modulated signal to be set below a predetermined amplitude used for modulating the information.

Claims

AMENDED CLAIMS received by the International Bureau on 21 November 2007 (21.11.07)
1. (Currently Amended) A method, comprising: modulating information onto frequency components of a signal, the resulting modulated signal including at least some redundancy in frequency enabling a portion of the information modulated onto selected frequency components to be recovered from fewer than all of the selected frequency components; SH4 controlling the spectrum of the modulated signal, including enabling the amplitude of at least some frequency components of the modulated signal to be set below a predetermined amplitude used for modulating the information;_and generating the modulated signal using a transform that includes the frequency components with amplitudes that have been set below the predetermined amplitude.
2. (Original) The method of claim 1, wherein modulating the portion of the information onto selected frequency components comprises modulating redundant data from which the portion of the information can be decoded onto respective frequency components having different center frequencies.
3. (Original) The method of claim 2, wherein the signal comprises a plurality of symbols, and at least some of the respective frequency components are in different symbols.
4. (Original) The method of claim 2, wherein the redundant data comprises one or more encoded bits associated with the information.
5. (Original) The method of claim 4, wherein the one or more encoded bits comprise data bits representing the information.
6. (Original) The method of claim 4, wherein the one or more encoded bits comprise parity bits used for decoding the information.
7. (Original) The method of claim 2, wherein the center frequencies are spread approximately uniformly over most of a set of frequency components available for modulating the information.
8. (Original) The method of claim 1, further comprising transmitting the modulated signal from a first node to a second node.
9. (Original) The method of claim 8, wherein the first node and the second node each stores information identifying a set of frequency components available for modulating the information.
10. (Original) The method of claim S, wherein the second node is able to recover the portion of the information without needing to receive information from the first station indicating whether any of the selected frequency components have been set below the predetermined amplitude used for modulating the information.
11. (Original) The method of claim 1 , further comprising demodulating each of the selected frequency components, and using resulting demodulated information to recover the portion of the information.
12. (Original) The method of claim 11 , wherein recovering the portion of the information comprises decoding the demodulated information,
13. (Canceled)
14. (Original) The method of claim I5 wherein the predetermined amplitude used for modulating the information comprises an amplitude corresponding to a phase shift keying modulation constellation.
15. (Original) The method of claim 1 , wherein the predetermined amplitude used for modulating the information comprises one of a plurality of amplitudes corresponding to a quadrature amplitude modulation constellation.
16. (Original) The method of claim 1 , wherein setting the amplitude of one of the frequency components below the predetermined amplitude used for modulating the information comprises setting the amplitude of the frequency component below a limit based on a constraint on power that can be radiated in a portion of the spectrum of the modulated signal in which the frequency component is located.
18
17. (Original) The method of claim 16, wherein the constraint on the power is based on a prohibition from interfering with a licensed entity.
18. (Original) The method of claim 17, further comprising setting the amplitude of the frequency component below the limit in response to detecting a transmission from the licensed entity.
19. (Original) The method of claim 1 „ wherein setting the amplitude of one of the frequency components below the predetermined amplitude used for modulating the information comprises turning off the frequency component.
20. (Original) The method of claim 1, further comprising selecting the frequency components of the signal according to a set of available frequencies that excludes at least some frequencies in a range of frequencies.
21. (Original) The method of claim 20, wherein the excluded frequencies correspond to frequencies that are likely to interfere with licensed entities in a region.
22. (Currently Amended) A transmitter, comprising: an encoder module including circuitry to redundantly encode information to be modulated onto frequency components of a signal, the resulting modulated signal including at least some redundancy in frequency enabling a portion of the information modulated onto selected frequency components to be recovered from fewer than all of the selected frequency components; βRd- a spectral shaping module including circuitry to control the spectrum of the modulated signal, including enabling the amplitude of at least some frequency components of the modulated signal to be set below a predetermined amplitude used for modulating the information; and a transform module including circuitry to generate the modulated signal using; frequency components that include the frequency components with amplitudes that have been set below the predetermined amplitude..
19
PCT/US2006/029718 2005-07-27 2006-07-27 Managing spectra of modulated signals in a communication network WO2007014377A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP06788973A EP1915822B1 (en) 2005-07-27 2006-07-27 Managing spectra of modulated signals in a communication network
ES06788973T ES2405731T3 (en) 2005-07-27 2006-07-27 Management of spectra of modulated signals in a communication network
CA2617148A CA2617148C (en) 2005-07-27 2006-07-27 Managing spectra of modulated signals in a communication network
JP2008524255A JP5537028B2 (en) 2005-07-27 2006-07-27 Managing the spectrum of modulated signals in communication networks
AU2006272469A AU2006272469B2 (en) 2005-07-27 2006-07-27 Managing spectra of modulated signals in a communication network

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US70271705P 2005-07-27 2005-07-27
US60/702,717 2005-07-27
US70572005P 2005-08-02 2005-08-02
US60/705,720 2005-08-02
US11/493,382 2006-07-26
US11/493,382 US8175190B2 (en) 2005-07-27 2006-07-26 Managing spectra of modulated signals in a communication network

Publications (3)

Publication Number Publication Date
WO2007014377A2 WO2007014377A2 (en) 2007-02-01
WO2007014377A3 WO2007014377A3 (en) 2007-12-06
WO2007014377B1 true WO2007014377B1 (en) 2008-01-24

Family

ID=37684031

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/029718 WO2007014377A2 (en) 2005-07-27 2006-07-27 Managing spectra of modulated signals in a communication network

Country Status (7)

Country Link
US (2) US8175190B2 (en)
EP (2) EP1915822B1 (en)
JP (2) JP5537028B2 (en)
AU (1) AU2006272469B2 (en)
CA (1) CA2617148C (en)
ES (2) ES2629994T3 (en)
WO (1) WO2007014377A2 (en)

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