WO2010138356A3 - Spread spectrum with doppler optimization - Google Patents

Spread spectrum with doppler optimization Download PDF

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Publication number
WO2010138356A3
WO2010138356A3 PCT/US2010/035419 US2010035419W WO2010138356A3 WO 2010138356 A3 WO2010138356 A3 WO 2010138356A3 US 2010035419 W US2010035419 W US 2010035419W WO 2010138356 A3 WO2010138356 A3 WO 2010138356A3
Authority
WO
WIPO (PCT)
Prior art keywords
coherent
signal
smaller
doppler
optimization
Prior art date
Application number
PCT/US2010/035419
Other languages
French (fr)
Other versions
WO2010138356A2 (en
Inventor
Theodore J. Myers
Daniel Thomas Werner
Original Assignee
On-Ramp Wireless, 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 On-Ramp Wireless, Inc. filed Critical On-Ramp Wireless, Inc.
Publication of WO2010138356A2 publication Critical patent/WO2010138356A2/en
Publication of WO2010138356A3 publication Critical patent/WO2010138356A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0035—Synchronisation arrangements detecting errors in frequency or phase
    • 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
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7085—Synchronisation aspects using a code tracking loop, e.g. a delay-locked loop

Abstract

A method of compensating for doppler phase errors includes receiving a signal at a receiver wherein the signal is spread using a pseudo-noise code, dividing the signal into a plurality of smaller coherent units and then compensating for induced doppler phase errors by analyzing the plurality of smaller coherent units. Analysis may include producing a plurality of coherent sums by summing across the smaller coherent units and then summing non-coherently the plurality of coherent sums. Analysis may also include demodulating a symbol from the smaller coherent units. A modulation technique may be selected from a plurality of modulation techniques and then be used to encode and transmit a symbol stream.
PCT/US2010/035419 2009-05-27 2010-05-19 Spread spectrum with doppler optimization WO2010138356A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/472,642 2009-05-27
US12/472,642 US7733945B2 (en) 2008-03-18 2009-05-27 Spread spectrum with doppler optimization

Publications (2)

Publication Number Publication Date
WO2010138356A2 WO2010138356A2 (en) 2010-12-02
WO2010138356A3 true WO2010138356A3 (en) 2011-02-24

Family

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Family Applications (1)

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PCT/US2010/035419 WO2010138356A2 (en) 2009-05-27 2010-05-19 Spread spectrum with doppler optimization

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US (1) US7733945B2 (en)
TW (1) TW201132005A (en)
WO (1) WO2010138356A2 (en)

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Also Published As

Publication number Publication date
US20090238248A1 (en) 2009-09-24
TW201132005A (en) 2011-09-16
WO2010138356A2 (en) 2010-12-02
US7733945B2 (en) 2010-06-08

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