WO2009028806A3 - Method for applying amplitude use to digital amplyfier with variable bit resolution or clock frequency and apparatus for excuting the method - Google Patents

Method for applying amplitude use to digital amplyfier with variable bit resolution or clock frequency and apparatus for excuting the method Download PDF

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Publication number
WO2009028806A3
WO2009028806A3 PCT/KR2008/004480 KR2008004480W WO2009028806A3 WO 2009028806 A3 WO2009028806 A3 WO 2009028806A3 KR 2008004480 W KR2008004480 W KR 2008004480W WO 2009028806 A3 WO2009028806 A3 WO 2009028806A3
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WO
WIPO (PCT)
Prior art keywords
bit resolution
clock frequency
receiver
digital
processor
Prior art date
Application number
PCT/KR2008/004480
Other languages
French (fr)
Other versions
WO2009028806A2 (en
Inventor
Kyeongpyo Kim
Woo Yong Lee
Jin Kyeong Kim
Yong Sun Kim
Hyoung Jin Kwon
Original Assignee
Korea Electronics Telecomm
Kyeongpyo Kim
Woo Yong Lee
Jin Kyeong Kim
Yong Sun Kim
Hyoung Jin Kwon
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
Priority claimed from KR1020080040105A external-priority patent/KR100972297B1/en
Application filed by Korea Electronics Telecomm, Kyeongpyo Kim, Woo Yong Lee, Jin Kyeong Kim, Yong Sun Kim, Hyoung Jin Kwon filed Critical Korea Electronics Telecomm
Priority to US12/675,452 priority Critical patent/US8295780B2/en
Publication of WO2009028806A2 publication Critical patent/WO2009028806A2/en
Publication of WO2009028806A3 publication Critical patent/WO2009028806A3/en

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Classifications

    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes

Abstract

Disclosed is an adaptive modulation scheme and apparatus thereof using an Analog/Digital (AJO) converter with variable bit resolution or clock frequency, the A/D converter including a transmitter including a modulator to modulate data to be transmitted according to a modulation scheme received from a receiver, an A/D converter to convert the modulated data into an analog signal using a bit resolution or a clock frequency received from the receiver, and a radio frequency (RF) processor to transmit the analog signal to the receiver through a wireless channel and a receiver including an RF processor to receive data through a wireless channel, a calculator to calculate a Signal to Noise Ratio (SNR) of the data received through the RF processor, and a modulation controller to search a predetermined setting table for a corresponding modulation scheme and bit resolution using the calculated SNR and to transmit to a transmitter.
PCT/KR2008/004480 2007-08-28 2008-08-01 Method for applying amplitude use to digital amplyfier with variable bit resolution or clock frequency and apparatus for excuting the method WO2009028806A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/675,452 US8295780B2 (en) 2007-08-28 2008-08-01 Method for applying amplitude use to digital amplyfier with variable bit resolution or clock frequency and apparatus for excuting the method

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20070086772 2007-08-28
KR10-2007-0086772 2007-08-28
KR10-2008-0040105 2008-04-29
KR1020080040105A KR100972297B1 (en) 2007-08-28 2008-04-29 Method for applying amplitude use to digital amplyfier with variable bit resolution or clock frequency and apparatus for excuting the method

Publications (2)

Publication Number Publication Date
WO2009028806A2 WO2009028806A2 (en) 2009-03-05
WO2009028806A3 true WO2009028806A3 (en) 2009-04-23

Family

ID=40387989

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/004480 WO2009028806A2 (en) 2007-08-28 2008-08-01 Method for applying amplitude use to digital amplyfier with variable bit resolution or clock frequency and apparatus for excuting the method

Country Status (1)

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WO (1) WO2009028806A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11387933B2 (en) * 2020-01-31 2022-07-12 Qualcomm Incorporated Dynamic transmission front end and digital-to-analog converter in modem

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020118845A1 (en) * 2000-12-22 2002-08-29 Fredrik Henn Enhancing source coding systems by adaptive transposition
US6804211B1 (en) * 1999-08-03 2004-10-12 Wi-Lan Inc. Frame structure for an adaptive modulation wireless communication system
US20050135507A1 (en) * 2003-12-19 2005-06-23 Dae-Ig Chang Apparatus and method for demodulation using detection of channel adaptive modulation scheme

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6804211B1 (en) * 1999-08-03 2004-10-12 Wi-Lan Inc. Frame structure for an adaptive modulation wireless communication system
US20020118845A1 (en) * 2000-12-22 2002-08-29 Fredrik Henn Enhancing source coding systems by adaptive transposition
US20050135507A1 (en) * 2003-12-19 2005-06-23 Dae-Ig Chang Apparatus and method for demodulation using detection of channel adaptive modulation scheme

Also Published As

Publication number Publication date
WO2009028806A2 (en) 2009-03-05

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