SE9803133L - Method and device for reducing DC level errors in a TDMA system - Google Patents

Method and device for reducing DC level errors in a TDMA system

Info

Publication number
SE9803133L
SE9803133L SE9803133A SE9803133A SE9803133L SE 9803133 L SE9803133 L SE 9803133L SE 9803133 A SE9803133 A SE 9803133A SE 9803133 A SE9803133 A SE 9803133A SE 9803133 L SE9803133 L SE 9803133L
Authority
SE
Sweden
Prior art keywords
measurement interval
analog
output signal
radio
analog output
Prior art date
Application number
SE9803133A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE512965C2 (en
SE9803133D0 (en
Inventor
Dan Korsfeldt
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE9803133A priority Critical patent/SE512965C2/en
Publication of SE9803133D0 publication Critical patent/SE9803133D0/en
Priority to PCT/SE1999/001535 priority patent/WO2000016490A1/en
Priority to AU63766/99A priority patent/AU6376699A/en
Priority to CO99055996A priority patent/CO5130056A1/en
Publication of SE9803133L publication Critical patent/SE9803133L/en
Publication of SE512965C2 publication Critical patent/SE512965C2/en

Links

Classifications

    • 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
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

The invention relates to a method and an arrangement for estimating a DC-offset in at least one analog output signal from an analog front end of a radio receiver in a TDMA-based radio communication system. A sequence of measurement intervals is defined (501) such that for each burst transmitted on a radio carrier frequency by mobile stations operating in a common cell, there is at least one measurement interval during which no overlap with a second burst occurs. The analog front end of the radio receiver generates (502) the analog output signal by performing analog signal processing of received radio signals. Digital samples are derived (503) from the analog output signal. A measure of received signal power in each measurement interval in a framing period is estimated (504). At least one measurement interval during the framing period is selected (505) in dependence of said measure. The DC-offset is estimated (506) using samples belonging to said selected measurement interval.
SE9803133A 1998-09-15 1998-09-15 Method and device for reducing DC level errors in a TDMA system SE512965C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9803133A SE512965C2 (en) 1998-09-15 1998-09-15 Method and device for reducing DC level errors in a TDMA system
PCT/SE1999/001535 WO2000016490A1 (en) 1998-09-15 1999-09-03 Method and arrangement in a radio receiver
AU63766/99A AU6376699A (en) 1998-09-15 1999-09-03 Method and arrangement in a radio receiver
CO99055996A CO5130056A1 (en) 1998-09-15 1999-09-06 METHOD AND SYSTEM IN A RADIO RECEIVER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9803133A SE512965C2 (en) 1998-09-15 1998-09-15 Method and device for reducing DC level errors in a TDMA system

Publications (3)

Publication Number Publication Date
SE9803133D0 SE9803133D0 (en) 1998-09-15
SE9803133L true SE9803133L (en) 2000-03-16
SE512965C2 SE512965C2 (en) 2000-06-12

Family

ID=20412606

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9803133A SE512965C2 (en) 1998-09-15 1998-09-15 Method and device for reducing DC level errors in a TDMA system

Country Status (4)

Country Link
AU (1) AU6376699A (en)
CO (1) CO5130056A1 (en)
SE (1) SE512965C2 (en)
WO (1) WO2000016490A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2821218B1 (en) 2001-02-22 2006-06-23 Cit Alcatel RECEPTION DEVICE FOR A MOBILE RADIOCOMMUNICATION TERMINAL

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594894B1 (en) * 1992-10-28 1999-03-31 Alcatel DC offset correction for direct-conversion TDMA receiver
US5724653A (en) * 1994-12-20 1998-03-03 Lucent Technologies Inc. Radio receiver with DC offset correction circuit
US5838735A (en) * 1996-07-08 1998-11-17 Telefonaktiebolaget Lm Ericsson Method and apparatus for compensating for a varying d.c. offset in a sampled signal

Also Published As

Publication number Publication date
CO5130056A1 (en) 2002-02-27
WO2000016490A8 (en) 2000-05-11
SE512965C2 (en) 2000-06-12
SE9803133D0 (en) 1998-09-15
WO2000016490A1 (en) 2000-03-23
AU6376699A (en) 2000-04-03

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Legal Events

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