[go: up one dir, main page]

SE9803133D0 - Method and arrangement in a radio receiver - Google Patents

Method and arrangement in a radio receiver

Info

Publication number
SE9803133D0
SE9803133D0 SE9803133A SE9803133A SE9803133D0 SE 9803133 D0 SE9803133 D0 SE 9803133D0 SE 9803133 A SE9803133 A SE 9803133A SE 9803133 A SE9803133 A SE 9803133A SE 9803133 D0 SE9803133 D0 SE 9803133D0
Authority
SE
Sweden
Prior art keywords
measurement interval
analog
output signal
radio receiver
radio
Prior art date
Application number
SE9803133A
Other languages
Swedish (sv)
Other versions
SE9803133L (en
SE512965C2 (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 true SE9803133D0 (en) 1998-09-15
SE9803133L 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
DE69228816T2 (en) * 1992-10-28 1999-08-19 Alcatel DC offset correction for direct mix TDMA receivers
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
SE9803133L (en) 2000-03-16
SE512965C2 (en) 2000-06-12
CO5130056A1 (en) 2002-02-27
WO2000016490A8 (en) 2000-05-11
AU6376699A (en) 2000-04-03
WO2000016490A1 (en) 2000-03-23

Similar Documents

Publication Publication Date Title
US7961689B2 (en) Method and apparatus for determining an end of a subframe in a TDD system
EP0411756B1 (en) Radio telephone receiver with gain control
JP3064081B2 (en) AGC amplifier gain control method
DE69938194D1 (en) An improved receiver comprising a broadband digitizer
JPH0555976A (en) Receiver for mobile telephone system
DE69916499D1 (en) AUTOMECHANICAL GAIN CONTROL FOR TIME GRID OPERATION
EP1083680A1 (en) Array-antenna radio communication device
EP1058399A3 (en) Spread spectrum communication system
WO2000008869A3 (en) Channel communication apparatus and method in cdma communication system
FI952396A (en) Procedure to improve the accuracy of channel change and connection setup and cellular radio system
EP1247418B1 (en) Optimized sleep mode operation
NO990064D0 (en) Method and apparatus for compensating d.c. offsets in a sampled signal
WO2004023678A3 (en) Method of and system for calibrating a repeater
MY124366A (en) A method and an apparatus for estimating residual noise in a signal and an apparatus utilizing the method
EP0915629A3 (en) Communication terminal device, cellular radio communication system, and information communication method
FI101919B (en) Method for calculating impulse response and receiver
GB2350018B (en) A method of and apparatus for estimating a characteristic of a signal
EP0952750A3 (en) Channel search scheme for receivers in CDMA mobile communication systems
SE9903308D0 (en) Receiver having functions for canceling DC offset and measuring carrier detection threshold value, and control method thereof
AU7657798A (en) Directed retry for call setup
SE9803133D0 (en) Method and arrangement in a radio receiver
US20080056166A1 (en) Wireless Communication Equipment and Wireless Communication Method
WO1999020061A3 (en) Method and receiving device for estimating channels in communications systems
DE69926489D1 (en) DATA TRANSMISSION PROCEDURE AND SYSTEM
EP0673129A3 (en) Method and apparatus for determining the C/I ratio for co-channel or adjacent channel interferene in digital mobile radio networks

Legal Events

Date Code Title Description
NUG Patent has lapsed