CA2268857A1 - Method and apparatus for determining the rate of received data in a variable rate communication system - Google Patents

Method and apparatus for determining the rate of received data in a variable rate communication system

Info

Publication number
CA2268857A1
CA2268857A1 CA002268857A CA2268857A CA2268857A1 CA 2268857 A1 CA2268857 A1 CA 2268857A1 CA 002268857 A CA002268857 A CA 002268857A CA 2268857 A CA2268857 A CA 2268857A CA 2268857 A1 CA2268857 A1 CA 2268857A1
Authority
CA
Canada
Prior art keywords
ser
check
rate
values
rates
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002268857A
Other languages
French (fr)
Other versions
CA2268857C (en
Inventor
Tao Chen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Qualcomm Incorporated
Tao Chen
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 Qualcomm Incorporated, Tao Chen filed Critical Qualcomm Incorporated
Publication of CA2268857A1 publication Critical patent/CA2268857A1/en
Application granted granted Critical
Publication of CA2268857C publication Critical patent/CA2268857C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • H04L25/0262—Arrangements for detecting the data rate of an incoming signal
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0046—Code rate detection or code type detection

Abstract

Apparatus and method employed in a communications system which has a transmitter (2) and a receiver (4), where the receiver determines at which of several rates individual frames in a signal have been transmitted by the transmitter. For example, if the transmitter (2) employs four transmission rates, the receiver (2) decodes each frame of the received signal based on the four rates to produce four cyclic redundancy check (CRC) bits, four symbol error rate (SER) values and one or more Yamamoto check values. If only two of the CRC bits check, then the receiver (2) compares to each other the SER values for those two rates to determine at which of the two rates a current frame was transmitted. If only one of the CRC bits check for a given rate, then the SER value for that rate is compared with a maximum SER threshold for that rate. Additionally, SER values for the other rates can be compared to minimum SER thresholds. Furthermore, the Yamamoto check values can be analyzed to determine whether looser or tighter minimum and maximum SER thresholds should be employed if the Yamamoto values check for the current rate, or do not check, respectively.
CA002268857A 1996-10-18 1997-10-09 Method and apparatus for determining the rate of received data in a variable rate communication system Expired - Fee Related CA2268857C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/730,863 US5751725A (en) 1996-10-18 1996-10-18 Method and apparatus for determining the rate of received data in a variable rate communication system
US08/730,863 1996-10-18
PCT/US1997/018625 WO1998018242A1 (en) 1996-10-18 1997-10-09 Method and apparatus for determining the rate of received data in a variable rate communication system

Publications (2)

Publication Number Publication Date
CA2268857A1 true CA2268857A1 (en) 1998-04-30
CA2268857C CA2268857C (en) 2008-09-09

Family

ID=24937097

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002268857A Expired - Fee Related CA2268857C (en) 1996-10-18 1997-10-09 Method and apparatus for determining the rate of received data in a variable rate communication system

Country Status (16)

Country Link
US (1) US5751725A (en)
EP (2) EP0932963B1 (en)
JP (1) JP3889448B2 (en)
KR (1) KR100559099B1 (en)
CN (1) CN1124726C (en)
AT (2) ATE432577T1 (en)
AU (1) AU4822097A (en)
BR (1) BR9712354A (en)
CA (1) CA2268857C (en)
DE (2) DE69739430D1 (en)
ES (1) ES2260786T3 (en)
HK (2) HK1024362A1 (en)
IL (1) IL129305A0 (en)
RU (1) RU99109991A (en)
TW (1) TW363312B (en)
WO (1) WO1998018242A1 (en)

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Also Published As

Publication number Publication date
ATE432577T1 (en) 2009-06-15
AU4822097A (en) 1998-05-15
RU99109991A (en) 2003-03-10
EP1478144A1 (en) 2004-11-17
HK1024362A1 (en) 2000-10-05
CN1124726C (en) 2003-10-15
DE69735673T2 (en) 2007-03-29
DE69739430D1 (en) 2009-07-09
TW363312B (en) 1999-07-01
KR20000049248A (en) 2000-07-25
JP2001505377A (en) 2001-04-17
HK1072846A1 (en) 2005-09-09
CN1234160A (en) 1999-11-03
ES2260786T3 (en) 2006-11-01
KR100559099B1 (en) 2006-03-15
DE69735673D1 (en) 2006-05-24
ATE323365T1 (en) 2006-04-15
EP0932963B1 (en) 2006-04-12
BR9712354A (en) 1999-08-31
EP1478144B1 (en) 2009-05-27
CA2268857C (en) 2008-09-09
WO1998018242A1 (en) 1998-04-30
EP0932963A1 (en) 1999-08-04
US5751725A (en) 1998-05-12
JP3889448B2 (en) 2007-03-07
IL129305A0 (en) 2000-02-17

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