Invention Application
WO2002073917A1 METHOD AND APPARATUS FOR PERFORMING CHANNEL ESTIMATION WITH A LIMITED RECEIVER
审中-公开
用有限接收器执行信道估计的方法和装置
- Patent Title: METHOD AND APPARATUS FOR PERFORMING CHANNEL ESTIMATION WITH A LIMITED RECEIVER
- Patent Title (中): 用有限接收器执行信道估计的方法和装置
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Application No.: PCT/EP2002/000602Application Date: 2002-01-22
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Publication No.: WO2002073917A1Publication Date: 2002-09-19
- Inventor: WILHELMSSON, Leif , WALLÉN, Anders , KOKKE, Robert
- Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (publ) , WILHELMSSON, Leif , WALLÉN, Anders , KOKKE, Robert
- Applicant Address: S-126 25 Stockholm SE
- Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (publ),WILHELMSSON, Leif,WALLÉN, Anders,KOKKE, Robert
- Current Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (publ),WILHELMSSON, Leif,WALLÉN, Anders,KOKKE, Robert
- Current Assignee Address: S-126 25 Stockholm SE
- Agency: ERICSSON MOBILE PLATFORMS AB
- Priority: US60/263,505 20010124; USnone 20011115
- Main IPC: H04L27/06
- IPC: H04L27/06
Abstract:
Performing channel estimation with a limited receiver includes performing a first estimation of a first portion of a signal to obtain first parameters of the portion of the signal. The first portion of the signal has predetermined offsets added during transmission. The predetermined offsets are based on the modulation format of a second portion. The first and second portions have different modulation formats. The first portion of the signal is demodulated using the first parameters to recover data symbols. An equalizer is tranined using a decision directed technique to obtain equalizer coefficients. The demodulated first portion of the signal is checked to confirm correct demodulation. The second protion of the signal is then demodulated using the equalizer coefficents.
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