Invention Grant
US07672383B2 Noise variance estimation in wireless communications for diversity combining and log-likelihood scaling
失效
无线通信中的噪声方差估计用于分集组合和对数似然度比例
- Patent Title: Noise variance estimation in wireless communications for diversity combining and log-likelihood scaling
- Patent Title (中): 无线通信中的噪声方差估计用于分集组合和对数似然度比例
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Application No.: US11047347Application Date: 2005-01-28
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Publication No.: US07672383B2Publication Date: 2010-03-02
- Inventor: June Namgoong , Hao Xu , Peter J. Black , Srikant Jayaraman
- Applicant: June Namgoong , Hao Xu , Peter J. Black , Srikant Jayaraman
- Applicant Address: US CA San Diego
- Assignee: Qualcomm Incorporated
- Current Assignee: Qualcomm Incorporated
- Current Assignee Address: US CA San Diego
- Agent Larry J Moskowitz
- Main IPC: H04L27/28
- IPC: H04L27/28
Abstract:
Noise variance estimation in wireless communications. Noise variance estimation includes receiving a signal including an OFDM symbol having, in-band tones including in-band pilot tones, and band-edge tones including band-edge pilot tones and guard tones, estimating an effective noise variance for the in-band tones using the in-band pilot tones and channel estimates for the in-band pilot tones, and estimating an effective noise variance for the band-edge tones using the band-edge pilot tones, channel estimates for the band-edge pilot tones, and the guard tones.
Public/Granted literature
- US20060062322A1 Noise variance estimation in wireless communications for diversity combining and log-likelihood scaling Public/Granted day:2006-03-23
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