发明申请
- 专利标题： Methods and apparatus for noise estimation in a communication system
- 专利标题（中）： 通信系统中噪声估计的方法和装置
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申请号： US11516910申请日： 2006-09-06
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公开(公告)号： US20070153924A1公开(公告)日： 2007-07-05
- 发明人: Fuyun Ling , Krishna Kiran Mukkavilli , Gordon Kent Walker
- 申请人： Fuyun Ling , Krishna Kiran Mukkavilli , Gordon Kent Walker
- 主分类号： H04K1/10
- IPC分类号： H04K1/10
摘要：
Methods and apparatus for noise estimation in a communication system. In an aspect, a method for noise and interference estimation is provided. The method includes identifying one or more unmodulated subcarriers in a received waveform, processing the one or more unmodulated subcarriers to produce a demodulated output, and determining a noise variance based on the demodulated output. In another aspect, an apparatus for providing a noise and interference estimation is provided. The apparatus includes selection logic configured to identify one or more unmodulated subcarriers in a received waveform, a processor configured to demodulate the one or more unmodulated subcarriers to produce a demodulated output, and variance determination logic configured to determine a noise variance based on the demodulated output.