发明申请
- 专利标题: Method and arrangement for noise variance and sir estimation
- 专利标题(中): 噪声方差和噪声估计的方法和布置
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申请号: US10567317申请日: 2004-08-05
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公开(公告)号: US20070207741A1公开(公告)日: 2007-09-06
- 发明人: Alan Jones
- 申请人: Alan Jones
- 优先权: GB0318529.5 20030807
- 国际申请: PCT/GB04/03368 WO 20040805
- 主分类号: H04B1/00
- IPC分类号: H04B1/00 ; H04B17/00
摘要:
A method and arrangement for noise variance and SIR estimation in a UTRAN Node B or User Equipment estimates the SIR (SIR(1) . . . SIR(K)) at the output of a detector by using an estimate ({circumflex over (σ)}2) of the detector input noise variance to provide an estimate ({circumflex over (σ)}2) of the detector output noise variance. The detector input noise variance is derived from a midamble portion in the received signal. By deriving the transfer function of the detector an estimate of the detector output noise variance is estimated. The estimated output noise variance then allows an improved estimate of the SIR (SIR(1) . . . SIR(K)) at the detected output.