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公开(公告)号:US09203666B2
公开(公告)日:2015-12-01
申请号:US14390507
申请日:2013-04-10
Applicant: ST-Ericsson SA
Inventor: Fabrice Belveze , Robin Gerzaguet
IPC: H04L27/152 , H04B1/12 , H03D3/00 , H04L27/38
CPC classification number: H04L27/1525 , H03D3/009 , H04B1/123 , H04L27/3863
Abstract: A receiver (100) has an ln-phase path (l-path) (101) that delivers a digital l-path signal x1(t) and a Quadrature path (Q-path) (103) that delivers a digital Q-path signal xQ(t). The receiver (100) includes a compensation stage (124) arranged to compensate for gain error g and phase error φ between the digital l-path signal x1(t) and the digital Q-path signal xQ(t). The compensation stage (124) has a compensation coefficient generation stage (200), a compensation coefficient application stage (202), a gain control stage (208), a relative gradient generation stage (214) and a step parameter generation stage (224). Compensation coefficients W1,1, W1,2, W2,1, W2,2 applied to the digital l-path signal x1(t) and the digital Q-path signal xQ(t) are generated by iteratively updating them using a relative gradient of the compensated digital in-phase signal y1(t) and a compensated digital quadrature signal yQ(t), and a step parameter μn, the magnitude of which is adjusted based on a rate of change of the compensation coefficients W1,1, W1,2, W2,1, W2,2.
Abstract translation: 接收器(100)具有传送数字l路径信号x1(t)和传递数字Q路径的正交路径(Q路径)(103)的相位路径(1路径)(101) 信号xQ(t)。 接收器(100)包括补偿级(124),其被布置为补偿增益误差g和相位误差&phgr; 在数字l路径信号x1(t)和数字Q路径信号xQ(t)之间。 补偿级(124)具有补偿系数生成级(200),补偿系数应用级(202),增益控制级(208),相对梯度生成级(214)和步骤参数生成级(224) 。 通过使用相对梯度迭代地更新它们来产生施加到数字l路径信号x1(t)和数字Q路径信号xQ(t)的补偿系数W1,1,W1,2,W2,1,W2,2 补偿数字同相信号y1(t)和补偿数字正交信号yQ(t)的步长参数μn,其幅度基于补偿系数W1,1,W1的变化率进行调整 ,2,W2,1,W2,2。
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公开(公告)号:US20150172082A1
公开(公告)日:2015-06-18
申请号:US14390507
申请日:2013-04-10
Applicant: ST-Ericsson SA
Inventor: Fabrice Belveze , Robin Gerzaguet
IPC: H04L27/152 , H04B1/12
CPC classification number: H04L27/1525 , H03D3/009 , H04B1/123 , H04L27/3863
Abstract: A receiver (100) has an In-phase path (1-path) (101) that delivers a digital 1-path signal x1(t) and a Quadrature path (Q-path) (103) that delivers a digital Q-path signal xQ(t). The receiver (100) includes a compensation stage (124) arranged to compensate for gain error g and phase error φ between the digital 1-path signal x1(t) and the digital Q-path signal xQ(t). The compensation stage (124) has a compensation coefficient generation stage (200), a compensation coefficient application stage (202), a gain control stage (208), a relative gradient generation stage (214) and a step parameter generation stage (224). Compensation coefficients W1,1, W1,2, W2,1, W2,2 applied to the digital 1-path signal x1(t) and the digital Q-path signal xQ(t) are generated by iteratively updating them using a relative gradient of the compensated digital in-phase signal γ1(t) and a compensated digital quadrature signal γQ(t), and a step parameter μn, the magnitude of which is adjusted based on a rate of change of the compensation coefficients W1,1, W1,2, W2,1, W2,2.
Abstract translation: 接收器(100)具有传递数字1路信号x1(t)的同相路径(1路径)(101)和传送数字Q路径的正交路径(Q路径)(103) 信号xQ(t)。 接收器(100)包括补偿级(124),其被布置为补偿增益误差g和相位误差&phgr; 在数字1路信号x1(t)和数字Q路径信号xQ(t)之间。 补偿级(124)具有补偿系数生成级(200),补偿系数应用级(202),增益控制级(208),相对梯度生成级(214)和步骤参数生成级(224) 。 通过使用相对梯度迭代地更新它们来产生施加到数字1路信号x1(t)和数字Q路径信号xQ(t)的补偿系数W1,1,W1,2,W2,1,W2,2 补偿数字同相信号γ1(t)和补偿数字正交信号γQ(t)的步长参数μn,其幅度基于补偿系数W1,1,W1的变化率进行调整 ,2,W2,1,W2,2。
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