发明授权
- 专利标题: Wireless receiver for removing direct current offset component
- 专利标题(中): 用于去除直流偏移分量的无线接收器
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申请号: US11443199申请日: 2006-05-30
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公开(公告)号: US07593485B2公开(公告)日: 2009-09-22
- 发明人: Man Shing Wong , Daniel B. Schwartz
- 申请人: Man Shing Wong , Daniel B. Schwartz
- 申请人地址: US TX Austin
- 专利权人: Freescale Semiconductor, Inc.
- 当前专利权人: Freescale Semiconductor, Inc.
- 当前专利权人地址: US TX Austin
- 代理商 Charles Bergere
- 主分类号: H04L25/06
- IPC分类号: H04L25/06
摘要:
A wireless receiver includes a hardware (HW) block, a converter block and a digital signal processor (DSP). The HW block receives a wireless signal having a first DC Offset Component (DCOC), removes a portion of the first DCOC to produce a residual DCOC centered at DC, and generates parameters that estimate the residual DCOC. The converter block is coupled to the HW block and receives the residual DCOC centered at DC and converts it to a residual DCOC centered at IF. The DSP is coupled to the HW block and the converter block and receives the residual DCOC centered at IF from the converter block and the parameters from the HW block, and uses the parameters to eliminate the residual DCOC, and generate a baseband signal that is substantially free of the first DCOC and the residual DCOC.
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