发明授权
- 专利标题: Processing data in a coherent optical communication system
- 专利标题(中): 在相干光通信系统中处理数据
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申请号: US13434213申请日: 2012-03-29
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公开(公告)号: US09025963B2公开(公告)日: 2015-05-05
- 发明人: Christian Malouin , Theodore John Schmidt , Bo Zhang , Elias Simpson , Roberto Marcoccia
- 申请人: Christian Malouin , Theodore John Schmidt , Bo Zhang , Elias Simpson , Roberto Marcoccia
- 申请人地址: US CA Sunnyvale
- 专利权人: Juniper Networks, Inc.
- 当前专利权人: Juniper Networks, Inc.
- 当前专利权人地址: US CA Sunnyvale
- 代理机构: Shumaker & Sieffert, P.A.
- 主分类号: H04B10/61
- IPC分类号: H04B10/61
摘要:
This disclosure describes techniques to sample electrical data streams in coherent receivers. For instance, an analog-to-digital converter (ADC) samples the received electrical data stream at a sampling rate that is nominally twice or greater than twice the symbol rate of the electrical data stream that the ADC receives. A digital filter receives the digital data stream from the ADC, and digitally filters the digital data streams to output a filtered digital electrical data stream at an effective sampling rate that is less than the sampling rate and less than twice the symbol rate, and greater than or equal to the symbol rate.