发明授权
US09036689B2 Variable-precision distributed arithmetic multi-input multi-output equalizer for power-and-area-efficient optical dual-polarization quadrature phase-shift-keying system
有权
用于功率和面积效率的光学双极化正交相移键控系统的可变精度分布式算法多输入多输出均衡器
- 专利标题： Variable-precision distributed arithmetic multi-input multi-output equalizer for power-and-area-efficient optical dual-polarization quadrature phase-shift-keying system
- 专利标题（中）： 用于功率和面积效率的光学双极化正交相移键控系统的可变精度分布式算法多输入多输出均衡器
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申请号： US13740118申请日： 2013-01-11
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公开(公告)号： US09036689B2公开(公告)日： 2015-05-19
- 发明人: Hyeon Min Bae , Soon Won Kwon
- 申请人： Korea Advanced Institute of Science and Technology
- 申请人地址： KR Seoul
- 专利权人： TeraSquare Co., Ltd.
- 当前专利权人： TeraSquare Co., Ltd.
- 当前专利权人地址： KR Seoul
- 代理机构： Blakely, Sokoloff, Taylor & Zafman LLP
- 主分类号： H03H7/30
- IPC分类号： H03H7/30 ; H04L25/03
摘要：
A variable-precision distributed arithmetic (VPDA) multi-input multi-output (MIMO) equalizer is presented to reduce the size and dynamic power of 112 Gbps dual-polarization quadrature phase-shift-keying (DP-QPSK) coherent optical communication receivers. The VPDA MIMO equalizer compensates for channel dispersion as well as various non-idealities of a time-interleaved successive approximation register (SAR) based analog-to-digital converter (ADC) simultaneously by using a least mean square (LMS) algorithm. As a result, area-hungry analog domain calibration circuits are not required. In addition, the VPDA MIMO equalizer achieves 45% dynamic power reduction over conventional finite impulse response (FIR) equalizers by utilizing the minimum required resolution for the equalization of each dispersed symbol.
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