Variable-precision distributed arithmetic multi-input multi-output equalizer for power-and-area-efficient optical dual-polarization quadrature phase-shift-keying system
    29.
    发明授权
    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

    公开(公告)号:US09036689B2

    公开(公告)日:2015-05-19

    申请号:US13740118

    申请日:2013-01-11

    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.

    摘要翻译: 提出了一种可变精度分布算法(VPDA)多输入多输出(MIMO)均衡器,以减小112 Gbps双极化正交相移键控(DP-QPSK)相干光通信接收机的大小和动态功耗。 VPDA MIMO均衡器通过使用最小均方(LMS)算法同时补偿时间交错逐次逼近寄存器(SAR)的模数转换器(ADC)的信道色散以及各种非理想性。 因此,不需要占地面积的模拟域校准电路。 此外,VPDA MIMO均衡器通过利用每个分散符号的均衡的最小所需分辨率,实现了比传统有限脉冲响应(FIR)均衡器的45%动态功率降低。

    EFFICIENT DATA EXTRACTION METHOD FOR HIGH-TEMPORAL-AND-SPATIAL- RESOLUTION NEAR INFRARED SPECTROSCOPY SYSTEM
    30.
    发明申请
    EFFICIENT DATA EXTRACTION METHOD FOR HIGH-TEMPORAL-AND-SPATIAL- RESOLUTION NEAR INFRARED SPECTROSCOPY SYSTEM 有权
    有效的数据提取方法用于近红外光谱系统的高分辨率和空间分辨率

    公开(公告)号:US20130256533A1

    公开(公告)日:2013-10-03

    申请号:US13744339

    申请日:2013-01-17

    IPC分类号: G01J3/28

    摘要: An efficient method for the extraction of hemodynamic responses in Near-Infrared Spectroscopy (NIRS) systems is proposed to increase the spatial and temporal resolution without hardware overhead. The performance improvement is attributed to high Signal-to-Noise-Ratio (SNR) receivers, a modulation scheme, and a Multi-Input-Multi-Output (MIMO) based data extraction algorithm. The proposed system shows an over 2× increment in the figure of merit (FOM) compared to conventional designs. Experimental results support the validity of the proposed system.

    摘要翻译: 提出了一种在近红外光谱(NIRS)系统中提取血液动力学反应的有效方法,以增加空间和时间分辨率,而无需硬件开销。 性能改进归因于高信噪比(SNR)接收机,调制方案和基于多输入多输出(MIMO)的数据提取算法。 与常规设计相比,所提出的系统显示出超过2倍的品质因数(FOM)。 实验结果支持拟议系统的有效性。