公开(公告)号：US09225429B2

公开(公告)日：2015-12-29

申请号：US14138093

申请日：2013-12-22

Applicant: ZTE Corporation

Inventor： Jianjun Yu ,  Bo Huang

IPC: H04B10/61

CPC classification number: H04B10/613 ,  H04B10/616

Abstract: Systems, devices and techniques for processing received QPSK modulated optical signals include sampling the received signal at twice the baud rate, thereby producing samples that are then processed as 9-QAM symbols using a decision directed least squares optimization method. Data bits are then recovered from the resulting symbol estimates. The received optical signal may also include dual polarized signals for increased bandwidth capacity.

Abstract translation: 用于处理接收到的QPSK调制光信号的系统，设备和技术包括以两倍于波特率对接收到的信号进行采样，由此产生样本，然后使用决策导向的最小二乘优化方法将其处理为9-QAM符号。 然后从所得到的符号估计中恢复数据位。 所接收的光信号还可以包括用于增加带宽容量的双极化信号。

公开(公告)号：US11503297B2

公开(公告)日：2022-11-15

申请号：US17295266

申请日：2019-11-20

Applicant: ZTE Corporation

Inventor： Hong Wang ,  Ke Xu ,  Bo Huang ,  Chengqiang Liu ,  Sheng Luo ,  Guoning Lu ,  Degen Zhen

IPC: H04N19/42 ,  H04N19/60 ,  H04N19/85 ,  H04N19/124

Abstract: Provided are method and device for inverse quantization and inverse transformation and non-transitory computer-readable storage medium. The method includes: performing inverse quantization processing on input data; determining whether secondary inverse transform processing is necessary; performing, in response to determining that the secondary inverse transform processing is necessary, the secondary inverse transform processing on data obtained through the inverse quantization processing, first one-dimensional inverse transform control processing on data obtained through the secondary inverse transform processing, and second one-dimensional inverse transform control processing on data obtained through the first one-dimensional inverse transform control processing; and performing, in response to determining that the secondary inverse transform processing is unnecessary, first one-dimensional inverse transform control processing on the data obtained through the inverse quantization processing, and second one-dimensional inverse transform control processing on the data obtained through the first one-dimensional inverse transform control processing.