Invention Grant
- Patent Title: Method and apparatus for despreading in optical domain
-
Application No.: US15857019Application Date: 2017-12-28
-
Publication No.: US10171175B2Publication Date: 2019-01-01
- Inventor: Liming Fang , Lei Zhou , Meng Sui , Xiaofeng Zhang
- Applicant: Huawei Technologies Co., Ltd.
- Applicant Address: CN Shenzhen
- Assignee: Huawei Technologies Co., Ltd.
- Current Assignee: Huawei Technologies Co., Ltd.
- Current Assignee Address: CN Shenzhen
- Agency: Conley Rose, P.C.
- Main IPC: H04B10/00
- IPC: H04B10/00 ; H04B10/61 ; H04B10/60 ; H04B10/25 ; H04J13/16

Abstract:
An apparatus for despreading in an optical domain configured to split a received optical signal into a first optical signal and a second optical signal, perform phase deflection on the second optical signal, output a third optical signal, perform phase deflection on the first optical signal and the third optical signal, output a fourth optical signal and a fifth optical signal to a balanced receiver, and superimpose the fourth optical signal and the fifth optical signal to generate a first electrical signal. A multiplication operation in conventional code division multiple access (CDMA) despreading is transferred from an electrical domain to an optical domain such that a chip rate can be easily raised to 20 gigahertz (GHz) or even to 25 GHz, a maximum rate of 100 gigabits per second (Gbps) can be provided in a single wavelength, and a user requirement for high bandwidth can be met.
Public/Granted literature
- US20180145767A1 Method and Apparatus for Despreading in Optical Domain Public/Granted day:2018-05-24
Information query