Title:
TRANSMITTER AND RECEIVER FOR MIRROR CROSSTALK EVALUATION AND METHODS THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/078227
Kind Code:
A1
Abstract:
The disclosed systems and methods for detecting mirror crosstalk between frequency bands equally above and below the center frequency of a Digital Subcarrier Multiplexing system include: a transmitter configured to insert zero-power symbols on half the frequency bands below center frequency, and insert other zero-power symbols, partially overlapping in time with the first zero-power symbols, on the other half of the frequency bands above center frequency. A receiver zeroes out ASE and other noises during the overlapping portion of all the zero-power symbols, then uses the power detected during the remaining portion of each zero-power symbol in each frequency band to accurately evaluate the mirror crosstalk from the corresponding frequency band on the opposite side of center frequency.
Inventors:
JIANG ZHIPING (CA)
TANG XUEFENG (CA)
CHANG JUNHO (CA)
TANG XUEFENG (CA)
CHANG JUNHO (CA)
Application Number:
PCT/CN2022/128893
Publication Date:
May 11, 2023
Filing Date:
November 01, 2022
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L25/02
Foreign References:
| CN110474856A | 2019-11-19 | |||
| CN108370360A | 2018-08-03 | |||
| CN113381951A | 2021-09-10 | |||
| US20130195452A1 | 2013-08-01 | |||
| EP3349374A1 | 2018-07-18 |
Download PDF: