WO2023078227 - TRANSMITTER AND RECEIVER FOR MIRROR CROSSTALK EVALUATION AND METHODS THEREFOR
National phase entry is expected:
Publication Number
WO/2023/078227
Publication Date
11.05.2023
International Application No.
PCT/CN2022/128893
International Filing Date
01.11.2022
Title **
[English]
TRANSMITTER AND RECEIVER FOR MIRROR CROSSTALK EVALUATION AND METHODS THEREFOR
[French]
ÉMETTEUR ET RÉCEPTEUR D'ÉVALUATION DE DIAPHONIE À EFFET MIROIR ET PROCÉDÉS ASSOCIÉS
Applicants **
HUAWEI TECHNOLOGIES CO., LTD.
Inventors
JIANG, Zhiping
TANG, Xuefeng
CHANG, Junho
Priority Data
17/518,928
04.11.2021
US
Application details
| Total Number of Claims/PCT | * |
| Number of Independent Claims | * |
| Number of Priorities | * |
| Number of Multi-Dependent Claims | * |
| Number of Drawings | * |
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| Number of Office Actions | * |
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International Searching Authority |
CNIPA
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| * | |
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2165 | |
| EPO | Filing, Examination, Granting | 16845 | |
| Japan | Filing, Examination, Granting | 2440 | |
| South Korea | Filing, Examination, Granting | 2712 | |
| USA | Filing, Examination, Granting | 6140 |
Total:
30,302
The term for entry into the National Phase has expired. This quotation is for informational purposes only
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Abstract[English]
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.[French]
Les systèmes et les procédés divulgués de détection de diaphonie à effet miroir entre des bandes de fréquence également au-dessus et au-dessous de la fréquence centrale d'un système de multiplexage de sous-porteuse numérique comprennent : un émetteur configuré pour insérer des symboles de puissance nulle sur la moitié des bandes de fréquence au-dessous de la fréquence centrale, et pour insérer d'autres symboles de puissance nulle, se chevauchant partiellement dans le temps avec les premiers symboles de puissance nulle, sur l'autre moitié des bandes de fréquence au-dessus de la fréquence centrale. Un récepteur annule l'émission spontanée amplifiée (ASE) et d'autres bruits pendant la partie de chevauchement de tous les symboles de puissance nulle, puis utilise la puissance détectée pendant la partie restante de chaque symbole de puissance nulle dans chaque bande de fréquence pour évaluer avec précision la diaphonie à effet miroir à partir de la bande de fréquence correspondante sur le côté opposé de la fréquence centrale.