Automatic training of echo canceller in upstream signal receivers on quiet subcarriers
US-2025080163-A1 · Mar 6, 2025 · US
using initial training sequence
using initial training sequence · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04B3/238 |
| Official title | {using initial training sequence} |
| Display label | using initial training sequence |
| Total patents | 47 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 5 |
| 2019 | 7 |
| 2020 | 9 |
| 2021 | 6 |
| 2022 | 7 |
| 2023 | 4 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Techniques for power efficient and smart echo cancellation
US-2024405799-A1 · Dec 5, 2024 · US
Full-duplex echo cancellation
US-11888545-B1 · Jan 30, 2024 · US
Echo canceller training in full duplex networks
US-11876753-B2 · Jan 16, 2024 · US
Method and apparatus for training a full-duplex communication link
US-11843483-B2 · Dec 12, 2023 · US
Machine learning based receiver performance improvement using peak reduction tones
US-11804998-B2 · Oct 31, 2023 · US
Machine learning based uplink coverage enhancement using peak reduction tones
US-11677605-B2 · Jun 13, 2023 · US
Aggregating hardware loopback
US-11563857-B2 · Jan 24, 2023 · US
Echo canceller training in full duplex networks
US-2022393848-A1 · Dec 8, 2022 · US
Signal transmission method, signal transmission apparatus and display device
US-11508278-B2 · Nov 22, 2022 · US
Method and Apparatus for Training a Full-Duplex Communication Link
US-2022247603-A1 · Aug 4, 2022 · US
Echo canceller training in full duplex networks
US-11394523-B2 · Jul 19, 2022 · US
Training Optimization of Multiple Lines in a Vectored System Using a Prepared-to-Join Group
US-2022209819-A1 · Jun 30, 2022 · US
Third order intermodulation distortion cancellation
US-11374615-B1 · Jun 28, 2022 · US
Training optimization of multiple lines in a vectored system using a prepared-to-join group
US-11245436-B2 · Feb 8, 2022 · US
Machine learning based uplink coverage enhancement using peak reduction tones
US-2021266210-A1 · Aug 26, 2021 · US
Machine Learning Based Receiver Performance Improvement Using Peak Reduction Tones
US-2021266036-A1 · Aug 26, 2021 · US
Signal transmission method, signal transmission apparatus and display device
US-2021217340-A1 · Jul 15, 2021 · US
Full-duplex cancellation
US-11025297-B2 · Jun 1, 2021 · US
Echo canceller training in full duplex networks
US-2021160041-A1 · May 27, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04B3/238?
- CPC H04B3/238 is the Cooperative Patent Classification code for “using initial training sequence.”
- How many patents are filed under CPC H04B3/238 (using initial training sequence)?
- Our database includes 47 publications tagged with this CPC code.
- Is patent activity under CPC H04B3/238 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).