Interference rejection in cooperative multi-point communication
US-2024204891-A1 · Jun 20, 2024 · US
Estimation of channel covariance
Estimation of channel covariance · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04L25/021 |
| Official title | {Estimation of channel covariance} |
| Display label | Estimation of channel covariance |
| Total patents | 384 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 25 |
| 2016 | 29 |
| 2017 | 29 |
| 2018 | 27 |
| 2019 | 24 |
| 2020 | 31 |
| 2021 | 28 |
| 2022 | 45 |
| 2023 | 46 |
| 2024 | 48 |
| 2025 | 45 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Resuming packet services in a mobile network
US-2017359823-A1 · Dec 14, 2017 · US
Time division duplex (TDD) uplink downlink (UL-DL) reconfiguration
US-9844054-B2 · Dec 12, 2017 · US
Methods and arrangements for csi prediction
US-2017346580-A1 · Nov 30, 2017 · US
Resuming packet services in a mobile network
US-9750017-B2 · Aug 29, 2017 · US
Downlink control signalling for indication of interfering layers
US-9621242-B2 · Apr 11, 2017 · US
Beamforming using base and differential codebooks
US-2016315678-A1 · Oct 27, 2016 · US
High-throughput beamforming MIMO receiver for millimeter wave communication and method
US-9473229-B2 · Oct 18, 2016 · US
Methods and apparatus for directing a beam towards a device in the presence of interference
US-9450660-B1 · Sep 20, 2016 · US
Downlink control signalling for indication of interfering layers
US-2016254849-A1 · Sep 1, 2016 · US
Time division duplex (tdd) uplink downlink (ul-dl) reconfiguration
US-2016255628-A1 · Sep 1, 2016 · US
Method for semi-statically adapting uplink multiple-input multiple-output transmission
US-9432979-B1 · Aug 30, 2016 · US
Beamforming using base and differential codebooks
US-9419694-B2 · Aug 16, 2016 · US
Method and apparatus for channel estimation using localized SINR in wireless communication systems
US-9413563-B2 · Aug 9, 2016 · US
Method and apparatus of channel estimation in multi-user massive MIMO systems
US-9401824-B1 · Jul 26, 2016 · US
Methods and Devices for Determining Link Adaptation Parameters
US-2016204844-A1 · Jul 14, 2016 · US
Two-dimensional UE pairing in MIMO systems
US-9392607-B2 · Jul 12, 2016 · US
Time division duplex (TDD) uplink downlink (UL-DL) reconfiguration
US-9386608-B2 · Jul 5, 2016 · US
Interference Rejection Based Maximum SINR Pre-Filtering For Multiuser Detection In An LTE Uplink
US-2016192210-A1 · Jun 30, 2016 · US
Mutual wlan and wan interference mitigation in unlicensed spectrum
US-2016182134-A1 · Jun 23, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04L25/021?
- CPC H04L25/021 is the Cooperative Patent Classification code for “Estimation of channel covariance.”
- How many patents are filed under CPC H04L25/021 (Estimation of channel covariance)?
- Our database includes 384 publications tagged with this CPC code.
- Is patent activity under CPC H04L25/021 growing?
- Publication counts under this code: 48 in 2024 vs 45 in 2025 (latest complete years).