H04L 25/0202
Channel estimation
Official title: {Channel estimation}
H04L25/0202 (Channel estimation) appears on 10,883 US grants and 12,626 published applications in this corpus.
Search patents in H04L- Granted patents
- 10,883
- Published applications
- 12,626
- Assignees
- 1,461
- Inventors
- 11,654
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 8 | 0 |
| 1993 | 14 | 0 |
| 1994 | 15 | 0 |
| 1995 | 9 | 0 |
| 1996 | 19 | 0 |
| 1997 | 13 | 0 |
| 1998 | 20 | 0 |
| 1999 | 23 | 0 |
| 2000 | 21 | 0 |
| 2001 | 45 | 26 |
| 2002 | 57 | 139 |
| 2003 | 66 | 178 |
| 2004 | 92 | 259 |
| 2005 | 98 | 306 |
| 2006 | 182 | 368 |
| 2007 | 218 | 435 |
| 2008 | 243 | 502 |
| 2009 | 271 | 593 |
| 2010 | 404 | 638 |
| 2011 | 452 | 560 |
| 2012 | 618 | 545 |
| 2013 | 720 | 515 |
| 2014 | 769 | 554 |
| 2015 | 658 | 553 |
| 2016 | 557 | 444 |
| 2017 | 474 | 496 |
| 2018 | 463 | 588 |
| 2019 | 613 | 658 |
| 2020 | 617 | 687 |
| 2021 | 609 | 688 |
| 2022 | 557 | 633 |
| 2023 | 540 | 612 |
| 2024 | 578 | 631 |
| 2025 | 511 | 563 |
| 2026 | 321 | 455 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04L 25/0224Using sounding signals6,787
- H04L 25/0204Of multiple channels3,370
- H04L 25/024Channel estimation algorithms1,942
- H04L 25/0212Of impulse response1,527
- H04L 25/022Of frequency response1,215
- H04L 25/0222Estimation of channel variability498
- H04L 25/021Estimation of channel covariance280
- H04L 25/0238Using blind estimation126
Recent patents
- System for deployment of the two-way relay network involving iterative variational bayesian inference based channel estimation and a method thereof6 Oct 2026US 12,756,595 B2Indian Institute of Technology Kharagpur
- Phase tracking reference signal configuration for rate-splitting multiple input multiple output communications6 Oct 2026US 12,756,596 B2QUALCOMM Incorporated
- Indication for non-causal demodulation reference signal cross-slot combining6 Oct 2026US 12,756,597 B2QUALCOMM Incorporated
- Capability and configuration of a device for providing channel state feedback6 Oct 2026US 12,756,598 B2QUALCOMM Incorporated
- Digital predistortion with hybrid basis-function-based actuator and neural network6 Oct 2026US 12,756,599 B2Analog Devices, Inc.
- Exposure Detection and Reporting For Wireless Communications8 Oct 2026US 2026/0312612 A1Comcast Cable Communications, LLC
- Multi-antenna system for non-terrestrial communications8 Oct 2026US 2026/0312626 A1Astranis Space Technologies Corp.
- Recovery mechanism for a sequence misdetection8 Oct 2026US 2026/0312722 A1QUALCOMM Incorporated
- Method, apparatus, and system for wireless sensing based on multiple groups of wireless devices8 Oct 2026US 2026/0312840 A1
- Techniques for sounding reference signal based beamforming8 Oct 2026US 2026/0312841 A1QUALCOMM Incorporated
Most cited
By later US patents
- Determination of a channel estimate of a transmission channel991US 7,561,637 B2Telefonaktiebolaget'l M Ericsson (Publ) · 2009
- Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system793US 6,473,467 B1QUALCOMM Incorporated · 2002
- Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum691US 5,282,222 A1994
- Spatio-temporal processing for communication580US 6,144,711 ACisco Systems, Inc. · 2000
- Method and system for communicating information in a digital signal540US 8,599,957 B2EMS Technologies, Inc. · 2013