H04L 27/2695
With channel estimation
Official title: {with channel estimation, e.g. determination of delay spread, derivative or peak tracking (channel estimation H04L25/0202)}
H04L27/2695 (With channel estimation) appears on 461 US grants and 471 published applications in this corpus.
Search patents in H04L- Granted patents
- 461
- Published applications
- 471
- Assignees
- 188
- Inventors
- 902
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 5 |
| 2003 | 0 | 6 |
| 2004 | 1 | 9 |
| 2005 | 2 | 12 |
| 2006 | 9 | 11 |
| 2007 | 8 | 15 |
| 2008 | 9 | 13 |
| 2009 | 12 | 16 |
| 2010 | 16 | 21 |
| 2011 | 15 | 18 |
| 2012 | 23 | 27 |
| 2013 | 43 | 18 |
| 2014 | 32 | 21 |
| 2015 | 32 | 27 |
| 2016 | 22 | 27 |
| 2017 | 32 | 33 |
| 2018 | 25 | 20 |
| 2019 | 26 | 29 |
| 2020 | 26 | 29 |
| 2021 | 39 | 22 |
| 2022 | 19 | 32 |
| 2023 | 22 | 23 |
| 2024 | 19 | 13 |
| 2025 | 16 | 15 |
| 2026 | 8 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- High precision timestamp detection for improved cable modem clock synchronization15 Sep 2026US 12,739,092 B2MaxLinear, Inc.
- Methods, apparatus, and systems for delay spread measurement, reporting, and cyclic prefix determination11 Aug 2026US 12,706,653 B2InterDigital Patent Holdings, Inc.
- Transmitter and receiver for, and method of, transmitting and receiving symbols over time varying channels with doppler spread24 Feb 2026US 12,562,949 B2Continental Automotive Technologies GmbH
- Methods and devices of packet detection for MIMO systems17 Feb 2026US 12,556,235 B2Morse Micro Pty. Ltd.
- Group common demodulation reference signal for multiple user equipments17 Feb 2026US 12,557,085 B2QUALCOMM Incorporated
- Communications channel impairment detection system17 Sep 2026US 2026/0280958 A1Avago Technologies International Sales Pte. Limited
- Processing reference signal across multiple signal carriers11 Jun 2026US 2026/0163764 A1Nokia Technologies Oy
- Signaling of sensing target modeling information14 May 2026US 2026/0133307 A1QUALCOMM Incorporated
- Techniques for transmitter equalization based on sampling time offsets associated with a user equipment23 Apr 2026US 2026/0113222 A1QUALCOMM Incorporated
- Short training sequence design method and apparatus9 Apr 2026US 2026/0100873 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Method and apparatus for multicarrier channel estimation and synchronization using pilot sequences73US 7,139,320 B1Texas Instruments Incorporated · 2006
- Wireless transmitting apparatus, wireless receiving apparatus, wireless transmission method, wireless reception method, wireless communication system, and wireless communication method69US 8,248,975 B2Nippon Telegraph and Telephone Corporation · 2012
- Methods and apparatus for use in reducing residual phase error in OFDM communication signals67US 6,928,120 B1Cingular Wireless II, LLC · 2005
- OFDM packet communication receiver60US 7,058,002 B1Nippon Telegraph and Telephone Corporation · 2006
- Method and circuit arrangement for the correction of phase and/or frequency errors in digital multicarrier signals50US 6,304,545 B1Deutsche Thomson-Brandt GmbH · 2001