H04L 27/266
Fine or fractional frequency offset determination and synchronisation
Official title: {Fine or fractional frequency offset determination and synchronisation}
H04L27/266 (Fine or fractional frequency offset determination and synchronisation) appears on 325 US grants and 301 published applications in this corpus.
Search patents in H04L- Granted patents
- 325
- Published applications
- 301
- Assignees
- 164
- Inventors
- 737
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 7 | 0 |
| 2002 | 4 | 7 |
| 2003 | 4 | 5 |
| 2004 | 4 | 12 |
| 2005 | 7 | 11 |
| 2006 | 12 | 13 |
| 2007 | 9 | 12 |
| 2008 | 8 | 16 |
| 2009 | 13 | 15 |
| 2010 | 18 | 11 |
| 2011 | 18 | 16 |
| 2012 | 14 | 11 |
| 2013 | 17 | 10 |
| 2014 | 13 | 5 |
| 2015 | 13 | 12 |
| 2016 | 14 | 4 |
| 2017 | 9 | 25 |
| 2018 | 15 | 13 |
| 2019 | 21 | 34 |
| 2020 | 29 | 25 |
| 2021 | 25 | 13 |
| 2022 | 15 | 7 |
| 2023 | 14 | 9 |
| 2024 | 4 | 8 |
| 2025 | 10 | 5 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Determining frequency offset of signal under test30 Dec 2025US 12,513,038 B1Keysight Technologies, Inc.
- Method of large frequency offset estimation for an OFDM communications system using reference signals11 Nov 2025US 12,470,450 B2Hong Kong Applied Science and Technology Research Institute Company Limited
- Frequency offset estimation method and apparatus, electronic device, and computer-readable storage medium14 Oct 2025US 12,445,338 B2Sanechips Technology Co., Ltd.
- Carrier phase tracking method and device for orthogonal frequency division multiplexing multi-carrier system30 Sep 2025US 12,432,106 B2Datang Mobile Communications Equipment Co., Ltd.
- Extremely high throughput trigger based (EHTTB) legacy preamble puncturing for fine timing and frequency offset estimation9 Sep 2025US 12,413,356 B2Cisco Technology, Inc.
- Band gap mitigation during component carrier sensing8 Oct 2026US 2026/0312857 A1Intel Corporation
- Communication method and apparatus based on ppdu15 Jan 2026US 2026/0019208 A1Huawei Technologies Co., Ltd.
- Techniques for Estimation and Compensation of Frequency Offset in OFDM-based Communication System28 Aug 2025US 2025/0274329 A1GCT Semiconductor, Inc.
- Communication method and communication apparatus10 Jul 2025US 2025/0226953 A1
- Noise power and signal-to-noise ratio estimation method and device in wireless communication system12 Jun 2025US 2025/0193861 A1Samsung Electronics Co., Ltd.
Most cited
By later US patents
- Multicarrier transmission system for irregular transmission of data blocks90US 6,438,173 B1Infineon Technologies AG · 2002
- Synchronization in a multiple-input/multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system for wireless applications89US 7,009,931 B2Nortel Networks Limited · 2006
- Burst carrier frequency synchronization and iterative frequency-domain frame synchronization for OFDM83US 6,618,452 B1Telefonaktiebolaget LM Ericsson (publ) · 2003
- Method to indicate synchronization lock of a remote station with a base station78US 5,943,375 AAT&T Wireless Services, Inc. · 1999
- Synchronization method and system for a digital receiver69US 6,058,101 AIndustrial Technology Research Institute · 2000