H04L 27/2698
Double density ofdm/oqam system
Official title: {double density OFDM/OQAM system, e.g. OFDM/OQAM-IOTA system}
H04L27/2698 (Double density ofdm/oqam system) appears on 132 US grants and 136 published applications in this corpus.
Search patents in H04L- Granted patents
- 132
- Published applications
- 136
- Assignees
- 58
- Inventors
- 198
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 6 |
| 2005 | 2 | 1 |
| 2006 | 4 | 0 |
| 2007 | 2 | 0 |
| 2008 | 0 | 3 |
| 2009 | 0 | 4 |
| 2010 | 0 | 1 |
| 2011 | 4 | 6 |
| 2012 | 3 | 2 |
| 2013 | 4 | 1 |
| 2014 | 5 | 10 |
| 2015 | 11 | 11 |
| 2016 | 6 | 12 |
| 2017 | 14 | 19 |
| 2018 | 15 | 15 |
| 2019 | 20 | 11 |
| 2020 | 10 | 7 |
| 2021 | 11 | 5 |
| 2022 | 6 | 2 |
| 2023 | 2 | 6 |
| 2024 | 3 | 7 |
| 2025 | 6 | 4 |
| 2026 | 1 | 3 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Phase noise suppression method and related apparatus10 Mar 2026US 12,574,278 B2Huawei Technologies Co., Ltd.
- Modulation scheme conversion device and gateway25 Nov 2025US 12,483,459 B2Korea Advanced Institute of Science and Technology
- Methods and apparatus for using a phase tracking reference signal with a single carrier waveform18 Nov 2025US 12,476,858 B2Huawei Technologies Co., Ltd.
- Methods and systems for digital representation of encoded communications data and simplified evaluation of precoding in systems using phase-cyclical precoding14 Oct 2025US 12,445,339 B2Wavestream Corporation
- Methods and apparatus for using a phase tracking reference signal with a single carrier waveform29 Jul 2025US 12,375,338 B2Huawei Technologies Co., Ltd.
- Coding Scheme Determining Method and Communication Apparatus19 Mar 2026US 2026/0081711 A1Huawei Technologies Co., Ltd.
- Symbol processing method, apparatus, and system19 Mar 2026US 2026/0081815 A1Huawei Technologies Co., Ltd.
- Modulation scheme conversion device and gateway19 Feb 2026US 2026/0052056 A1Korea Advanced Institute of Science and Technology
- Ofdm transmitter device having a symbol generator for generating non-zero control symbols, and ofdm transmission method including generating non-zero control symbols19 Jun 2025US 2025/0202753 A1Sun Patent Trust
- Methods and apparatus for pulse shaped and overlapped phase tracking reference signals1 May 2025US 2025/0141719 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- System and method for reducing adjacent channel interference (ACI) in a multicarrier modulation system31US 6,934,246 B2Motorola, Inc. · 2005
- Range extension mode for WiFi28US 9,712,358 B2Marvell World Trade Ltd. · 2017
- Construction of a multicarrier signal18US 6,278,686 B1France Telecom and Telediffusion de France · 2001
- Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal18US 9,148,251 B2LG Electronics Inc. · 2015
- Apparatus for transmitting and receiving a signal and method of transmitting and receiving a signal16US 8,867,640 B2LG Electronics Inc. · 2014