H04L 27/2639
Modulators using other transforms
Official title: {Modulators using other transforms, e.g. discrete cosine transforms, Orthogonal Time Frequency and Space [OTFS] or hermetic transforms}
H04L27/2639 (Modulators using other transforms) appears on 180 US grants and 241 published applications in this corpus.
Search patents in H04L- Granted patents
- 180
- Published applications
- 241
- Assignees
- 78
- Inventors
- 319
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 2 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 3 |
| 2013 | 0 | 2 |
| 2014 | 3 | 5 |
| 2015 | 4 | 1 |
| 2016 | 3 | 2 |
| 2017 | 4 | 21 |
| 2018 | 14 | 8 |
| 2019 | 10 | 14 |
| 2020 | 21 | 23 |
| 2021 | 18 | 19 |
| 2022 | 18 | 16 |
| 2023 | 23 | 36 |
| 2024 | 22 | 34 |
| 2025 | 23 | 23 |
| 2026 | 12 | 27 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Channel state information reference signals in orthogonal time frequency space19 May 2026US 12,634,064 B2QUALCOMM Incorporated
- Air to ground signaling enhancement for cross-waveform interference measurement and reporting12 May 2026US 12,627,353 B2QUALCOMM Incorporated
- Multi-carrier connection design via intelligent exploitation of multi-user diversity in delay-doppler domain21 Apr 2026US 12,609,856 B2
- Systems and methods for spectrum-controlled waveform multiplexing14 Apr 2026US 12,603,804 B2Samsung Electronics Co., Ltd.
- Communication control apparatus, communication system, and method14 Apr 2026US 12,603,806 B2NEC Corporation
- Wireless communication device, wireless communication system, communication control method, and non-transitory computer-readable medium17 Sep 2026US 2026/0280942 A1NEC Corporation
- Methods of receiving and transmitting binary data sequences in otfs-based multi-user scma communication systems with coordinated multipoint, and receiver and transmitter implementing the method10 Sep 2026US 2026/0270130 A1Continental Automotive Technologies GmbH
- Communication Method and Apparatus27 Aug 2026US 2026/0254687 A1Huawei Technologies Co., Ltd.
- Overlaid frequency-domain reflection modulation20 Aug 2026US 2026/0246672 A1QUALCOMM Incorporated
- Transmitter and transmission method20 Aug 2026US 2026/0247350 A1Ntt Docomo, Inc.
Most cited
By later US patents
- Signal modulation method resistant to echo reflections and frequency offsets296US 9,083,595 B2Cohere Technologies, Inc. · 2015
- Modulation and equalization in an orthonormal time-frequency shifting communications system109US 9,071,286 B2Cohere Technologies, Inc. · 2015
- Modulation and equalization in an orthonormal time-frequency shifting communications system109US 9,294,315 B2Cohere Technologies, Inc. · 2016
- OTFS methods of data channel characterization and uses thereof109US 9,668,148 B2Cohere Technologies, Inc. · 2017
- Modulation and equalization in an orthonormal time-frequency shifting communications system107US 9,548,840 B2Cohere Technologies, Inc. · 2017