H04L 27/2628
Inverse fourier transform modulators
Official title: {Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators (H04L27/2634 takes precedence)}
H04L27/2628 (Inverse fourier transform modulators) appears on 699 US grants and 799 published applications in this corpus.
Search patents in H04L- Granted patents
- 699
- Published applications
- 799
- Assignees
- 256
- Inventors
- 1,117
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 2 |
| 2002 | 8 | 17 |
| 2003 | 10 | 6 |
| 2004 | 9 | 14 |
| 2005 | 6 | 16 |
| 2006 | 17 | 15 |
| 2007 | 7 | 65 |
| 2008 | 27 | 45 |
| 2009 | 27 | 30 |
| 2010 | 23 | 22 |
| 2011 | 19 | 14 |
| 2012 | 30 | 19 |
| 2013 | 18 | 24 |
| 2014 | 26 | 29 |
| 2015 | 40 | 46 |
| 2016 | 28 | 38 |
| 2017 | 44 | 47 |
| 2018 | 41 | 46 |
| 2019 | 52 | 41 |
| 2020 | 41 | 42 |
| 2021 | 48 | 48 |
| 2022 | 44 | 35 |
| 2023 | 46 | 29 |
| 2024 | 24 | 36 |
| 2025 | 29 | 47 |
| 2026 | 19 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Signal transmission method and signal reception method of heterogeneous systems sharing frequency band6 Oct 2026US 12,756,613 B2Electronics and Telecommunications Research Institute
- Method and device for transmitting or receiving STF for new numerology in wireless LAN system11 Aug 2026US 12,706,791 B2LG Electronics Inc.
- Method and apparatus for transmitting and receiving a signal4 Aug 2026US 12,701,036 B2Samsung Electronics Co., Ltd.
- Frequency-domain data merging method and apparatus, storage medium, and electronic apparatus21 Jul 2026US 12,690,023 B2Zte Corporation
- Unified and configurable waveform framework for 6G14 Jul 2026US 12,683,847 B2Mediatek Inc.
- Channel estimation based on time domain signals1 Oct 2026US 2026/0303271 A1QUALCOMM Incorporated
- Sensing sequence sending method, sensing sequence receiving method, and communication node and sensing system1 Oct 2026US 2026/0304139 A1Zte Corporation
- Efficient frequency-domain beamforming3 Sep 2026US 2026/0261301 A1CesiumAstro, Inc.
- Communication Method and Apparatus27 Aug 2026US 2026/0254687 A1Huawei Technologies Co., Ltd.
- Signal processing apparatus20 Aug 2026US 2026/0246684 A1NEC Corporation
Most cited
By later US patents
- Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum691US 5,282,222 A1994
- Transport of payload information and control messages on multiple orthogonal carriers spread throughout substantially all of a frequency bandwith320US 6,275,990 B1ADC Telecommunications, Inc. · 2001
- Multicarrier frequency hopping communications system274US 5,548,582 AU. S. Philips Corporation · 1996
- Channel selection for a hybrid fiber coax network264US 6,334,219 B1ADC Telecommunications, Inc. · 2001
- Dynamic bandwidth allocation220US 7,069,577 B2SDC Telecommunications, Inc. · 2006