H04L 27/2634
Inverse fast fourier transform [ifft] or inverse discrete fourier transform [idft] modulators
Official title: {Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation}
H04L27/2634 (Inverse fast fourier transform [ifft] or inverse discrete fourier transform [idft] modulators) appears on 2,008 US grants and 2,433 published applications in this corpus.
Search patents in H04L- Granted patents
- 2,008
- Published applications
- 2,433
- Assignees
- 398
- Inventors
- 2,582
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 1 |
| 2002 | 8 | 17 |
| 2003 | 9 | 5 |
| 2004 | 2 | 6 |
| 2005 | 0 | 13 |
| 2006 | 8 | 13 |
| 2007 | 12 | 75 |
| 2008 | 25 | 62 |
| 2009 | 19 | 52 |
| 2010 | 23 | 50 |
| 2011 | 49 | 74 |
| 2012 | 49 | 86 |
| 2013 | 69 | 103 |
| 2014 | 106 | 114 |
| 2015 | 136 | 119 |
| 2016 | 116 | 116 |
| 2017 | 134 | 131 |
| 2018 | 118 | 146 |
| 2019 | 145 | 178 |
| 2020 | 164 | 205 |
| 2021 | 186 | 147 |
| 2022 | 121 | 143 |
| 2023 | 147 | 153 |
| 2024 | 154 | 170 |
| 2025 | 125 | 144 |
| 2026 | 70 | 110 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Data sending method, data receiving method, and related apparatus6 Oct 2026US 12,756,614 B2Huawei Technologies Co., Ltd.
- Method and apparatus for synchronization for Vehicle-to-X communication6 Oct 2026US 12,757,134 B2Innovative Technology Lab Co., Ltd.
- Synchronization signal block groups associated with multiple waveforms for a wireless communication network supporting a high frequency range29 Sep 2026US 12,750,800 B2Lenovo (Singapore) Pte. Ltd.
- Resilient machine-to-machine networks8 Sep 2026US 12,732,407 B2
- Waveform indication in wireless communication networks1 Sep 2026US 12,726,393 B2Telefonaktiebolaget LM Ericsson (publ)
- Number of supported ul muting patterns per pusch type and per slot1 Oct 2026US 2026/0303431 A1QUALCOMM Incorporated
- Exploitation of Pilot Signals for Blind Resilient Detection and Geo-Observable Estimation of Navigation Signals24 Sep 2026US 2026/0287755 A1
- Device and method for using one piece of downlink conrol information in order to schedule plurality of serving cells in wireless communication system24 Sep 2026US 2026/0291558 A1LG Electronics Inc.
- Precoding matrix indication method and apparatus, and indication information receiving method and apparatus24 Sep 2026US 2026/0291559 A1Beijing Xiaomi Mobile Software Co., Ltd.
- Methods for time-frequency waveform modulation and generation24 Sep 2026US 2026/0291799 A1Zte Corporation
Most cited
By later US patents
- 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
- Intelligent backhaul radio and antenna system311US 8,467,363 B2CBF Networks, Inc. · 2013
- Signal modulation method resistant to echo reflections and frequency offsets296US 9,083,595 B2Cohere Technologies, Inc. · 2015
- Channel selection for a hybrid fiber coax network264US 6,334,219 B1ADC Telecommunications, Inc. · 2001
- Adaptive time diversity and spatial diversity for OFDM231US 6,985,434 B2Nortel Networks Limited · 2006