H04L 27/26524
Fast fourier transform [fft] or discrete fourier transform [dft] demodulators in combination
Official title: {Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation}
H04L27/26524 (Fast fourier transform [fft] or discrete fourier transform [dft] demodulators in combination) appears on 670 US grants and 769 published applications in this corpus.
Search patents in H04L- Granted patents
- 670
- Published applications
- 769
- Assignees
- 240
- Inventors
- 1,077
- Latest grant
- 15 Sep 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 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 7 | 2 |
| 2002 | 10 | 13 |
| 2003 | 9 | 10 |
| 2004 | 5 | 9 |
| 2005 | 1 | 9 |
| 2006 | 7 | 14 |
| 2007 | 7 | 67 |
| 2008 | 27 | 48 |
| 2009 | 19 | 37 |
| 2010 | 17 | 20 |
| 2011 | 27 | 31 |
| 2012 | 35 | 25 |
| 2013 | 34 | 32 |
| 2014 | 39 | 35 |
| 2015 | 50 | 50 |
| 2016 | 36 | 39 |
| 2017 | 51 | 56 |
| 2018 | 38 | 40 |
| 2019 | 49 | 37 |
| 2020 | 40 | 40 |
| 2021 | 33 | 17 |
| 2022 | 24 | 28 |
| 2023 | 27 | 27 |
| 2024 | 23 | 28 |
| 2025 | 26 | 28 |
| 2026 | 17 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Frequency deviation compensation scheme and frequency deviation compensation method15 Sep 2026US 12,739,036 B2NEC Corporation
- Resilient machine-to-machine networks8 Sep 2026US 12,732,407 B2
- Signal processing apparatus, optical transmitting apparatus, optical receiving apparatus, optical transmission system, and signal processing method25 Aug 2026US 12,719,583 B2NEC Corporation
- Reference signals for phase jump boundaries16 Jun 2026US 12,659,210 B2QUALCOMM Incorporated
- System and method for modulation and signal classification16 Jun 2026US 12,659,212 B1The Florida International University Board of Trustees
- Method and system for adjusting overlap ratio between fast fourier transform (fft) blocks8 Oct 2026US 2026/0312856 A1Ciena Corporation
- Sub-prb pucch24 Sep 2026US 2026/0292827 A1QUALCOMM Incorporated
- Machine learning-based constellation shaping in wireless communication network17 Sep 2026US 2026/0280959 A1Nokia Solutions and Networks Oy
- Loopback signal, receiver and transmitter for synchronization10 Sep 2026US 2026/0270133 A1Hughes Network Systems, LLC
- System and method for providing multiple bandwidth support using a frequency shifter3 Sep 2026US 2026/0261467 A1Jio Platforms Limited
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
- 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
- Multicode direct sequence spread spectrum213US 5,555,268 A1996
- Orthogonal superposition coding for direct-sequence communications207US 7,317,750 B2Lot 41 Acquisition Foundation, LLC · 2008