H04L 27/2649
Demodulators
Official title: {Demodulators}
H04L27/2649 (Demodulators) appears on 1,988 US grants and 2,167 published applications in this corpus.
Search patents in H04L- Granted patents
- 1,988
- Published applications
- 2,167
- Assignees
- 551
- Inventors
- 3,063
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 7 | 0 |
| 1997 | 6 | 0 |
| 1998 | 10 | 0 |
| 1999 | 11 | 0 |
| 2000 | 10 | 0 |
| 2001 | 14 | 4 |
| 2002 | 17 | 25 |
| 2003 | 16 | 26 |
| 2004 | 15 | 32 |
| 2005 | 9 | 31 |
| 2006 | 29 | 40 |
| 2007 | 19 | 104 |
| 2008 | 48 | 96 |
| 2009 | 47 | 84 |
| 2010 | 53 | 70 |
| 2011 | 59 | 70 |
| 2012 | 95 | 73 |
| 2013 | 75 | 70 |
| 2014 | 101 | 113 |
| 2015 | 139 | 137 |
| 2016 | 114 | 162 |
| 2017 | 176 | 182 |
| 2018 | 165 | 143 |
| 2019 | 148 | 117 |
| 2020 | 142 | 113 |
| 2021 | 109 | 78 |
| 2022 | 73 | 71 |
| 2023 | 83 | 93 |
| 2024 | 73 | 76 |
| 2025 | 72 | 89 |
| 2026 | 41 | 68 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04L 27/265Fourier transform demodulators725
- H04L 27/26524Fast fourier transform [fft] or discrete fourier transform [dft] demodulators in combination670
- H04L 27/26534Pulse-shaped multi-carrier, i.e. not using rectangular window310
- H04L 27/2653With direct demodulation of individual subcarriers104
- H04L 27/26532Demodulators using other transforms64
- H04L 27/26546With oversampling8
- H04L 27/26542Wavelet transform demodulators4
- H04L 27/26544Demodulators for signals generated by symbol repetition2
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
- 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
- Information processing apparatus, transmission-side apparatus and method18 Aug 2026US 12,712,591 B2Toyota Jidosha Kabushiki Kaisha
- Method and system for adjusting overlap ratio between fast fourier transform (fft) blocks8 Oct 2026US 2026/0312856 A1Ciena Corporation
- Overlaid synchronization signal block for low power-synchronization signal8 Oct 2026US 2026/0313547 A1QUALCOMM Incorporated
- Method and apparatus for determining precoding matrix in mobile communications24 Sep 2026US 2026/0291579 A1MediaTek Singapore Pte. Ltd.
- Sub-prb pucch24 Sep 2026US 2026/0292827 A1QUALCOMM Incorporated
- Parallel de-rate-matching and layer demapping for physical uplink shared channel17 Sep 2026US 2026/0280954 A1NVIDIA 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
- Signal modulation method resistant to echo reflections and frequency offsets296US 9,083,595 B2Cohere Technologies, Inc. · 2015
- OFDM multiple sub-channel communication system292US 7,206,350 B2Unique Broadband Systems, Inc. · 2007
- 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