H04L 27/3818
Using coherent demodulation, i.e. using one or more nominally phase synchronous carriers
Official title: {using coherent demodulation, i.e. using one or more nominally phase synchronous carriers (H04L27/227 and H04L27/389 take precedence)}
H04L27/3818 (Using coherent demodulation, i.e. using one or more nominally phase synchronous carriers) appears on 366 US grants and 241 published applications in this corpus.
Search patents in H04L- Granted patents
- 366
- Published applications
- 241
- Assignees
- 186
- Inventors
- 654
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 12 | 0 |
| 1987 | 4 | 0 |
| 1988 | 9 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 10 | 0 |
| 1998 | 8 | 0 |
| 1999 | 16 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 4 |
| 2002 | 8 | 7 |
| 2003 | 6 | 5 |
| 2004 | 11 | 11 |
| 2005 | 4 | 6 |
| 2006 | 8 | 4 |
| 2007 | 9 | 8 |
| 2008 | 9 | 9 |
| 2009 | 6 | 13 |
| 2010 | 7 | 10 |
| 2011 | 8 | 8 |
| 2012 | 10 | 12 |
| 2013 | 10 | 22 |
| 2014 | 18 | 16 |
| 2015 | 21 | 13 |
| 2016 | 15 | 13 |
| 2017 | 12 | 19 |
| 2018 | 14 | 10 |
| 2019 | 13 | 10 |
| 2020 | 15 | 19 |
| 2021 | 21 | 7 |
| 2022 | 3 | 2 |
| 2023 | 8 | 9 |
| 2024 | 2 | 2 |
| 2025 | 3 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for fronthaul downlink IQ data compression16 Jun 2026US 12,659,215 B2Quanta Cloud Technology Inc.
- Scrambling for probabilistic constellation schemes in wireless communications26 May 2026US 12,640,976 B2QUALCOMM Incorporated
- Transmission methods of probabilistic shaping modulation in wireless communications30 Dec 2025US 12,512,929 B2Mediatek Inc.
- Baseband receiver circuit16 Dec 2025US 12,500,619 B2NXP B. V.
- Communication apparatus, communication system, communication method, and non-transitory computer readable medium1 Apr 2025US 12,267,112 B2NEC Corporation
- System and method for fronthaul downlink iq data compression12 Mar 2026US 2026/0074943 A1Quanta Cloud Technology Inc.
- Apparatus and method for positioning using several frequency components for uplink, downlink and sidelink23 Jan 2025US 2025/0030590 A1Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Scrambling for probabilistic constellation schemes in wireless communications5 Dec 2024US 2024/0406052 A1QUALCOMM Incorporated
- Transmission Methods Of Probabilistic Shaping Modulation In Wireless Communications3 Oct 2024US 2024/0333424 A1Mediatek Inc.
- Communication apparatus, communication system, communication method, and non-transitory computer readable medium14 Sep 2023US 2023/0291481 A1NEC Corporation
Most cited
By later US patents
- Data communication system and method therefor203US 6,005,897 A1999
- Pragmatic trellis-coded modulation system and method therefor184US 6,097,764 ASicom, Inc. · 2000
- Phase noise and additive noise estimation in a QAM demodulator172US 6,249,180 B1Atmel Corporation · 2001
- Phase error detecting method and phase tracking loop circuit142US 5,796,786 ASamsung Electronics Co., Ltd. · 1998
- High speed modem suitable for operating with a switched network141US 4,206,320 AUniversity of Illinois Foundation · 1980