H04L 27/2278
Using correlation techniques
Official title: {using correlation techniques, e.g. for spread spectrum signals}
H04L27/2278 (Using correlation techniques) appears on 186 US grants and 128 published applications in this corpus.
Search patents in H04L- Granted patents
- 186
- Published applications
- 128
- Assignees
- 92
- Inventors
- 268
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 7 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 1 |
| 2003 | 2 | 2 |
| 2004 | 2 | 6 |
| 2005 | 2 | 2 |
| 2006 | 1 | 2 |
| 2007 | 4 | 3 |
| 2008 | 3 | 2 |
| 2009 | 1 | 4 |
| 2010 | 2 | 0 |
| 2011 | 4 | 4 |
| 2012 | 4 | 3 |
| 2013 | 18 | 4 |
| 2014 | 15 | 18 |
| 2015 | 12 | 15 |
| 2016 | 12 | 12 |
| 2017 | 13 | 8 |
| 2018 | 10 | 10 |
| 2019 | 12 | 8 |
| 2020 | 8 | 4 |
| 2021 | 7 | 7 |
| 2022 | 1 | 1 |
| 2023 | 3 | 4 |
| 2024 | 4 | 4 |
| 2025 | 4 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Joint index modulation and multiple input multiple output (MIMO) sensing in joint communication and sensing (JCS) systems17 Mar 2026US 12,580,803 B2QUALCOMM Incorporated
- Radio frequency (RF) communications system having RF nodes that determine a despreading sequence and phase and timing offsets for frequency agility23 Dec 2025US 12,506,649 B2L3Harris Technologies, Inc.
- Communication unit for soft-decision demodulation and method therefor4 Nov 2025US 12,463,850 B2Accelercomm Limited
- Systems and methods for improved range and performance for low power radios8 Jul 2025US 12,356,315 B2Apple Inc.
- Communication unit for soft-decision demodulation and method therefor4 Mar 2025US 12,244,441 B2Accelercomm Limited
- Radio frequency (rf) communications system having rf nodes that determine a despreading sequence and phase and timing offsets for frequency agility5 Mar 2026US 2026/0067139 A1L3Harris Technologies, Inc.
- Joint index modulation and multiple input multiple output (mimo) sensing in joint communication and sensing (jcs) systems25 Sep 2025US 2025/0300874 A1QUALCOMM Incorporated
- Reduction of time-domain correlation for secure sounding signal22 May 2025US 2025/0168627 A1Intel Corporation
- Radio frequency (rf) communications system having rf nodes that determine a despreading sequence and phase and timing offsets for frequency agility26 Sep 2024US 2024/0323067 A1L3Harris Technologies, Inc.
- Radio frequency (rf) communications system having rf nodes that determine a despreading sequence and phase and timing offsets for frequency agility11 Jul 2024US 2024/0235908 A1L3Harris Technologies, Inc.
Most cited
By later US patents
- Apparatus for providing communication services and methods thereof469US 9,520,945 B2AT&T Intellectual Property I, L. P. · 2016
- System and method for multiplexing a spread spectrum communication system202US 5,825,807 A1998
- Adaptive transmission and interference cancellation for MIMO radar185US 9,689,967 B1Uhnder, Inc. · 2017
- Asynchronous digital correlator and demodulators including a correlator of this type142US 4,933,952 ALMT Radioprofessionnelle · 1990
- Compensating for distortion in a communication channel99US 4,922,506 ASicom, Inc. · 1990