H04B 7/208
Frequency-division multiple access [fdma]
Official title: Frequency-division multiple access {[FDMA]}
H04B7/208 (Frequency-division multiple access [fdma]) appears on 82 US grants and 42 published applications in this corpus.
Search patents in H04B- Granted patents
- 82
- Published applications
- 42
- Assignees
- 61
- Inventors
- 155
- Latest grant
- 10 Sep 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 6 | 0 |
| 1996 | 2 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 2 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 1 | 0 |
| 2009 | 2 | 3 |
| 2010 | 0 | 0 |
| 2011 | 3 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 2 |
| 2014 | 0 | 0 |
| 2015 | 1 | 2 |
| 2016 | 2 | 5 |
| 2017 | 4 | 4 |
| 2018 | 2 | 5 |
| 2019 | 6 | 5 |
| 2020 | 5 | 0 |
| 2021 | 3 | 4 |
| 2022 | 1 | 2 |
| 2023 | 3 | 2 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Apparatus for doppler shift compensation, corresponding method and computer program10 Sep 2024US 12,088,400 B2Nokia Technologies Oy
- Satellite transmitter and relay satellite communication system19 Sep 2023US 11,764,868 B2Mitsubishi Electric Corporation
- Radio communication system, radio communication method, and base station device20 Jun 2023US 11,683,089 B2Nippon Telegraph and Telephone Corporation
- Device and method for inserting quadruplet and device and method for extracting quadruplet16 May 2023US 11,652,542 B2Mitsubishi Electric Corporation
- Data transmission in synchronization slots29 Mar 2022US 11,290,145 B2QUALCOMM Incorporated
- Communication system17 Jul 2025US 2025/0233653 A1Mitsubishi Electric Corporation
- Systems and methods of wireless communication using artificial intelligence to overcome skip zones20 Apr 2023US 2023/0118922 A1GBT Technologies, Inc.
- Systems and methods of wireless communication using artificial intelligence to overcome skip zones20 Apr 2023US 2023/0124037 A1GBT Technologies, Inc.
- Apparatus for doppler shift compensation, corresponding method and computer program2 Jun 2022US 2022/0173799 A1Nokia Technologies Oy
- Satellite transmitter and relay satellite communication system17 Mar 2022US 2022/0085875 A1Mitsubishi Electric Corporation
Most cited
By later US patents
- Method and apparatus for operating with a hopping control channel in a communication system165US 5,506,863 AMotorola, Inc. · 1996
- Method and apparatus for providing energy dispersal using frequency diversity in a satellite communications system129US 5,454,009 AScientific-Atlanta, Inc. · 1995
- Frequency assignment system in FDMA communication system123US 4,783,779 AKokusai Denshin Denwa Kabushiki Kaisha · 1988
- Trellis coded multilevel DPSK system with doppler correction for mobile satellite channels110US 5,023,889 ACalifornia Institute of Technology · 1991
- Compensation of frequency offset100US 5,613,193 AKokusai Denshin Denwa Kabushiki Kaisha · 1997