H04L 27/2601
Multicarrier modulation systems
Official title: {Multicarrier modulation systems}
H04L27/2601 (Multicarrier modulation systems) appears on 25,084 US grants and 29,169 published applications in this corpus.
Search patents in H04L- Granted patents
- 25,084
- Published applications
- 29,169
- Assignees
- 2,398
- Inventors
- 17,971
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 14 | 0 |
| 1994 | 22 | 0 |
| 1995 | 13 | 0 |
| 1996 | 32 | 0 |
| 1997 | 40 | 0 |
| 1998 | 60 | 0 |
| 1999 | 74 | 0 |
| 2000 | 96 | 0 |
| 2001 | 106 | 79 |
| 2002 | 140 | 274 |
| 2003 | 142 | 320 |
| 2004 | 169 | 474 |
| 2005 | 191 | 600 |
| 2006 | 362 | 734 |
| 2007 | 352 | 937 |
| 2008 | 486 | 1040 |
| 2009 | 530 | 1207 |
| 2010 | 824 | 1105 |
| 2011 | 913 | 1011 |
| 2012 | 1184 | 1049 |
| 2013 | 1267 | 1098 |
| 2014 | 1381 | 1137 |
| 2015 | 1388 | 1334 |
| 2016 | 1286 | 1333 |
| 2017 | 1325 | 1436 |
| 2018 | 1284 | 1457 |
| 2019 | 1516 | 1894 |
| 2020 | 1736 | 1904 |
| 2021 | 1640 | 1753 |
| 2022 | 1468 | 1724 |
| 2023 | 1581 | 1554 |
| 2024 | 1522 | 1359 |
| 2025 | 1281 | 1309 |
| 2026 | 630 | 1047 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cyclic shift diversity-based communication method, apparatus, and system6 Oct 2026US 12,756,431 B2Huawei Technologies Co., Ltd.
- Information transmission method and apparatus, communication node, and storage medium6 Oct 2026US 12,756,442 B2Zte Corporation
- Cancellation pulse generation with reduced waveform storage to reduce crests in transmission signals6 Oct 2026US 12,756,601 B2Texas Instruments Incorporated
- CP-transparent OOK OFDM waveform for an ambient IoT6 Oct 2026US 12,756,604 B2QUALCOMM Incorporated
- Wireless communication method and communications device6 Oct 2026US 12,756,607 B2Quectel Wireless Solutions Co., Ltd.
- Joint communication and sensing8 Oct 2026US 2026/0309836 A1Telefonaktiebolaget LM Ericsson (publ)
- Frequency hopping of reference signal8 Oct 2026US 2026/0312618 A1Nokia Technologies Oy
- Sensing signal transmission method, electronic device, and storage medium8 Oct 2026US 2026/0312743 A1Zte Corporation
- Transmission configuration indication state determination method and apparatus, device, and storage medium8 Oct 2026US 2026/0312752 A1Beijing Xiaomi Mobile Software Co., Ltd.
- Transmitter and method for transmitting data block in wireless communication system8 Oct 2026US 2026/0312754 A1Electronics and Telecommunications Research Institute
Most cited
By later US patents
- Method and apparatus for a RADSL transceiver warm start activation procedure with precoding938US 5,852,630 AGlobespan Semiconductor, Inc. · 1998
- Method and apparatus for adaptive, variable bandwidth, high-speed data transmission of a multicarrier signal over digital subscriber lines879US 5,479,447 AThe Board of Trustees of the Leland Stanford Junior University · 1995
- Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system793US 6,473,467 B1QUALCOMM Incorporated · 2002
- Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum691US 5,282,222 A1994
- Spatio-temporal processing for communication580US 6,144,711 ACisco Systems, Inc. · 2000