H04L 25/03006
Arrangements for removing intersymbol interference
Official title: {Arrangements for removing intersymbol interference}
H04L25/03006 (Arrangements for removing intersymbol interference) appears on 11,285 US grants and 10,263 published applications in this corpus.
Search patents in H04L- Granted patents
- 11,285
- Published applications
- 10,263
- Assignees
- 1,818
- Inventors
- 13,308
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 19 | 0 |
| 1978 | 5 | 0 |
| 1979 | 7 | 0 |
| 1980 | 9 | 0 |
| 1981 | 16 | 0 |
| 1982 | 10 | 0 |
| 1983 | 14 | 0 |
| 1984 | 18 | 0 |
| 1985 | 14 | 0 |
| 1986 | 20 | 0 |
| 1987 | 13 | 0 |
| 1988 | 15 | 0 |
| 1989 | 28 | 0 |
| 1990 | 14 | 0 |
| 1991 | 35 | 0 |
| 1992 | 47 | 0 |
| 1993 | 54 | 0 |
| 1994 | 55 | 0 |
| 1995 | 57 | 0 |
| 1996 | 73 | 0 |
| 1997 | 78 | 0 |
| 1998 | 102 | 0 |
| 1999 | 116 | 0 |
| 2000 | 101 | 0 |
| 2001 | 153 | 68 |
| 2002 | 142 | 230 |
| 2003 | 151 | 292 |
| 2004 | 191 | 384 |
| 2005 | 195 | 408 |
| 2006 | 338 | 413 |
| 2007 | 325 | 499 |
| 2008 | 339 | 542 |
| 2009 | 380 | 595 |
| 2010 | 516 | 640 |
| 2011 | 483 | 573 |
| 2012 | 697 | 577 |
| 2013 | 775 | 501 |
| 2014 | 838 | 504 |
| 2015 | 744 | 483 |
| 2016 | 548 | 424 |
| 2017 | 519 | 458 |
| 2018 | 494 | 387 |
| 2019 | 501 | 401 |
| 2020 | 451 | 350 |
| 2021 | 356 | 327 |
| 2022 | 306 | 309 |
| 2023 | 281 | 284 |
| 2024 | 267 | 245 |
| 2025 | 221 | 230 |
| 2026 | 142 | 139 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04L 25/03012Operating in the time domain4,779
- H04L 2025/0335Characterised by the type of transmissionIndexing code3,452
- H04L 25/03343Arrangements at the transmitter end2,540
- H04L 25/03178Arrangements involving sequence estimation techniques2,400
- H04L 2025/03433Characterised by equaliser structureIndexing code1,784
- H04L 2025/03592Adaptation methodsIndexing code1,549
- H04L 25/03159Operating in the frequency domain1,117
- H04L 2025/03777Characterised by the signallingIndexing code947
Recent patents
- Data correction and phase optimization in high-speed receivers6 Oct 2026US 12,754,237 B2Diodes Incorporated
- Digital predistortion with hybrid basis-function-based actuator and neural network6 Oct 2026US 12,756,599 B2Analog Devices, Inc.
- Transmitter equalization parameter evaluation method and apparatus6 Oct 2026US 12,756,600 B2Huawei Technologies Co., Ltd.
- Cancellation pulse generation with reduced waveform storage to reduce crests in transmission signals6 Oct 2026US 12,756,601 B2Texas Instruments Incorporated
- Wireless communication method for time-frequency domain synchronization, terminal device, and network device6 Oct 2026US 12,757,142 B2Guangdong Oppo Mobile Telecommunications Corp., Ltd.
- Mimo equalizer circuit, communication unit and method for successive interference cancellation1 Oct 2026US 2026/0303194 A1Accelercomm Limited
- Signal receiving device1 Oct 2026US 2026/0303318 A1ITE Tech. Inc.
- Equalizer circuit and calibration method therefor1 Oct 2026US 2026/0303416 A1Novatek Microelectronics Corp.
- Feedforward equalizer noise suppression1 Oct 2026US 2026/0303417 A1MaxLinear, Inc.
- Digital multi-band predistortion linearizer with subsampling feedback24 Sep 2026US 2026/0291532 A1Smart RF Inc.
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 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
- Lower overhead method for data transmission using ATM and SCDMA over hybrid fiber coax cable plant683US 5,991,308 ATerayon Communication Systems, Inc. · 1999
- Spatio-temporal processing for communication580US 6,144,711 ACisco Systems, Inc. · 2000