H04L 1/0668
Orthogonal systems
Official title: {Orthogonal systems, e.g. using Alamouti codes}
H04L1/0668 (Orthogonal systems) appears on 326 US grants and 379 published applications in this corpus.
Search patents in H04L- Granted patents
- 326
- Published applications
- 379
- Assignees
- 133
- Inventors
- 645
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2001 | 1 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 4 |
| 2004 | 2 | 1 |
| 2005 | 0 | 10 |
| 2006 | 5 | 25 |
| 2007 | 2 | 20 |
| 2008 | 8 | 30 |
| 2009 | 8 | 29 |
| 2010 | 18 | 26 |
| 2011 | 34 | 29 |
| 2012 | 28 | 25 |
| 2013 | 37 | 21 |
| 2014 | 26 | 15 |
| 2015 | 26 | 17 |
| 2016 | 21 | 24 |
| 2017 | 21 | 25 |
| 2018 | 22 | 22 |
| 2019 | 17 | 9 |
| 2020 | 18 | 13 |
| 2021 | 9 | 7 |
| 2022 | 9 | 5 |
| 2023 | 5 | 1 |
| 2024 | 3 | 11 |
| 2025 | 2 | 6 |
| 2026 | 3 | 2 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Coding method and apparatus and readable storage medium28 Jul 2026US 12,695,544 B2Vivo Mobile Communication Co., Ltd.
- Encoding method, device, and readable storage medium16 Jun 2026US 12,659,080 B2Vivo Mobile Communication Co., Ltd.
- Alamouti decoder having feedforward phase compensation structure and method of operation thereof10 Feb 2026US 12,549,261 B2Electronics and Telecommunications Research Institute
- Decoding method, device, and readable storage medium9 Dec 2025US 12,494,826 B2Vivo Mobile Communication Co., Ltd.
- Method for mapping physical hybrid automatic repeat request indicator channel29 Jul 2025US 12,375,221 B2Pantech Co., Ltd.
- Communication method and related apparatus5 Mar 2026US 2026/0067033 A1Huawei Technologies Co., Ltd.
- Data Processing Method and Apparatus in Optical Communication8 Jan 2026US 2026/0012290 A1Huawei Technologies Co., Ltd.
- Method for mapping physical hybrid automatic repeat request indicator channel20 Nov 2025US 2025/0358057 A1Pantech Co., Ltd.
- Apparatus and methods for phase tracking in space time block codes25 Sep 2025US 2025/0300783 A1
- Wireless communication system and method28 Aug 2025US 2025/0274166 A1
Most cited
By later US patents
- Transmitter diversity technique for wireless communications240US 6,185,258 B2AT&T Wireless Services, Inc. · 2001
- Bus reversable orthogonal differential vector signaling codes93US 9,432,082 B2Kandou Labs, S.A. · 2016
- Method of switching transmission modes in IEEE 802.11n MIMO communication systems54US 7,620,067 B2Samsung Electronics Co., Ltd. · 2009
- Reception and measurement of MIMO-OFDM signals with a single receiver53US 8,238,463 B1University of South Florida · 2012
- Pilot pattern design for a STTD scheme in an OFDM system49US 7,221,645 B2Sony Deutschland GmbH · 2007