H04L 27/26526
With inverse fft [ifft] or inverse dft [idft] demodulators
Official title: {with inverse FFT [IFFT] or inverse DFT [IDFT] demodulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] receiver or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]}
H04L27/26526 (With inverse fft [ifft] or inverse dft [idft] demodulators) appears on 282 US grants and 325 published applications in this corpus.
Search patents in H04L- Granted patents
- 282
- Published applications
- 325
- Assignees
- 131
- Inventors
- 604
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 3 |
| 2005 | 0 | 5 |
| 2006 | 0 | 8 |
| 2007 | 2 | 2 |
| 2008 | 2 | 7 |
| 2009 | 2 | 8 |
| 2010 | 5 | 10 |
| 2011 | 5 | 16 |
| 2012 | 13 | 9 |
| 2013 | 16 | 13 |
| 2014 | 15 | 12 |
| 2015 | 20 | 22 |
| 2016 | 16 | 21 |
| 2017 | 27 | 28 |
| 2018 | 18 | 23 |
| 2019 | 24 | 17 |
| 2020 | 20 | 18 |
| 2021 | 17 | 8 |
| 2022 | 16 | 18 |
| 2023 | 13 | 16 |
| 2024 | 15 | 21 |
| 2025 | 19 | 18 |
| 2026 | 13 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Frequency deviation compensation scheme and frequency deviation compensation method15 Sep 2026US 12,739,036 B2NEC Corporation
- Signal processing apparatus, optical transmitting apparatus, optical receiving apparatus, optical transmission system, and signal processing method25 Aug 2026US 12,719,583 B2NEC Corporation
- Reference signals for phase jump boundaries16 Jun 2026US 12,659,210 B2QUALCOMM Incorporated
- Terminal device, base station apparatus, and communication method26 May 2026US 12,641,615 B2Sony Group Corporation
- Method and apparatus for determining phase tracking reference signal pattern19 May 2026US 12,634,074 B2Huawei Technologies Co., Ltd.
- Transmitter and transmission method20 Aug 2026US 2026/0247350 A1Ntt Docomo, Inc.
- Method and a system for transmitting dft-s-ofdm symbols30 Jul 2026US 2026/0222099 A1Wisig Networks Private Limited
- Data-aided discrete fourier transform-spread-orthogonal frequency division multiplexing communications16 Jul 2026US 2026/0205343 A1Samsung Electronics Co., Ltd.
- Signal processing method, transmit-end device, and receive-end device2 Jul 2026US 2026/0189448 A1Quectel Wireless Solutions Co., Ltd.
- Signal receiving method and apparatus25 Jun 2026US 2026/0180566 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Bit interleaving for orthogonal frequency division multiplexing in the transmission of digital signals133US 6,717,908 B2QUALCOMM Incorporated · 2004
- Cooperative beam-forming in wireless networks117US 8,670,390 B2Genghiscomm Holdings, LLC · 2014
- Pre-coding in multi-user MIMO90US 9,485,063 B2Genghiscomm Holdings, LLC · 2016
- Bit interleaving for orthogonal frequency division multiplexing in the transmission of digital signals81US 6,151,296 AQUALCOMM Incorporated · 2000
- Broadband wireless communications systems and methods using multiple non-contiguous frequency bands/segments66US 7,454,175 B2ATC Technologies, LLC · 2008