H03M 13/3905
Maximum a posteriori probability [map] decoding or approximations thereof based on trellis
Official title: {Maximum a posteriori probability [MAP] decoding or approximations thereof based on trellis or lattice decoding, e.g. forward-backward algorithm, log-MAP decoding, max-log-MAP decoding}
H03M13/3905 (Maximum a posteriori probability [map] decoding or approximations thereof based on trellis) appears on 531 US grants and 526 published applications in this corpus.
Search patents in H03M- Granted patents
- 531
- Published applications
- 526
- Assignees
- 228
- Inventors
- 1,008
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 5 |
| 2002 | 8 | 42 |
| 2003 | 18 | 43 |
| 2004 | 26 | 36 |
| 2005 | 25 | 28 |
| 2006 | 36 | 21 |
| 2007 | 30 | 31 |
| 2008 | 25 | 27 |
| 2009 | 21 | 28 |
| 2010 | 29 | 20 |
| 2011 | 27 | 22 |
| 2012 | 37 | 14 |
| 2013 | 26 | 30 |
| 2014 | 29 | 25 |
| 2015 | 26 | 14 |
| 2016 | 23 | 16 |
| 2017 | 13 | 9 |
| 2018 | 10 | 7 |
| 2019 | 12 | 16 |
| 2020 | 17 | 18 |
| 2021 | 21 | 17 |
| 2022 | 14 | 16 |
| 2023 | 14 | 8 |
| 2024 | 11 | 7 |
| 2025 | 4 | 14 |
| 2026 | 11 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03M 13/3927Log-likelihood ratio [llr] computation by combination of forward and backward metrics into161
- H03M 13/3922Add-compare-select [acs] operation in forward or backward recursions73
- H03M 13/3911Correction factor50
- H03M 13/3938Tail-biting28
- H03M 13/3916For block codes using a trellis or lattice25
- H03M 13/3933Decoding in probability domain25
Recent patents
- Apparatus for transmitting and receiving signal29 Sep 2026US 12,750,161 B2Samsung Electronics Co., Ltd.
- Data compression and channel coding techniques for variable length payloads29 Sep 2026US 12,750,729 B2QUALCOMM Incorporated
- Receiver for adjusting log likelihood ratio and method of operating the same8 Sep 2026US 12,732,212 B2Samsung Electronics Co., Ltd.
- Error detection in wireless communications using sectional redundancy check information16 Jun 2026US 12,659,073 B2QUALCOMM Incorporated
- Methods and apparatus for discontinuous transmission (DTX) detection26 May 2026US 12,640,757 B1Marvell Asia Pte Ltd
- Efficient dual sphere soft demapping for multi antenna communication systems1 Oct 2026US 2026/0303122 A1Avago Technologies International Sales Pte. Limited
- Hard error correction based on selective error counts in low-density parity check codes in memory devices23 Jul 2026US 2026/0213773 A1
- Decoding based on data reliability18 Jun 2026US 2026/0172055 A1QUALCOMM Incorporated
- Priori bit pattern indexed error counts for accelerated link equalization training11 Jun 2026US 2026/0163674 A1NVIDIA Corporation
- System and method for physical broadcast channel (pbch) scrambling and soft combining11 Jun 2026US 2026/0164380 A1QUALCOMM Incorporated
Most cited
By later US patents
- Soft decision output decoder for decoding convolutionally encoded codewords205US 5,933,462 AQUALCOMM Incorporated · 1999
- Parallel concatenated tail-biting convolutional code and decoder therefor189US 5,721,745 AGeneral Electric Company · 1998
- Turbo decoder control for use with a programmable interleaver, variable block length, and multiple code rates180US 6,516,437 B1General Electric Company · 2003
- Data storage device employing high quality metrics when decoding logical block address appended to a data sector138US 8,413,010 B1Western Digital Technologies, Inc. · 2013
- Turbo decoder with decision feedback equalization109US 6,307,901 B1Motorola, Inc. · 2001