Transmitter apparatus and signal processing method thereof
US-2016380726-A1 · Dec 29, 2016 · US
Method and apparatus for transmitting and receiving FEC frame headers with variable header modulation
US8995533B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8995533-B2 |
| Application number | US-99878009-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 10, 2009 |
| Priority date | Dec 10, 2008 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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A frame header of Forward Error Correction (FEC) is provided, suitable for using in the DVB-C2 Standard. In the DVB-C2 Standard, Adaptive Coding and Modulation (ACM) or Variable Coding and Modulation (VCM) is applied to each FEC block to provide as much flexibility as possible. As a result, a frame header is attached in front of each FEC frame to inform the coding rate, modulation type and physical layer pipe identifier. Besides the signaling of physical layer related information, the FEC frame header has to provide a structure so that it can be easily and reliably detected in the receiver. Motivated by the need in DVB-C2 Standard, an efficient and reliable FEC header suitable for DVB-C2 Standard is provided in at least one implementation in this disclosure that combines use of two different modulation types for the header information. In addition, the detection Method of the FEC header is described.
First claim
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The invention claimed is: 1. A method for encoding (Forward Error Correction) FEC frame header information for data packets, comprising: encoding header bits in the header information, used in a digital cable television transmission, for data packets using Reed-Muller encoding; processing the Reed-Muller coded header bits by performing a cyclic bit shift operation and an exclusive-OR operation with a pseudo-random binary sequence, using a one bit-shifted version of said Reed-Mul…
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Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US8995533B2 cover?
- A frame header of Forward Error Correction (FEC) is provided, suitable for using in the DVB-C2 Standard. In the DVB-C2 Standard, Adaptive Coding and Modulation (ACM) or Variable Coding and Modulation (VCM) is applied to each FEC block to provide as much flexibility as possible. As a result, a frame header is attached in front of each FEC frame to inform the coding rate, modulation type and phys…
- Who is the assignee on this patent?
- Chen Hou-Shin, Gao Wen, Thomson Licensing
- What technology area does this patent fall under?
- Primary CPC classification H03M13/6555. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 31 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).