Check patentability & draft patents in minutes with Patsnap Eureka AI!
A method for transmitting additional information by using linear block codes
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A linear block code, extra information technology, applied in the field of using linear block code to transmit extra information
Active Publication Date: 2019-10-08
SUN YAT SEN UNIV
View PDF8 Cites 7 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0003] The main purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, to provide a method for transmitting additional information using linear block codes, and to embed shorter additional information into basic linear packets without additional consumption of energy and bandwidth transfer in code
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0054] like figure 1 As shown, the method for transmitting additional information using linear block codes in this embodiment is characterized in that it includes the following steps:
[0055] (1) Based on the linear block code C with a code length of n and an information bit length of k as a payload code, it is used to convert an additional information sequence with a length of m v =(v 0 ,v 1 ,...,v m-1 ) is superimposed and coded as a codeword of length n c =(c 0 ,c 1 ,...,c n-1 ), the encoding method is as follows:
[0056] (1.1) First, the basic load information sequence of length k u linear block code word w =(w 0 ,w 1 ,...,w n-1 )=C( u );
[0057] (1.2) The additional information sequence of length m v Input a sequence selector R and output a sequence of length n s =(s 0 ,s 1 ,...,s n-1 ) = R( v );
[0058] (1.3) will sequence s codeword with linear block code w Superposition coding to obtain the transmission codeword c ;
[0059] (2) Decoding th...
Embodiment 2
[0082] In this embodiment 2, except for the following technical features, other technical solutions are the same as in embodiment 1, that is, in this embodiment 2, soft decision is adopted, specifically:
[0083] feature measure function f C Including the following calculation methods:
[0084] Receive sequence from y Calculate the log-likelihood ratio (LLR) sequence z , via z remove sequence s (i) interference to get the sequence recalculate On the Likelihood Function η of Linear Block Codes (i) , and finally η (i) as a function f C Output.
[0085] the sequence z Expressed as z=(z 0 ,z 1 ,L,z n-1 ), z The components in are calculated as follows:
[0086]
[0087] from sequence z remove sequence s (i) interference to get the sequence Refers to The components in are calculated as follows:
[0088]
[0089] The likelihood function n of the linear block code (i) The calculation of includes the following methods:
[0090]
[0091] Among them,...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
The invention discloses a method for transmitting additional information by using linear block codes, which comprises the following steps of: during encoding, superposing and encoding an additional information sequence v with the length of m into a code word c with the length of n by using a linear block code C with the code length of n and the information bit length of k as a load code; during decoding, firstly, decoding additional information according to a receiving sequence y: selecting an additional information sequence with the maximum characteristic metric function value as decoding output; and then carrying out basic load information sequence decoding: removing interference of superposition coding from the receiving sequence y, and then using a decoder of a basic linear block codeC to perform decoding. According to the method, a small amount of additional information can be transmitted at a low frame error rate while only the basic load information decoding is subjected to negligible influence under the condition that the transmission energy and bandwidth costs are not increased additionally.
Description
technical field [0001] The invention belongs to the field of digital communication and digital storage, in particular to a method for transmitting additional information by using linear block codes. Background technique [0002] In order to efficiently schedule and transmit data, in a communication system, in addition to transmitting data information, control information must also be transmitted. For the transmission of data information, it is required to approach the channel capacity, mainly requiring high speed. Control information includes line signaling information, routing information, etc., and is usually short, but requires high reliability. In order to ensure high reliability of the control message, the existing scheme uses a coding scheme with a low code rate to independently transmit the control information. Therefore, additional energy and bandwidth overhead are required to transmit this information. Existing research mainly focuses on the ACK / NACK information ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More