Abstract
Low density parity-check (LDPC) code is, currently, one kind of sparse parity-check matrix based linear block error-correcting codes which could highly approach the Shannon limit with iterative decoding. LDPC codes’ superior performance, which may surpass Turbo code, makes it suitable for transmitting large amount of data in multimedia broadcasting system. CMMB is the first multimedia broadcasting system in China that is targeted at handheld devices with small screens, such as mobile phones and PDA. For its superior performance, CMMB uses LDPC as its channel coding. Moreover, CMMB adopts OFDM as its means of transmission, which make it more resistant to interference. This paper first introduces the encoding of LDPC based on LU decomposition, and then derives the transform process of LU decomposition algorithm of sparse matrix. Finally, based on the decomposition results of sparse matrix for the LDPC code used in CMMB, it is verified that the mincolproduct algorithm has achieved its expected goal.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
