LDPC Block Encoding for L1 Signaling in Wireless Systems
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Solution Overview
Problem
Existing wireless communication systems face challenges in minimizing transmission errors of control information, particularly in encoding L1 signaling information, which affects the stability of wireless broadcast services.
Innovation Solution
A method and apparatus for encoding L1 post-signaling information into multiple LDPC blocks, ensuring each block has an equal number of bits by adding padding bits, to maintain consistent decoding performance and improve encoding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If L1 signaling information is encoded into multiple LDPC blocks, then transmission errors are reduced and reliability is improved, but device complexity increases due to the need for block division and padding bit management
Solution Approach 1:
The L1 signaling information is divided into multiple LDPC blocks for encoding. Each block is processed independently through the LDPC encoding process, which improves transmission reliability by distributing the information across multiple encoded blocks that can be individually decoded and error-corrected.
Solution Approach 2:
Padding bits are added to each LDPC block before encoding to ensure that each block has an equal number of bits. This preliminary action maintains consistent decoding performance across all blocks and simplifies the overall decoding process at the receiver side.
2Manufacturing precision
If padding bits are added to make each LDPC block have an equal number of bits, then decoding performance consistency is improved, but loss of information increases due to additional overhead
Solution Approach 1:
Padding bits are selectively added to specific LDPC blocks that require them to achieve uniform block sizes. This local adjustment ensures that each block has the appropriate number of bits for consistent decoding performance while minimizing the total number of padding bits across all blocks.
Data Source
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AI summary
A method for receiving control information through a preamble comprising Layer 1 (L1) part II signaling information in a communication system, the method comprising the steps of: acquiring information on a number of bits of Layer 1 (L1) part II signaling information from a received frame; calculating a number of LDPC blocks into which the L1 part II signaling information is divided; calculating a number of input information bits of each LDPC block when there are a plurality of LDPC blocks, such that the multiple LDPC blocks are equal in the number of input information bits, and calculating a number of puncturing bits among parity bits of each LDPC block; and decoding one or more received LDPC blocks based on the information acquired and calculated in the preceding steps.