Wireless Transmitter Bit Parsing for Broadband Decoding Reliability
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Solution Overview
Problem
Existing wireless communication systems face challenges in supporting broadband transmission in wireless local area networks (WLANs) without increasing the complexity and burden of existing structures, particularly when increasing the size of the frequency band.
Innovation Solution
A method of transmitting data blocks in a wireless communication system involves encoding information bits to generate a coded block, parsing it into two subblocks, and transmitting these subblocks to a receiver, allowing for efficient support of wider bandwidths without requiring a larger interleaver size, by using a parsing scheme that distributes bits across multiple frequency subblocks with varying reliability on the signal constellation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the size of the frequency band is increased to support broadband transmission, then the data transmission capacity is improved, but the complexity and burden of the existing interleaver structure increases
Solution Approach 1:
The coded block is divided into two subblocks (first subblock and second subblock) through parsing. Each subblock is then independently interleaved using separate interleavers. This segmentation allows the system to handle wider frequency bands by distributing the interleaving burden across multiple smaller, manageable subblocks rather than using a single large interleaver, thus supporting broadband transmission without proportionally increasing overall system complexity.
2Reliability
If the interleaver size is increased to match the frequency band size, then the frequency diversity gain and coding gain are improved, but the structural complexity and implementation burden increase
Solution Approach 1:
Instead of using a single large interleaver that would require increased structural complexity, the system segments the coded block into multiple subblocks and applies separate interleavers to each subblock. This maintains the necessary interleaving depth for frequency diversity gain while avoiding the need for a single monolithic complex interleaver structure.
Solution Approach 2:
Different interleaving operations are applied to different subblocks (first subblock and second subblock) independently. This allows each local segment to be optimized for its specific requirements, maintaining effective frequency diversity protection without requiring the entire system to accommodate the maximum complexity needed for the full frequency band size.
Data Source
AI summary
Provided are a transmitter and a method for transmitting a data block in a wireless communication system. The method comprises the following steps: encoding an information bit and generating a block coded with an NCBPSS bit; generating two sub-blocks by parsing the coded block; and transmitting the two sub-blocks to the transmitter. By preventing the bits that are contiguous to the encoding block from having continuous identical reliabilities on a signal constellation, the deterioration of the decoding performance of the transmitter can be prevented.