WLAN Coded Block Segmentation 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) due to increased complexity and burden when enlarging the size of the interleaver, which affects decoding performance.
Innovation Solution
A method of transmitting data blocks in WLANs involves encoding information bits to generate a coded block, parsing it into subblocks, and transmitting these subblocks to a receiver, allowing for contiguous or non-contiguous frequency bands, thereby supporting wider bandwidths without increasing the size of the interleaver, ensuring diverse reliability on the signal constellation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the size of the interleaver is increased to support broadband transmission, then the frequency diversity gain and coding gain are improved, but the device complexity and burden on changing existing structure increase
Solution Approach 1:
The coded block is divided into multiple subblocks (first subblock and second subblock) that are then interleaved separately. This segmentation allows the system to achieve frequency diversity gain across the broadband without requiring a single large interleaver, thus reducing device complexity while maintaining reliability
Solution Approach 2:
Instead of increasing the size of the interleaver in one dimension, the patent introduces a new dimension by creating multiple subblocks that can be independently interleaved. This dimensional approach allows broadband support through multiple smaller interleaving operations rather than one large operation
2Reliability
If the size of the interleaver is increased to support broadband transmission, then the coding gain is improved, but the burden on changing existing structure increases
Solution Approach 1:
The coded block is segmented into multiple subblocks that are independently interleaved. This segmentation enables coding gain across the broadband without requiring a monolithic large interleaver structure, thereby reducing the burden on changing existing system structures
Solution Approach 2:
Instead of applying one large interleaving operation across the entire broadband, the patent applies partial interleaving operations on smaller subblocks. This partial action approach achieves the necessary coding gain while minimizing structural changes required
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 from 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.