Wireless Data Block Transmission Using Frequency Subblocks
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Solution Overview
Problem
Existing wireless communication systems face challenges in supporting broadband transmission in WLANs without increasing the complexity and burden of existing structures, particularly when increasing the size of the frequency band.
Innovation Solution
A method and transmitter that determine the number of bits assigned to a single axis of a signal constellation and use multiple encoders to generate coded blocks, which are then parsed into frequency subblocks for transmission, allowing for efficient broadband support without requiring significant changes to the existing structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the size of the interleaver is increased to support a larger frequency band, 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 patent divides the frequency band into multiple subbands and processes each subband separately through the interleaver. This segmentation allows the system to support larger overall bandwidths while keeping the interleaver size manageable for each individual subband, thus resolving the contradiction between supporting large frequency bands and maintaining acceptable device complexity.
2Productivity
If the size of the frequency band is increased to support broadband transmission, then the data transmission capacity is improved, but the burden on changing existing structure and device complexity increase
Solution Approach 1:
The frequency band is segmented into multiple subbands that can be processed independently. This allows the system to support larger total bandwidths for higher data capacity while maintaining the existing interleaver structure for each subband, thereby increasing productivity without proportionally increasing device complexity.
Solution Approach 2:
The patent introduces a subband dimension to the frequency domain processing. By organizing the frequency band into multiple subbands and applying interleaving operations within each subband, the system effectively adds a dimensional structure that enables broadband support while reusing existing single-band interleaver designs.
3Reliability
If the interleaver size is increased to match the frequency band size, then the coding gain is improved, but the ease of manufacture and implementation become more difficult
Solution Approach 1:
The patent segments the frequency band into multiple subbands and applies the interleaver to each subband separately. This approach maintains the coding gain benefits of interleaving while using smaller, more manageable interleaver instances that are easier to manufacture and implement compared to a single large interleaver covering the entire frequency band.
Data Source
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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: deciding the number of bits (s) and encoders (NES) to allocate to one axis of a signal constellation; encoding an information bit based on the s and the NES and generating a coded block; parsing the coded block based on the s and the NES and generating a plurality of frequency sub-blocks; and transmitting the plurality of frequency sub-blocks to a receiver.