Interleaving Depth Control for Varying Codeword Blocks
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Solution Overview
Problem
Existing digital communication systems face inefficiencies in interleaving codeword blocks, leading to suboptimal transmission rates and reliability due to fixed interleaving depths that do not account for varying packet lengths and error correction needs.
Innovation Solution
A method and apparatus for controlling interleaving depth by using modulo operations to dynamically adjust interleaving based on the number of codewords and maximum allowable depth, ensuring efficient interleaving and deinterleaving processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed interleaving depth is used, then the interleaving process is simple, but the transmission rate and reliability are suboptimal due to inability to accommodate varying packet lengths
Solution Approach 1:
The patent implements dynamic interleving depth adjustment by modifying the interleving depth parameter based on the number of codewords in the current transmission packet. The interleving depth is no longer fixed but adapts to the actual data size, allowing the system to optimize performance for different packet lengths while maintaining reliable communication.
Solution Approach 2:
The patent changes the interleving depth parameter dynamically according to the number of codewords. By adjusting this key parameter based on actual transmission needs, the system achieves optimal balance between transmission rate and reliability for varying packet sizes without requiring complex additional mechanisms.
2Productivity
If a fixed interleaving depth is used, then the system is simple to operate, but the transmission rate decreases due to inefficient interleaving for varying packet lengths
Solution Approach 1:
The system dynamically adjusts the interleving depth based on the number of codewords, enabling the transmission process to adapt to varying data sizes. This dynamic adjustment optimizes the transmission rate for different packet lengths while maintaining operational simplicity through automated parameter selection.
Solution Approach 2:
The interleving system automatically determines the appropriate interleving depth based on the number of codewords present in each transmission packet. This self-service mechanism eliminates the need for manual configuration or complex external control, allowing the system to optimize its own performance while remaining easy to operate.
3Reliability
If interleaving depth does not account for varying packet lengths, then the interleaving process is straightforward, but packet errors increase
Solution Approach 1:
The patent changes the interleving depth parameter to account for varying packet lengths by calculating the appropriate depth based on the number of codewords. This parameter adaptation ensures that each packet is interleved with the optimal depth, reducing packet errors while keeping the control mechanism relatively simple through mathematical relationships.
4Loss of time
If fixed interleaving depth is applied, then the processing is efficient, but time delays increase due to suboptimal interleaving for different codeword counts
Solution Approach 1:
The system dynamically adjusts the interleving depth to match the actual number of codewords, optimizing the interleving process for each transmission packet. This dynamic adaptation reduces unnecessary processing time and minimizes delays, thereby improving the overall signal transmission speed while maintaining processing efficiency.
Data Source
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AI summary
A method and an apparatus for controlling an interleaving depth are provided. The interleaving depth controlling method includes performing a modulo operation on an interleaving depth selected to be less than or equal to a maximum interleaving depth and a total number of codewords to obtain a number of remaining codewords; and comparing the total number of the codewords to the interleaving depth, when the number of the remaining codewords excludes "0", to control the interleaving depth.