Multicarrier Coding Layout for Impaired Carrier Recovery

The patent divides the coded data into multiple segments and maps them to different carriers. Each carrier transmits a portion of the coded data, and the segmentation allows the system to tolerate carrier impairment. Specifically, the coded data is segmented such that if one carrier fails, the remaining carriers still contain sufficient information to reconstruct the original data through the product code structure.

The patent introduces a multi-dimensional coding structure (product codes) that adds another dimension to the error correction capability. By organizing data in a two-dimensional array and applying separate codes along different dimensions (rows and columns), the system gains the ability to correct errors even when entire carriers (representing one dimension) are impaired, as the other dimension provides redundant correction capability.

The patent segments the error correction task into simpler sub-tasks by dividing the code into product codes that can be decoded independently along different dimensions. This segmentation allows the use of relatively simple component codes (such as convolutional codes or block codes) whose individual decoders are computationally efficient, while the product code structure provides the overall robustness against carrier impairment.

The patent adjusts coding parameters to achieve an optimal balance between reliability and complexity. By selecting appropriate code rates, block lengths, and product code dimensions, the system achieves good error correction performance under carrier impairment while maintaining practical encoder/decoder complexity. The parameters are optimized to provide sufficient redundancy without excessive overhead.

The patent applies error correction coding in advance to the data before transmission, embedding redundancy information that enables immediate error correction at the receiver without requiring retransmission. This preliminary action ensures that even if carriers are impaired, the receiver can correct errors on-the-fly using the pre-encoded redundancy, avoiding the time delay associated with retransmission protocols.

The patent segments the coded data across multiple carriers in a manner that enables parallel processing and reduces overall transmission latency. By distributing coded segments across carriers and using product code structure, the system can recover data from remaining carriers without waiting for retransmission, thus maintaining low latency even under impaired conditions.