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Compressed FEC Codes With Spatial-Coupling
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DOI：10.1109/LCOMM.2017.2655055.png)
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An error floor problem is observed for a spatially coupled sparse-regression (SCSR) code with limited sparsity in low-to-medium rates. This letter presents a scheme that also involves spatial-coupling and compressed-sensing (SCCS) similar to SCSR. We replace position modulation in SCSR by a general concatenated forward error control code. We introduce a chaining principle that improves the error floor behavior of the underlying code. We show that SCCS based on chained Hadamard codes can offer significantly improved performance.
Keyword:
Approximate message passing (AMP)
compressed sensing
concatenated codes
Hadamard codes
message passing decoding
sparse-regression (SR) codes
spatial coupling (SC)
turbo codes
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