Finite-Blocklength Lossy Joint Source-Channel Coding
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Finite-Blocklength Lossy Joint Source-Channel Coding over Unknown Channels
arXiv:2606.07933v1 Announce Type: new Abstract: We analyze the finite-blocklength performance of lossy joint source-channel codes (JSCC) in an unknown-channel framework, where the true channel is unknown but the source distribution is known. We establish achievability results for mismatched-design JSCC, where the code design is based on a channel $Q_{Y|X}$ but deployed over a different channel $P_{Y|X}$. Our mismatched-design achievability result allows nonstationary channel laws and...