ITW 2026, IEEE Information Theory Workshop, 10-13 November 2026, Tempe, USA
We consider the problem of textit{rate loss}---a strict penalty in achievable rates caused by the lack of channel state information at the receiver (Rx) of a classical-quantum (CQ) channel. First, we identify noncommutative CQ channels and analytically prove a rate loss. Building on this, we next prove that coset-code-based strategies can strictly outperform conventional unstructured IID-code-based strategies for noncommutative 3-user CQ broadcast channels.
Type:
Rapport
City:
Tempe
Date:
2026-11-10
Department:
Data Science
Eurecom Ref:
8816
Copyright:
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