Zero-latency zero-error codes for parallel asynchronous channels with arbitrary skews

Transmission across asynchronous communication channels can be subjected to delay injection attacks. Delay injection attacks cause arbitrary skews - arbitrary numbers of transmitted signals can arrive after the first signal of the next transmission has arrived. The (common) assumption that all signals form the ith transmission arrive at the decoder before any signal from the (i + 2)th transmission arrives is called a no switch assumption. This paper presents a self-synchronizing zero-latency coding scheme that requires no acknowledge and can perfectly decode any transmission distorted by an arbitrary skew that obeys the no switch assumption.