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F. Huemer, A. Steininger:
"Partially Systematic Constant-Weight Codes for Delay-Insensitive Communication";
in: "2018 24th IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC)", herausgegeben von: IEEE CS Press; IEEE Xplore Digital Library, 2018, ISBN: 978-1-5386-5883-3, S. 17 - 25.

The increasing complexity and modularity of contemporary systems makes
the availability of flexible and robust, yet efficient, module-level interconnect instrumental. Delay-insensitive codes are very attractive in this context. In this paper we explore the idea of composing hybrid coding schemes that combine the benefits of constant-weight codes, namely simple completion detection, with those of systematic codes, namely zero-effort decoding. Apart from showing how to systematically construct efficient hybrid codes, we elaborate in great detail on the cost-efficient and orphan-free implementation of completion detectors, as well as that of suitable encoders and decoders. A comparison of various concrete solutions in terms of coding efficiency as well as hardware overhead gives evidence for the benefits of our proposed approach, and at the same time serves as a repository for ready-made optimized solutions.

delay insensitive codes, completion detection, m-of-n codes, constantweight codes, Berger codes, sorting networks, coding efficiency, GALS

http://dx.doi.org/10.1109/ASYNC.2018.00014

Projektleitung Andreas Steininger:
ENROL