Architectural Considerations for Rate-flexible Trellis Processing Blocks
Konferenz: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
11.09.2005 - 14.09.2005 in Berlin, Germany
Tagungsband: PIMRC 2005
Seiten: 5Sprache: EnglischTyp: PDF
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Autoren:
Kamuf, Matthias; Öwall, Viktor (Department of Electroscience, Lund University, 221 00 Lund, Sweden)
Anderson, John B. (Department of Information Technology. Lund University, 221 00 Lund, Sweden)
Inhalt:
A flexible channel decoding platform should be able to operate in varying communication scenarios, and different code rates have to be supported. Therefore, we present a framework that allows efficient processing of rate-flexible trellises. Using a fundamental computational unit for trellis-based decoding, formal principles are obtained to emulate more complex trellises. In a design example, such a computational block supports both rate 1/c convolutional codes and set partition codes with subset selectors of rate 2/3. Synthesis results show the hardware requirements for two different architectural approaches.