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A Hardware Architecture for MAP Decoding Based on Nibble Alignment

Authors:
Seungkwon Cho
Sok-Kyu Lee
Youngnam Han

Keywords: 802.16-2009; MAP relevance; nibble alignment; MAP decoding

Abstract:
In IEEE 802.16-2009 standard, a Subscriber Station (SS) has to meet timing constraints imposed by uplink and downlink MAP relevance. Thus, the standard adopts nibble alignment in MAP Information Elements (IEs) in order to support fast MAP decoding. However, some MAP IEs are not nibble-aligned with increased implementation complexity of a MAP decoder. In this paper, we present a hardware architecture designed to efficiently decode MAP message on a nibble basis while suppressing the increase in implementation complexity. The feasibility of the proposed architecture is verified by FPGA synthesis and its performance is presented in terms of MAP decoding time.

Pages: 146 to 150

Copyright: Copyright (c) IARIA, 2011

Publication date: October 23, 2011

Published in: conference

ISSN: 2308-3468

ISBN: 978-1-61208-164-9

Location: Barcelona, Spain

Dates: from October 23, 2011 to October 29, 2011