標題: Multi-mode message passing switch networks applied for QC-LDPC decoder
作者: Liu, Chih-Hao
Lin, Chien-Ching
Chang, Hsie-Chia
Lee, Chen-Yi
Hsu, Yarsun
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: LDPC code;decoder architectures;quasi-cyclic;IEEE 802.16e;WiMax;IEEE 802.11n;switch network
公開日期: 2008
摘要: The multi-mode message passing switch networks for multi-standard QC-LDPC decoder are presented. An enhanced self-routing switch network with only one barrel shifter permutation structure and a shifter-based two-way duplicated switch network are proposed to support 19 and 3 different submatrices defined in IEEE 802.16e and IEEE 802.11n. These proposed switch networks can route the decoding message in parallel by different sizes without signal congestion. The enhanced self-routing switch network can switch the messages at different expansion factors with the lowest hardware complexity. Under the condition of a smaller expansion factor, the decoder throughput can be enhanced from the two-way duplicated switch network by increasing the parallelism. In the 130nm CMOS synthesis result, the proposed enhanced self-routing and the two-way duplicated switch network gate counts are 21.9k and 37.4k at 384MHz operation frequency.
URI: http://dx.doi.org/10.1109/ISCAS.2008.4541527
http://hdl.handle.net/11536/135094
ISBN: 978-1-4244-2078-0
ISSN: 0271-4302
DOI: 10.1109/ISCAS.2008.4541527
期刊: PROCEEDINGS OF 2008 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-10
起始頁: 752
結束頁: +
Appears in Collections:Conferences Paper