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: | + |
顯示於類別: | 會議論文 |