A High Performance Partially-Parallel Irregular LDPC Decoder Based on Sum-Delta Message Passing Schedule
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概要
- 論文の詳細を見る
In this paper, we propose a partially-parallel irregular LDPC decoder based on IEEE 802.11n standard targeting high throughput and small area applications. The design is based on a novel sum-delta message passing algorithm characterized as follows: (i) Decoding throughput is greatly improved by utilizing the difference value between the updated and the original value to remove redundant computations. (ii) Registers and memory are optimized to store only the frequently used messages to decrease the hardware cost. (iii) Techniques such as binary sorting, parallel column operation, high performance pipelining are used to further speed up the message passing procedure. The synthesis result in TSMC 0.18 CMOS technology demonstrates that for (648, 324) irregular LDPC code, our decoder achieves 7.5X improvement in throughput, which reaches 402Mbps at the frequency of 200MHz, with 11% area reduction. The synthesis result also demonstrates the competitiveness to the fully-parallel regular LDPC decoders in terms of the tradeoff between throughput, area and power.
- （社）電子情報通信学会の論文
- 2008-12-01
著者
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GOTO Satoshi
Graduate School of Information, Production and Systems, Waseda University
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Ikenaga Takeshi
Graduate school of Information, Production and Systems, Waseda University
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Goto Satoshi
Waseda Univ. Jpn
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Ikenaga Takeshi
Waseda Univ.
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Ikenaga Takeshi
Graduate School Of Information Production And System Waseda University
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Ikenaga Takeshi
Graduate School Of Ips Waseda University
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Ikenaga Takeshi
Ips Waseda University
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Ishikawa Tatsuyuki
Graduate School Of Information Production And Systems Waseda University
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IKENAGA Takeshi
The Graduate School of Information, Production and Systems, Waseda University
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Abe Yuta
Graduate School Of Information Production And Systems Waseda University
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Goto Satoshi
Graduate School Of Information Production And System Waseda University
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JI Wen
Graduate School of Information, Production and Systems, Waseda University
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Ji Wen
Graduate School Of Information Production And Systems Waseda University
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IKENAGA Takeshi
Graduate School of Fundamental Science and Engineering, Waseda University
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Goto Satoshi
Graduate School of Infomlation Production and Systems Waseda University
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