Reverse Tracing of Forward State Metric in Log-MAP and MAX-Log-MAP Decoders with Fixed Point Precision(Regurlar Section)
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概要
- 論文の詳細を見る
Serious BER performance degradation due to finite numeric precision in VLSI implementation of Log-MAP and MAX-Log-MAP decoders where forward state metric is calculated using reverse tracing method, is analyzed, and two methods are proposed to overcome this problem, the loser storing method for MAX-Log-MAP and the periodic storing method for Log-MAP and MAX-Log-MAP. Both methods can reduce memory storage size effectively by half, but with additional circuit overhead. Our VLSI implementation examples show that, compared with original method, both methods give about 15% improvement in area and power consumption with identical BER performance.
- 社団法人電子情報通信学会の論文
- 2003-01-01
著者
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Lee Kwyro
Department of Electrical Engineering, Korea Advanced Institute of Science and Technology
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Lee K
Korea Advanced Inst. Sci. And Technol. Kor
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Lee Kwyro
Department Of Eecs Korea Advanced Institute Of Science And Technology
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Lee K
Department Of Electrical Engineering And Computer Science Korea Advanced Institute Of Science And Te
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PARK Sook
Department of Electrical Engineering and Computer Science, Korea Advanced Institute of Science and T
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KWAK Jaeyoung
SAMSUNG Electronics, LSI division
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KWAK Jaeyoung
Department of Electrical Engineering and Computer Science, Korea Advanced Institute of Science and T
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Park S
Department Of Electrical Engineering And Computer Science Korea Advanced Institute Of Science And Te
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Kwak J
Samsung Electronics Lsi Division
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Kwak Jaeyoung
Department Of Electrical Engineering And Computer Science Korea Advanced Institute Of Science And Te
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Park Sook
Department Of Conservative Dentistry School Of Dentistry Kyungpook National University
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Lee Kwyro
Department of EE, Korea Advanced Institute of Science and Technology (KAIST)
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