Combined Viterbi Detector for a Balanced Code in Page Memories  

作　　者：ChenDuan-rong XieChang-sheng1 PeiXian-deng 

机构地区：[1]SchoolofComputerScienceandTechnology,HuazhongUniversityofScienceandTechnology,Wuhan430074,Hubei,China [2]SchoolofMathematicsandComputerScience,HubeiUniversity,Wuhan430062,Hubei,China

出　　处：《Wuhan University Journal of Natural Sciences》2004年第1期37-40,共4页武汉大学学报（自然科学英文版）

基　　金：SupportedbyNational973ResearchProgramofChi na (G1 9990 330 0 6)

摘　　要：Based on the two path metrics being equal at a merged node in the trellis employed to describe a Viterbi detector for the detection of data encoded with a rate 6:8 balanced binary code in page-oriented optical memories, the combined Viterbi detector scheme is proposed to improve raw biterror rate performance by mitigating the occurrence of a twobit reversing error event in an estimated codeword for the balanced code. The effectiveness of the detection scheme is verified for different data quantizations using Monte Carlo simulations. Key words holographic data storage - balanced code - modulation code - Viterbi algorithm - path metric CLC number TN 911. 21 Foundation item: Supported by National 973 Research Program of China (G1999033006)Biography: Chen Duan-rong (1960-), male, Lecturer, Ph. D candidate, research direction: coding and signal processing for the recording channel of holographic data storage.Based on the two path metrics being equal at a merged node in the trellis employed to describe a Viterbi detector for the detection of data encoded with a rate 6:8 balanced binary code in page-oriented optical memories, the combined Viterbi detector scheme is proposed to improve raw biterror rate performance by mitigating the occurrence of a twobit reversing error event in an estimated codeword for the balanced code. The effectiveness of the detection scheme is verified for different data quantizations using Monte Carlo simulations. Key words holographic data storage - balanced code - modulation code - Viterbi algorithm - path metric CLC number TN 911. 21 Foundation item: Supported by National 973 Research Program of China (G1999033006)Biography: Chen Duan-rong (1960-), male, Lecturer, Ph. D candidate, research direction: coding and signal processing for the recording channel of holographic data storage.

关 键 词：holographic data storage balanced code modulation code Viterbi algorithm path metric 

分 类 号：TP333.4[自动化与计算机技术—计算机系统结构]