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一种基于LCC算法的新型RS码译码器 被引量:2
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作者 张为 潘博阳 王皓 《北京理工大学学报》 EI CAS CSCD 北大核心 2013年第3期276-279,共4页
相比于传统的硬判决译码算法,RS码软判决译码算法能够获得更大的编码增益,但硬件实现较为复杂.针对这一问题,本文在LCC软判决译码算法的基础上提出了一种改进型校验子算法,可在不影响译码性能的前提下大幅降低硬件复杂度.仿真结果表明,... 相比于传统的硬判决译码算法,RS码软判决译码算法能够获得更大的编码增益,但硬件实现较为复杂.针对这一问题,本文在LCC软判决译码算法的基础上提出了一种改进型校验子算法,可在不影响译码性能的前提下大幅降低硬件复杂度.仿真结果表明,本文设计的RS(255,239)码η=3译码器,在BPSK调制下通过AWGN信道,相比于现有基于校验子的RS码译码器结构,硬件资源消耗减少20%.采用SMIC 0.18μm CMOS工艺实现,芯片面积仅为0.81mm2. 展开更多
关键词 Reed—Solomon(RS)码 LCC译码算法 校验子计算
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Microscopic Calculations of Core-Polarization Effect on Inelastic Electron Scattering Form Factors for Different Parity States in (14^)
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作者 Nadia Mohammad Adeeb 《Journal of Physical Science and Application》 2012年第9期392-397,共6页
Inelastic electron scattering form factors has been calculated for different parity for the two (C3) transitions of 14^N for (5.83MeV) (f^π, T = 20) level and, (5.106MeV) (f^π, T = 30) level in the frame w... Inelastic electron scattering form factors has been calculated for different parity for the two (C3) transitions of 14^N for (5.83MeV) (f^π, T = 20) level and, (5.106MeV) (f^π, T = 30) level in the frame work of shell model. The model space wave functions are generated by using the Cohen-Kurath (CK) interaction, where 4He is assumed as a core and ten nucleons are distributed over the lp-shell which forms the model space. Core-polarization effects (CP) (the effects from outside lp-shell model space) are included through the first order perturbation theory. The core-polarization effects increase the form factor to be up near the experimental data which are not sufficient to give a good comparison with the calculating data. 展开更多
关键词 Nuclear reactions Inelastic form factors (e e') p-shell nuclei different parity states calculated first-ordercore-polarization effects.
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