基于生成矩阵的LDPC/Turbo码的构造及内外迭代译码新技术

美国相关公司在美国对中国维生素C生产企业提起“价格串通”的美国反托拉斯(反垄断)诉讼。这是中国企业第一次面临美国的反托拉斯诉讼的域外管辖。本文分析的案例报告主要涉及中国企业试图从程序方面即根据“国家强迫行为”理论来申请中止证据调查程序。本文在对该案归纳的基础上,还就本案可能涉及的其他问题,如对美国反托拉斯法的域外适用的抗辩理由;美国反托拉斯法上价格串通构成的要素进行了评析。此外,本案还提醒我国行业协会和企业在应对美国反倾销指控的同时,需防止被指控价格串通而触犯后果更为严厉的美国反托拉斯法。

A New Method for Construction of LDPC/Turbo Codes Based on Generator Matrix and Internal/External Iterative Decoding

A new code with an original parallel organization of Recursive Systematic Convolutional(RSC) and Low-Density Parity-Check(LDPC) code is presented,which is called "L/T" code.A simple and useful decoder adopting a new technique with both internal and external iterative processing is also pvesented.Similar to Turbo codes,the two elementary encoders are linked together by a nonuniform interleaving.Decoder employs iterative processing in which each component decoder takes advantage of the work of the other at the previous step,with the aid of the original concept of extrinsic information.The simulation results are obtained over AWGN channel,and are also compared with those obtained by the traditional approach.