Revisiting the calculation of effective free distance of turbo codes

نویسنده

  • I. Chatzigeorgiou
چکیده

Introduction: Several authors [1, 2] have agreed that the performance of turbo codes [3] at the error floor region is largely determined by the weight-2 input minimum distance, which corresponds to the minimum Hamming weight among all codeword sequences generated by input sequences of weight two. If a turbo code T consists of N parallel concatenated convolutional codes separated by uniform interleavers, its weight-2 input minimum distance d2 T, which is also referred to as the effective free distance of T, can be written as [4, 5]

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تاریخ انتشار 2007