Abstract:-In this paper, a new class of punctured convo lutional codes (PCCs) is presented, in which a PCC is ob tained by punctUling a rate 1/2 periodically time-varying con volutional code (the "mother" code), where different phases within a petiod may have different memory sizes. In the new class, which encompasses all previous PCCs of rate greater than 1/2 ever published, the trellis complexity can be gradu ally increased resulting in a better distance spectrum at each new complexity increment, offering more flexib… Show more
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