another advantage of tpcs is that the performance of simple row / column interleaving is as good as random interleaving . this allows the use of simpler interleaving structures and hence a saving in terms of system complexity . in tpcs, serial concatenation is more advant-ageous over parallel concatenation and so for all practical purposes tpcs involve iterative siso decoding of serially concatenated block codes separated by a simple row / column interleaver 到目前為止,盡管大多數(shù)的研究都集中在對tcc的研究上,但tpc在許多方面都表現(xiàn)出誘人的應用前景,一方面tpc的編碼效率較tcc高,另外tpc的主要優(yōu)勢在于其采用矩陣交織方式,這使系統(tǒng)結構相對簡單,tpc串行連接的結構也比tcc并行連接的結構有許多優(yōu)勢。