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 到目前为止,尽管大多数的研究都集中在对tcc的研究上,但tpc在许多方面都表现出诱人的应用前景,一方面tpc的编码效率较tcc高,另外tpc的主要优势在于其采用矩阵交织方式,这使系统结构相对简单,tpc串行连接的结构也比tcc并行连接的结构有许多优势。