Therefore , it is sure that this kind of codes will be promising in the future mobile communication . compared with traditional codes which are complex with long searching time , structured ldpc codes constructed by gragh rules or combinational algorithms can reduce the complexity and insure the performance , so they are potential in the future wireless communication system with theoretical value 傳統的ldpc碼的構造采用計算機隨機搜索,耗時長,實現復雜,相比之下,利用圖論、組合代數等結構化方法來設計ldpc能有效地降低構造復雜度,并且保證了性能優良,在未來移動通信系統中是一種極有潛力的編碼方式。