摘要
提出一种DTMB系统的频域交织方法,利用了插入位置集合的固有特性,使用正则有符号数CSD运算降低了运算量。实验表明,该频域交织器设计合理,可有效降低逻辑资源,最重要的是省去了传统查表法的存储器消耗。
This article proposed a direct frequency interleaving method in DTMB system and utilized the inherent characteristic of the set of inserted positions.This method effectively reduces the computational complexity by using canonical signed digit(CSD) operation.Experimental results show that this frequency interleaver is well designed and the hardware logic cells can be greatly decreased.Most of all,the design requires no longer memory consumption which is evitable in the conventional lookup table method.
出处
《中国有线电视》
2010年第8期940-942,共3页
China Digital Cable TV
关键词
频域交织
DTMB
正则有符号数
frequency interleaving
DTMB
canonical signed digit