摘要
在信道编码中,由于无线物理信道和传输信道之间存在速率差,故需要对输入数据比特进行打孔操作。传统的打孔操作是通过查询不同的打孔表来进行,并且一种打孔方式需开辟一张表,而开辟多张表格的做法对系统的内存消耗将非常大。通过分析其打孔特点,提出一种新的打孔方法和新的打孔码表,能有效地提高计算效率并减小系统内存消耗。并对其进行了DSP工程实现,对其他模式下的打孔操作具有一定指导意义。
In channel coding, the input data bits need puncture operations because of the rate difference between the wireless physical channels and transport channels. Traditional puncture operations is carried out through querying different puncturing table, and different puncture type needs different puncturing table. In order to store these tables the system needs a large of memory consumption. Through the analysis of the puncture characteristics, a new method of puncture and a new puncturing table which can effectively improve the computational efficiency and reduce memory consumption are pro- posed. And the DSP implementation has a certain guiding significance to other mode＇s puncture operations.
出处
《电视技术》
北大核心
2014年第5期54-57,共4页
Video Engineering
基金
国家新一代宽带无线移动通信网科技重大专项(2012ZX03001-012)
