作　　者： ; ; ; ;

机构地区： 吉林大学通信工程学院

出　　处： 《吉林大学学报（工学版）》 2010年第1期250-254,共5页

摘　　要： 提出了基于T-Chaotic映射的保奇偶对称交织器算法(TCOP)。通过引入混沌模型,可以提高交织器的可控随机性以及减少保奇偶设计过程中校验序列的相关性;保奇偶对称设计则提高了校验序列的等差保护并简化了系统结构。提出了3种TCOP算法,并与S-Chaotic算法和基于S-Chaotic映射的保奇偶交织器设计(SCOP)在时间延迟和误比特率上进行了比较。在时延方面,帧长范围为512～4096,S-Chaotic的生成时间是TCOP.2的8～676倍,SCOP是TCOP.2的8～118倍;在固定帧长(1024)下,TCOP.2与SCOP性能相近,比S-Chaotic提高了约0.3dB的编码增益。 A symmetrical interleaver algorithm was developed based on the T-Chaotic mapping and the odd-even protection TCOP）. The T-chaotic mapping was introduced to improve the capability of controllable randomicity of the interleaver and reduce the correlation of the check sequence in the design of odd-even protection. The symmetrical design with the odd-even protection improves the equal protection of the check sequence and simplifies the system structure. Three kinds of TCOP algorithm were proposed and they were compared with the S-chaotic algorithm as well as the interleaver algorithm using the S-chaotic mapping and the odd-even protection（SCOP） in terms of the time delay and the bit error rate. When the length of the frame increases from 512 to 4096, the generating time lag of the S-chaotic is 8 to 676 times longer than that of the TCOP. 2, and the SCOP is 8 to 118 times longer than the TCOP. 2. When the length of the frame is fixed at 1024, the performance of the TCOP. 2 is close to the SCOP, while the coding gain of the TCOP. 2 is about 0.3 dB higher than that of the S-chaotic.

关 键 词： 通信技术 码 交织器 混沌映射 保奇偶 对称

领　　域： [电子电信] [电子电信]