FGS比特流的差错复原性能  

Error Resilience Performance of FGS Bit Streams

作　　者：张婵[1] 梁凡[2] 肖自美[2] 肖明明[3] 

机构地区：[1]解放军体育学院,广东广州510502 [2]中山大学,广东广州510275 [3]仲恺农业技术学院,广东广州510225

出　　处：《解放军理工大学学报（自然科学版）》2003年第6期29-32,共4页Journal of PLA University of Science and Technology(Natural Science Edition)

摘　　要：基于IP的视频通信不可避免地要面临信道差错的影响,如比特误码和分组丢失。可分级编码是解决这些问题的重要方法之一。FGS(FineGranularityScalability)是一种全新的可分级编码方法,它能提供非常精细的可分级编码能力。研究了FGS比特流在IP网络上的传输特性,并为FGS比特流引入了一种差错还原打包方案。仿真结果表明,该打包方案可以明显地改善FGS比特流的差错还原能力。IP-based video communication suffers from channel errors, such as bit errors and packets loss. Scalable coding is one of the important methods to resolve these problems. FGS is a kind of new scalable coding method, which can provide very fine scalability. In this paper, the transmission performance of FGS bit streams over IP networks is researched and a error resilient packing scheme for FGS bit streams is introduced. Simulation results show that this packing scheme can improve the error resilience capability of the FGS bit streams significantly.

关 键 词：精细可分级编码 IP视频传输 差错复原 

分 类 号：TN919.81[电子电信—通信与信息系统]