High Performance Multiple Description Code Design

高性能多重描述代码设计

• 批准号: 327286-2013
• 负责人: Dumitrescu, Sorina
• 金额: $ 2.55万
• 依托单位: McMaster University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=595219
• 关键词: Performance; Multiple; Description; Code; Design

In the multiple description (MD) problem, the goal is to generate a given number, say K, of bitstreams (i.e., descriptions) representing a signal, such that each bitstream can be decoded to an acceptable quality, while more bitstreams refine each other improving the signal reconstruction. MD coding finds applications in transmission of multimedia signals over packet lossy (wired or wireless) networks as it ensures graceful recovery from losses when retransmission is not an option due to stringent delay constraints. Other applications are in diversity communications systems, distributed data storage and multirate multicast.

在多描述（MD）问题中，目标是生成给定数量（比如K）的比特流（即，描述），使得每个比特流可以被解码到可接受的质量，同时更多的比特流彼此细化，从而改善信号重构。MD编码在分组有损（有线或无线）网络上的多媒体信号传输中找到应用，因为当由于严格的延迟约束而不能选择重传时，MD编码确保从丢失中优雅地恢复。其他应用是在分集通信系统，分布式数据存储和多速率组播。