论文标题
喷泉代码对GPRS频道的影响
Impact of Fountain Codes on GPRS channels
论文作者
论文摘要
喷泉代码的无重量和信息添加性能使它们在广播/多播应用程序中使用，尤其是在频道特征随时间和带宽变化的无线电环境中。使用ARQ（自动重复请求）和FEC（正向误差校正）组合的常规方案遭受了严重的缺点，例如在发射器处的反馈内爆，需要了解频道特征APRIORI，因此FEC方案的设计旨在有效，并且需要反向通道来要求RETARMANTMESS在FEC失败时需要进行反向通道。本文考虑了通过无线电通道对喷泉代码的评估。在相关的开销方面，通过介绍了GPRS（常规数据包无线电服务）类型的无线电通道的性能。然后，将工作扩展到评估喷泉代码与无线电环境中GPRS频道编码方案结合的性能。
The rateless and information additive properties of fountain codes make them attractive for use in broadcast/multicast applications, especially in radio environments where channel characteristics vary with time and bandwidth is expensive. Conventional schemes using a combination of ARQ (Automatic Repeat reQuest) and FEC (Forward Error Correction) suffer from serious drawbacks such as feedback implosion at the transmitter, the need to know the channel characteristics apriori so that the FEC scheme is designed to be effective and the fact that a reverse channel is needed to request retransmissions if the FEC fails. This paper considers the assessment of fountain codes over radio channels. The performance of fountain codes, in terms of the associated overheads, over radio channels of the type experienced in GPRS (General Packet Radio Service) is presented. The work is then extended to assessing the performance of Fountain codes in combination with the GPRS channel coding schemes in a radio environment.
