摘要
EGPRS中采用冗余递增技术,通过空中接口(RF)实现最大效率。通过采用冗余递增技术,只有在收到的数据带有误码时,系统才会发送纠错数据(冗余),从而大大提高了空中接口的效率。本文介绍了冗余递增的工作方式,讨论了怎样使用这种技术调节链路,在必要时改变编码和穿孔格式,以提供最大的数据吞吐量。采用冗余递增技术的无线器件设计人员面临着许多问题,如内存问题,从复杂算法的故障侦测,到器件的正常工作状态等及一般操作。本文阐述了测试冗余递增和无线器件接收机性能可采用的方法。通过这些方法,用户/开发人员可以检查运行情况,准确地查看器件在不同的空中接口条件下的性能、运行状态、数据吞吐量和存储器状态。
Incremental Redundancy is included in EGPRS to achieve maximum efficiency over the air interface （RF）. By using incremental redundancy, error correction data （redundancy） is not sent over the air unless the data is received in error, thus making the air interface very efficient. This article covers the operation of incremental redundancy and discusses how it can be used to adapt the link to provide maximum throughput of data by changing coding and puncture schemes as necessary. Designers of wireless devices that incorporate incremental redundancy are faced with many issues from memory issues and debug of complex algorithms to general operation. This article explains possible methods for testing incremental redundancy and wireless device receiver performance, These methods allow users/developers to verify operation and accurately see how the device performs under differing air interface conditions in terms of general operation, data throughput, and memory organization.
出处
《国外电子测量技术》
2005年第9期4-8,共5页
Foreign Electronic Measurement Technology
