摘要
针对现有TD-LTE终端测试仪表因信道编码处理速度慢导致下行达不到理论峰值速率问题,本文在深入研究了3GPP协议中的Rate Matching算法的基础上,提出了一种基于DSP芯片快速实现RM算法的方案,优化下行信道编码,利用地址置换代替数据置换以减小速率匹配的处理延时。通过对比代码优化前后的算法执行时间,表明基于该方案的RM算法具有较小的处理延时。此方案推动了TD-LTE终端测试仪表实现下行理论峰值速率,为加快LTE发展提供了动力。
In connection with the problem that the existing TD-LTE terminal instruments aren＇t able to optimize the downlink peak rate for slow channel coding processing speed, based on the intensive research on RM algorithm of 3GPP protocol, a fast RM implementation scheme with DSP chip is proposed in order to optimize the downlink channel coding .The scheme draws on the address replacement instead of data permutation to reduce the processing delay. Comparing with the original scheme on execution time, this paper proves that the fast scheme has a smaller processing delay. This scheme promotes the TD-LTE terminal test instruments running with downlink peak rate, and provides the impetus to accelerate LTE development.
出处
《电信工程技术与标准化》
2012年第8期72-76,共5页
Telecom Engineering Technics and Standardization
