高速下行链路分组系统有效信噪比映射及参数获取方法

Study on Effective SNR Mapping and Parameter Obtain in HSDPA System

为了提高通用移动通信系统(UMTS)下行链路性能,采用高速下行链路分组(HSDPA)接入技术十分必要。研究了非AWGN信道下信噪比(SNR)与误块率(BLER)的映射关系,就相干时间进行数据分段,对多个数据段的信噪比进行映射,提出了参数优化方案。实现了非AWGN到AWGN信道下的SNR有效映射,使它们的BLER一致,具有实际指导意义。

In order to improving the downlink capacity and data rate of UMTS,high speed downlink packet access technology is very necessary. The paper researches on mapping relation between SNR in non-AWGN channel and BLER. An optimization scheme is proposed,according to data segments on coherence time and the SNR mapping of multiple data segments. It is important to achieve non-AWGN to AWGN channel SNR valid mapping and make them the same BLER.