摘要
TD-SCDMA系统通过HSUPA的引入,在上行方向上大幅地提高了数据速率。同以往的WCDMA和CD-MA2000一样,TD-HSUPA反向链路的干扰也将严重影响系统质量,但由于TD-HSUPA在上行方向上的数据信道为共享方式,且干扰控制上不能采用WCDMA中E-RGCH的方式,故对功率控制的有效性和准确性带来了挑战。分析TD-HSUPA的干扰特性,并通过系统级仿真对比几种不同功率授权算法下的系统性能。
The high speed uplink packet access （HSUPA） technology in TD-SCDMA system can supply high data rate on reverse link. Similar with uplink in WCDMA and CDMA2000 system, the interference on reverse link will take great influ- ence on signal quality. Due to the uplink share channel E-PUCH and lack of E-RGCH, the power grant will meet the chal- lenge of gain validity and accuracy. This paper analyzes the features of interference in TD-SCDMA uplink and gives the simulation results on different power grant algorithms.
出处
《数字通信》
2010年第1期54-56,89,共4页
Digital Communications and Networks
