A Effective S1NR Link to System Mapping Method for CQI Feedback in TD-LTE System
This paper gives an overview of the so-called link performance model used in TD-LTE (Time Division-Long Term Evolution) system level simulations to determine the link CQI (channel quality Indicator) at reduced complexity of UE (User Equipment). Mainly, effective SINK methods including EESM and MIESM account for the instantaneous channel realization and other configurations and utilize the post processing SINR to compute the effective SNR (Signal to Noise Ratio). Then UE reports CQi values, depending on a linear mapping function from effective SNR to a corresponding CQI value. The simulation shows that EESM and MIESM algorithms bring a similar throughput performance comparing to the ideal CQI choice, but mapping function of EESM method is simpler than MIESM method. Also, EESM method requires all subcarriers to apply the same MCS, which is suitable for TD-LTE system. Therefore, TD-LTE wireless integrated testing instrument adopts EESM method to realize effective SINK link to system mapping.
Long Term Evolution CQI effective SNR EESM MIESM
Xiaowen Li Qianjun Fang Liuwei Shi
Chongqing Key Lab of Mobile Communications Chongqing University of Posts and Telecommunications (CQUPT)Chongqing, China
国际会议
武汉
英文
208-211
2011-08-20（万方平台首次上网日期，不代表论文的发表时间）