Title :
Adaption feedback of precoding matrix indicator for 3GPP LTE/LTE-A system
Author :
Cui, Linli ; Qi, Chaoran ; Chen, Yuan ; Shao, ZhenHai
Author_Institution :
Sch. of Commun. & Inf. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
Limited feedback of channel state information (CSI), which is made up of rank indicator (RI), precoding matrix indicator (PMI) and channel quality indicator (CQI), is an important part in closed-loop transmission for 3GPP Long Time Evolution (LTE)/LTE-Advanced standard. In this paper, an efficient way, where PMI granularity selection method is used in PMI feedback mechanism, is presented to adaptively choose PMI granularity to track the channel variation, especially for fast fading channel. Simulation results show that the adaption feedback of PMI can get a better spectral efficiency and lower BER without much computational cost.
Keywords :
3G mobile communication; Long Term Evolution; fading channels; precoding; 3GPP LTE system; 3GPP LTE-advanced standard; 3GPP Long Time Evolution; BER; adaption feedback; channel quality indicator; channel state information; closed-loop transmission; fading channel; limited feedback; precoding matrix indicator granularity selection method; rank indicator; Bandwidth; Bit error rate; Channel estimation; Fading; MIMO; System performance; Throughput; LTE; MIMO; PMI; Precoding;
Conference_Titel :
High Speed Intelligent Communication Forum (HSIC), 2012 4th International
Conference_Location :
Nanjing, Jiangsu
Print_ISBN :
978-1-4673-0678-2
Electronic_ISBN :
978-1-4673-0676-8
DOI :
10.1109/HSIC.2012.6212976
