Title :
Research of calculating CFI value used in LTE system
Author :
Wang Dan ; Jia Haifeng
Author_Institution :
Chongqing Key Lab. of Mobile Commun., Chongqing Univ. of Posts & Telecommun. (CQUPT), Chongqing, China
Abstract :
This paper investigated the traditional method to determine Physical Downlink Control Channel (PDCCH) format and Control Format Indicator (CFI) value in LTE (Long Term Evolution) system. A modified method to calculate CFI value and the PDCCH format was proposed. Firstly, this method determined the PDCCH format based on the channel conditions, and then calculated the number of Resource Elements (RE) occupied by all the downlink control channels and reference signals. Finally, determined the CFI value based on the calculated number. The simulation results show that this modified method can effectively eliminate the average number of PDCCH blind detection.
Keywords :
Long Term Evolution; wireless channels; CFI value; LTE system; Long Term Evolution system; PDCCH blind detection; PDCCH format; channel conditions; control format indicator value; downlink control channels; physical downlink control channel format; reference signals; resource elements; Bandwidth; Downlink; Long Term Evolution; Mobile communication; OFDM; Simulation; Telecommunications; Control Channel Element (CCE); Control Format Indicator; Long Term Evolution; Physical Downlink Control Channel; Resource Element (RE); blind detection;
Conference_Titel :
Fuzzy Systems and Knowledge Discovery (FSKD), 2012 9th International Conference on
Conference_Location :
Sichuan
Print_ISBN :
978-1-4673-0025-4
DOI :
10.1109/FSKD.2012.6233744
