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

fYear

2012

fDate

29-31 May 2012

Firstpage

2220

Lastpage

2223

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Fuzzy Systems and Knowledge Discovery (FSKD), 2012 9th International Conference on

Conference_Location

Sichuan

Print_ISBN

978-1-4673-0025-4

Type

conf

DOI

10.1109/FSKD.2012.6233744

Filename

6233744