Title :
Spectrum usage efficiency of coordinated multi-point transmission in mobile satellite communications
Author_Institution :
Electrionics and Telecommunications Research Institute, Korea
Abstract :
In a mobile satellite system based on orthogonal frequency division multiplexing technique, the beam planning with frequency reuse factor 1 may induce severe inter-beam interference due to the usage of the same subcarrier between user equipments of adjacent beams. In order to solve this problem, this paper shows a coordinated multi-point transmission scheme combined with cyclic delay diversity. The proposed scheme improves frequency usage efficiency in a beam boundary region and minimizes interference inter-beam interference in mobile satellite communications based on orthogonal frequency division multiplexing technique. In addition, simulation results show that it makes total system capacity increased due to the significant improved signal to interference and noise power ratio in beam edge users.
Keywords :
OFDM modulation; diversity reception; mobile satellite communication; radio spectrum management; radiofrequency interference; telecommunication network planning; beam boundary region; beam edge user; beam planning; coordinated multipoint transmission scheme; cyclic delay diversity; frequency reuse factor; frequency usage efficiency; interbeam interference; mobile satellite communication system; noise power ratio; orthogonal frequency division multiplexing technique; signal to interference ratio; spectrum usage efficiency; Delay; Interference; Mobile communication; OFDM; Satellite communication; Satellites; Signal to noise ratio;
Conference_Titel :
Consumer Electronics (ICCE), 2012 IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4577-0230-3
DOI :
10.1109/ICCE.2012.6161830
