Title :
Link-level performance of satellite DMB system a considering frequency & timing synchronization error and HPA non-linearity
Author :
Park, Sungho ; Cha, Insuk ; Chang, KyungHi
Author_Institution :
Graduate Sch. of Inf. Technol. & Telecommun., Inha Univ., Inchon, South Korea
Abstract :
The DAB (digital audio broadcasting) system which is based on Eureka-147 employing COFDM (coded orthogonal frequency division multiplexing) technique is evolved into DMB (digital multimedia broadcasting) system that is categorized into terrestrial DMB and satellite DMB. The satellite DMB is multi-channel multimedia broadcasting service for the reception by the portable or vehicular receiver. Link level performance of satellite DMB system A considering the sensitivity of HPA non-linearity has been analyzed in this paper. We choose the appropriate value of HPA back-off to reflect major practical RF impairment. We also investigated time and frequency synchronization techniques, which were suitable for satellite DMB system A. Finally, we verified the overall link level performance considering the above RF impairment and frequency offset.
Keywords :
OFDM modulation; direct broadcasting by satellite; multimedia communication; power amplifiers; radiofrequency amplifiers; satellite links; synchronisation; coded orthogonal frequency division multiplexing; digital multimedia broadcasting; frequency synchronization error; high power amplifier nonlinearity; link-level performance; multichannel multimedia broadcasting service; satellite DMB system; timing synchronization error; Computer errors; Digital multimedia broadcasting; Frequency synchronization; Information technology; Multimedia systems; OFDM; Performance analysis; Radio spectrum management; Satellite broadcasting; Timing;
Conference_Titel :
Signal Processing Systems Design and Implementation, 2005. IEEE Workshop on
Print_ISBN :
0-7803-9333-3
DOI :
10.1109/SIPS.2005.1579830
