Title :
Requirements of timing and frequency synchronizations for multi-user OFDM on satellite mobile channel
Author :
Wei, Lei ; Schlegel, Christian
Author_Institution :
Signal Process. Res. Inst., Univ. of South Australia, The Levels, SA, Australia
fDate :
28 Nov- 2 Dec 1994
Abstract :
The performance of multi-user orthogonal frequency division multiplexing (OFDM) with raised cosine time domain pulse shaping is studied on the satellite mobile channel (SMC). The relationship between the requirement of the synchronization and the roll-off rate (β) of the pulse shaping is explored. In Gaussian and typical Rician (K=10) channels multi-user OFDM with β=0.2 requires timing and carrier frequency synchronization accuracies of 4% and 2%, respectively, in order to avoid severe degradation due to multi-user adjacent channel interference, while on Rayleigh channels these values must be better than 2% and 1%
Keywords :
Gaussian channels; Rayleigh channels; Rician channels; adjacent channel interference; frequency division multiplexing; mobile satellite communication; multi-access systems; synchronisation; Gaussian channels; Rayleigh channels; Rician channels; adjacent channel interference; frequency synchronization; multi-user OFDM; orthogonal frequency division multiplexing; raised cosine time domain pulse shaping; roll-off rate; satellite mobile channel; severe degradation; timing synchronization; Degradation; Frequency synchronization; Interchannel interference; OFDM; Pulse shaping methods; Rayleigh channels; Rician channels; Satellites; Sliding mode control; Timing;
Conference_Titel :
Global Telecommunications Conference, 1994. GLOBECOM '94. Communications: The Global Bridge., IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-1820-X
DOI :
10.1109/GLOCOM.1994.512693
