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The uplink capacity of GEO satellite mobile communication system compatible with TD-SCDMA is presented in this paper. An analysis on the interference and system capacity in the specific system is made according to the multi-beam model based on HFDD. Verified by simulation, the analysis not only provides a theoretical foundation for network planning of satellite system based on TD-SCDMA in terms of...
In order to overcome delay-sensitive shortcoming of satellite communications system based on Time Division Duplex mode, a scheme of acquiring propagation delay of any place within a spot beam is proposed. It is accurately calculated by space geometric model according to the satellite position ranging results by three calibration stations. Based on actual system parameters in China, the influence on...
In this paper, a new compensation scheme for timing deviation is proposed in the SCDMA mobile satellite communication system. Instead of adjusting the timing deviation directly, the scheme adjusts the timing deviation according to the timing deviation of the current period and the last period. Simulation results show that the proposed scheme performs better than the traditional scheme.
In this paper two multi-cell interference cancellation (MCIC) schemes are proposed for the TD-SCDMA compatible mobile satellite service (MSS) system, including the parallel scheme and the serial scheme. In the MCIC schemes inter-cell interference is reconstructed and cancelled with the initial data, which is obtained through traditional single-cell joint detection (SCJD). Both intra-cell and inter-cell...
The plan of constructing satellite communications system has been implementing in China since the miserable Wenchuan Earthquake in 2008. Several radio transmission technologies of terrestrial cellular systems are investigated to adapt to the satellite communications environment. In order to study the feasibility of TDD or HFDD satellite communications system compatible with TD-SCDMA standard, an analytical...
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