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Single-carrier frequency-domain equalization (SC-FDE) occupies a concise transmitting structure and a low peak-to-average power ratio (PAPR). These advantages are conducive to the miniaturization of the satellite systems and increase the robustness to the non-linear distortion of amplifiers. Nowadays, satellite communication systems set out to work at Ka or higher frequency bands to support the high...
Constant envelope orthogonal frequency division multiplexing (CE-OFDM) is a waveform that can achieve 0dB peak-to-average power ratio and avoid the signal distortion caused by the nonlinear power amplifier. However, the carrier frequency offset (CFO) in CE-OFDM systems can cause errors at phase unwrapper module. In this paper, a CFO estimation scheme is proposed for CE-OFDM in satellite communication...
Although great progress on satellite multiple access has been made both in Random Access (RA) algorithms and Demand Assigned Multiple Access (DAMA), packets collision in RA strategy and large latency in DAMA still present an obstacle to the applying for complex dynamic network respectively. This paper proposes a combination scheme of the two strategies. By taking advantages of both, the scheme assigns...
Quasi-Constant Envelope OFDM transmits dual-stream simultaneously to improve the spectral efficiency of Constant Envelope OFDM. It can provide high data rate links and maintain a low PAPR to reduce the distortion caused by the nonlinear power amplifier. Thus, the quasi-constant envelope OFDM is suitable for satellite communication system. However, the carrier frequency offset (CFO) in satellite communication...
The present random access (RA) scheme in terrestrial LTE (T-LTE) cannot be applied in LTE-satellite system, for the remarkable miss detection probability caused by large difference of propagation delay in satellite communication system. In this paper, a Peak to Average Ratio after Deleting Quasi-users (PAR-DQ) detection algorithm is proposed. The algorithm can deal with the large difference of propagation...
LTE system will share the same frequency band with fixed-satellite service (FSS) in 3400 ~ 3600 MHz, which has been identified as one of the candidate bands for the future development of mobile systems. In this paper, deterministic analysis and Monte Carlo simulation are adopted to study the co-existence of two systems in 3400~3600 MHz based on the FSS parameters in China. In deterministic analysis,...
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