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Proposal of QAM-OFDM system with IDAR method for non-linear satellite channel
Author(s)
Date Issued
December 1, 2006
Type
Conference Paper
Abstract
The future satellite communication systems are required to support the higher transmission data rate for providing multimedia services by employing the efficient modulation method such as multi-level QAM. However, the employment of conventional single carrier transmission method with multi-level QAM would cause the fatal degradation of signal quality due to the non-linear amplifiers located at the earth station and satellite. To overcome this problem, this paper proposes the multi-level QAM-OFDM technique with IDAR method designed for satellite channel. In the IDAR method, the characteristics of non-linear amplifiers are required to be known at the receiver. This paper also proposes the estimation method for the characteristics of the non-linear amplifiers by using low PAPR preamble symbols. Various computer simulations are conducted in this paper to verify the effectiveness of proposed method in the non-linear satellite channel. © 2006 IEEE.
Citation
IEEE Vehicular Technology Conference, 6, 2587-2591, 2006