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Subject

Performance Enhancement of Spread Spectrum LEO Satellite communication System Using Constant Modulus Antenna Array
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논문 기본 정보

Type
Academic journal
Author
LeeByung-Sup (한국항공대학교)
Journal
사단법인 한국위성정보통신학회 한국위성정보통신학회논문지 한국위성정보통신학회논문지 제12권 제2호 KCI Candidated Journals
Published
2017.6
Pages
65 - 70 (6page)

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Performance Enhancement of Spread Spectrum LEO Satellite communication System Using Constant Modulus Antenna Array
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Abstract· Keywords

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The structure of MMSE receiver front-ended by CMA(Constant Modulus Array) array working in CDMA forward link which is applicable to LEO spread spectrum satellite communication system is proposed. By using the despreaded pilot signal of forward link as a reference signal, the CMA array can capture multi-path signals securely even in severely faded LEO satellite channel. The remaining MAI (Multiple Access Interference) is cancelled by the cascaded MMSE receiver. Besides theoretical development, through relevant computer simulation, it is proved that the proposed system shows much better BER performance than any other possible candidate systems. As a spatio-temporal receiver mounted on a mobile vehicle, the proposed system also reduces implemental cost and complexity by adopting the simplest algorithm for its spatial and temporal domain processing.

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