NDLI: Bit error rate evaluation of a spectrally efficient CDMA scheme for geostationary satellite communications

Content Provider	IEEE Xplore Digital Library
Author	Geraniotis, E. Gerakoulis, D.
Copyright Year	2000
Description	Author affiliation: Inst. of Syst. Res., Maryland Univ., College Park, MD, USA (Geraniotis, E.)
Abstract	Spectrally efficient CDMA (SE-CDMA) is a multiple access and modulation scheme proposed for multibeam geostationary communications satellites that provides fixed service directly to the end users. The SE-CDMA is designed to meet the service requirements for high spectral efficiency and low bit error rate (BER) given the on-board power limitations. Its implementation consists of a concatenated Reed-Solomon/turbo channel encoder, of a two step spreading operation isolating the satellite beams and users within each beam and of a M-ary PSK modulator. The up and down SE-CDMA links are considered to be coupled at the satellite by a CDMA routing circuit which performs a despreading and respreading operation. This paper presents the system architecture and the BER performance of the proposed SE-CDMA. Performance results show that the system can provide high spectral efficiency at very low BER and at low E/sub b//N/sub 0/.
Starting Page	254
Ending Page	258
File Size	494116
Page Count	5
File Format	PDF
ISBN	0769507220
DOI	10.1109/ISCC.2000.860647
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-07-06
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Bit error rate Multiaccess communication Downlink Artificial satellites Concatenated codes Routing Frequency Phase shift keying Optical modulation Coupling circuits
Content Type	Text
Resource Type	Article

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