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Multi-carrier spread-spectrum and related topics
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متن کاملDigital multi-carrier spread spectrum versus direct sequence spread spectrum for resistance to jamming and multipath
We compare single user digital multi-carrier spread spectrum (MC-SS) modulation with direct sequence (DS) SS (with a modified implementation) in the presence of narrowband interference (NBI) and multipath fading. We derive closed-form expressions for the symbol error probability for both the linear MMSE receiver as well as the conventional matched-filter receiver under different scenarios: addi...
متن کاملNew advances in Multi-Carrier Spread Spectrum communications
Spread Spectrum techniques are classically used in tactical communications, in order to mitigate inte~erence due to jamming, while providing a low probability of intercept. This paper addresses a new SS technique, referred to as Multi-Carrier Spread Spectrum (MC-SS). An original MC-SS scheme is proposed using polyphase filtering. As for tactical communications, dramatic pe~ormance improvements ...
متن کاملMulti-carrier Spread Spectrum Modulation with Reduced Dynamic Range
| Multi-carrier (MC) modulation has been recently proposed for code-division multiple access (CDMA) mobile radio communications, by modulating an identical symbol on multiple carriers of same magnitude. Certain phase o sets assigned to each carrier de ne a code that is given to a speci c user. We introduce a CDMA system based on multi-carrier spread spectrum (MC-SS) with one identical code for ...
متن کاملA Time Domain View to Multi-Carrier Spread Spectrum
Due to the success of DS-SS CDMA and OFDM in the early nineties, several approaches were developed to combine both schemes. Many papers which deal with multi-carrier techniques concentrate on signal processing in the frequency domain. This paper reviews research on time domain signal processing for multi-carrier spread-spectrum systems. Basic characteristics such as spectral shape, correlation ...
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ژورنال
عنوان ژورنال: European Transactions on Telecommunications
سال: 1999
ISSN: 1124-318X,1541-8251
DOI: 10.1002/ett.4460100404