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Coherent frequency hopping multiple access (CFHMA) with multiuser detection for mobile communication systems

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3 Author(s)
S. Tomisato ; NTT Mobile Commun. Div., Kanagawa, Japan ; K. Fukawa ; H. Suzuki

This paper proposes a new multiple-access (MA) scheme, coherent frequency hopping MA (CFHMA) with multiuser detection, which effectively obtains the diversity effect for realizing spectrally efficient mobile communications, CFHMA is fundamentally equivalent to a coherent fast frequency hopping frequency-division MA (FDMA) that incorporates low spreading factor direct-sequence (DS) code-division MA (CDMA). Multiple users occupy the same frequency band, and they are simultaneously detected by multiuser detection. There are several implementations of CFHMA. Two major techniques are introduced: coherent hybrid DS fast FH (FFH) (CHYB-DS-FFH) and interleaved FH (IFH). This paper focuses on IFH and discusses its principle of operation, transmission system configuration, and performance aspects. The results suggest the feasibility of a spectrally efficient mobile radio system

Published in:

IEEE Transactions on Vehicular Technology  (Volume:49 ,  Issue: 2 )