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Space-Frequency and Space-Time-Frequency M3FSK for Indoor Multiwire Communications

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3 Author(s)
Adebisi, B. ; Dept. of Commun. Syst., Lancaster Univ., Lancaster, UK ; Ali, S. ; Honary, B.

This paper investigates the multiple emitting multiple receiving points diversity technique as one of the ways of meeting the tripartite conditions of high data rate, less transmit power, and low unwanted electromagnetic radiations of the frequency-selective power-line channels. To be resilient to the intersymbol interference present in frequency-selective fading, the diversity technique must be used in conjunction with wideband multicarrier modulation. We propose an efficient space-frequency and space-time-frequency (STF)-coded multitone M-ary multilevel frequency-shift keying (M3FSK) for high-rate indoor communications over the multiwire power-line channels. We show that coding by using three dimensions of space, frequency, and time, the STF system is capable of achieving up to 8-dB diversity gain. Simulation results are provided to demonstrate the performance improvement of the STF over other diversity schemes as well as over single-wire M3FSK systems in a highly impulsive power line.

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Power Delivery, IEEE Transactions on  (Volume:24 ,  Issue: 4 )