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In the square-root Nyquist transmit-filtered Single-Carrier (SC) transmission, increasing the roll-off factor can reduce the Peak-to-Average Power Ratio (PAPR) of the transmit signal. Furthermore, since the signal bandwidth becomes wider, larger frequency diversity gain can be achieved. In the authors' previous work, they proposed joint Minimum Mean Square Error Frequency-Domain Equalization (MMSE-FDE) & spectrum combining for the Cyclic Prefix (CP) inserted SC block transmission. However, the CP insertion reduces the spectrum efficiency. In this paper, they propose a joint overlap FDE & spectrum combining for the Nyquist filtered SC transmission without CP insertion.
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