In this paper, the problem of channel estimation for Superposition Coded Modulation-Orthogonal Frequency Division Multiplexing (SCM-OFDM) systems over frequency selective channels is investigated.

A peak-to-average-ratio reduction in the channel estimation sequence is one of the key improvements proposed to the Multiband-OFDM Alliance's ultrawideband proposal now being considered by the IEEE ...

To guarantee safe train operations and provide passengers with convenience, such as seamless internet service and robust entertainment options, there is an increasing need for high-reliability, ...