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This paper proposes a simple inter-symbol interference (ISI) and inter-block interference (IBI) elimination scheme for a single carrier block transmission with cyclic prefix (SC-CP) system with an insufficient guard interval (GI). In the SC-CP system, only limited number of symbols in a transmitted block cause the interferences, while all the information data contribute to the interferences in the orthogonal frequency division multiplexing (OFDM) system. Therefore, in the SCCP system, the interferences can be exterminated by only setting transmitted signals to be 0 at certain time slots in a transmitted signal block without changing any parameters or configuration of the system, such as the length of GI. The proposed scheme also can be considered as a simple loading scheme in temporal domain, which tries not to use time slots contaminated by the ISI and the IBI. Moreover, this paper also proposes a pilot signal configuration for the SC-CP system, which enable us to estimate channel impulse response in the discrete frequency domain even when the channel order is longer than the GI length.

Interference Cancellation and Channel Estimation Schemes for Single Carrier Block Transmission with Insufficient Cyclic Prefix