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In this paper, we present the design and implementation of a PLC (Power-Line Communication) Modem based on Orthogonal Frequency Division Multiplexing (OFDM). The PLC device implements OFDM in both transmitter and receiver using VHDL programming. The OFDM processor is synthesized in a Field Programmable Gate Array (FPGA) that acts as a Core Processor in the PLC Modem. Furthermore, the prototype includes...
Frequency offset is of the main problems in Orthogonal Frequency Division Multiplexing (OFDM) system. A frequency offset between the local oscillator at the transmitter and receiver causes frequency shift in the signal, while in time-varying channel, it can cause a spread of frequency shift known as the Doppler spread. This leads to loss in the orthogonality between subcarriers and results in intercarrier...
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