Performance of Several MMFSK Systems Using Limiters for High Frequency Power-Line Communications

摘要

This paper presents BER performance of several FH/M-ary multilevel FSK (abbr.MMFSK) and OFDM (MC-SS type) systems using limiters, and compares their properties in an AWGN channel and in a high frequency power-line. The proposed MMFSK systems are modified by using a parallel system and a multi-tone combination system. As a limiter, a soft clipper is adopted. High frequency power-line models terminated by matched and opened impedance are employed. As a result of computer simulation, in the same data rate, it is shown that the BER performance of several MMFSK systems are superior to that of OFDM systems using almost the same bandwidth of MMFSK both in an AWGN channel and in a high frequency power line.