Impulse noise mitigation using precoded SCFDMA for uplink PLC systems

This article presents a new transceiver structure for uplink power line communication (PLC) system based on single carrier frequency division multiple access (SCFDMA) for the mitigation of inherent PLC noise i.e. impulse noise. Moreover, SCFDMA also promises low PAPR values than the conventional orthogonal frequency division multiple access (OFDMA). Furthermore, this work also suggests the employment of linear precoding via Walsh Hadamard transform (WHT) and Zadoff Chu transform (ZCT) to improve the transceiver performance. Adaptive bit loading is also recommended instead of fixed loading to circumvent the channel impairments. Performance of the proposed transceiver in terms of bit error rate (BER) and peak to average power ratio (PAPR) is evaluated in the form of simulations. Results demonstrate that the proposed transceiver for uplink PLC systems perform better than the conventional transceiver design in the presence of additive white Gaussian noise (AWGN) and impulse noise.