A bit loading technique with reduced complexity for periodically time varying PLC channel

Abstract

This paper focuses on a novel bit loading technique that is capable of reducing the computational complexity associated with the resource allocation in power line communication (PLC) system based on orthogonal frequency division multiplexing (OFDM) scheme. Basically, the proposed technique exploits the existing connection among microslots within one cycle and/or among consecutive cycles of the mains signal to trade computational complexity with data-rate when the channel is periodically time varying. Numerical results, which are based on measured data set, reveal considerable computational complexity savings with low probability of data-rate loss ratio and, as a consequence, the proposed technique can be useful to reduce hardware resource utilization in PLC transceiver based on OFDM scheme for in-home scenario.