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Sociedade Brasileira de Telecomunicações

A Frequency Domain Resource Allocation Technique with Reduced Complexity for PLC System

The present work aims to suggest a resource allocation approach to reduce computational complexity of bitloading techniques applied to power line communication (PLC) based on multicarrier modulation. This approach is based on grouping adjacent subcarriers and using the same resource allocation in this group, but it results in a datarate degradation. Thus, there is a trade-off between computational complexity reduction and datarate degradation driven by the group length. With in home power line channels data, obtained from a measure campaign covering the frequency bands 1.7-30, 1.7-50 and 1.7-100 MHz , we have shown the trade-off performance. Our results show that the suggested technique is capable of giving priority to computational complexity in exchange for a little data-rate degradation.

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