Power-Line Enhanced Cooperative Wireless Communications
AuthorsMarc Kuhn, Stefan Berger, Ingmar HammerstrÃ¶m, and Armin Wittneben
ReferenceIEEE JSAC Special Issue on Power Line Communication, July 2006.
AbstractIn this paper we investigate the use of Power-Line Communication (PLC) to assist cooperative wireless relaying. We consider a communication scheme that uses the power-line to initialize and synchronize wireless amplify-and-forward (AF) relays and to broadcast information between the relays. Starting from an analysis of transfer functions and noise measurements of PLC channels in office and residential environments we propose a power-line transmission scheme for the inter-relay-communication and assess the influence of this scheme on wireless relaying. This scheme is based on linear pre-coded OFDM; it is designed to optimally exploit the frequency diversity available on PLC channels. The use of PLC leads to a very flexible way of enhancing wireless communications by plugging in additional relays where they are needed – without additional wiring.
KeywordsPower-line communication, linear pre-coding, pre-coded OFDM, MIMO systems, cooperative wireless relaying
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