Antonis Valkanas

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This paper analyses the impact of RF impairments in a new wireless environment where relays are introduced to improve performances. Thanks to a simulation chain supporting theoretical RF impairments models, different techniques are evaluated. The transmission chain can simulate amplify-and-forward or decode-and-forward protocols in either simple relaying or(More)
Wireless Backhaul mesh networks have attracted attention during the past few years due to their ease of deployment, flexibility and adaptiveness, compared to non-mesh networks. Besides studying and evaluating novel techniques and algorithms for such systems, IST project MEMBRANE aims to develop demonstrators to act as proof of concept and provide an(More)
In this paper, we introduce a simple but efficient multi-user relaying scheme for the uplink of dual-hop wireless access networks employing Decode & Forward relays. This scheme is further combined with cooperative multi-user detection. The link level simulation results obtained for a system based on IEEE 802.16e standard specifications reveal that the(More)
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