Channel Estimation and Parameter Acquisition Systems Employing Cooperative Diversity
نویسندگان
چکیده
In this paper we adapt and evaluate the performance of two classical pilotaided channel estimation schemes designed for OFDM systems: least square and minimum mean square error, in a relay-assisted scenario. We consider the Amplifyand-Forward, which is the simplest relay protocol for cooperative systems. Also, we consider the use of a single antenna at all the terminals: base station, user terminal and relay node. In this scheme we show that the classical channel estimation techniques designed for conventional wireless communications can be extended for relay-assisted based systems under some modifications.
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