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Sociedade Brasileira de Telecomunicações

User Cooperation Using Multiple Antennas

This paper proposes user cooperation strategy using multiple antennas technology (MIMO). In a first model we used a Code Division Multiple Access (CDMA) system and in a second model we apply the techniques of the decorrelator and Singular Value Decomposition (SVD) to allow cooperation. We show how cooperation using different numbers of antennas can be accomplished. It was considered a cooperation scheme for MIMO MAC channel with two users having single antenna and the receiver with two antennas. The results show that user cooperation with multiple antennas reduces the bit error probability.

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