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Alternate MIMO AF Relaying Networks With Interference Alignment: Spectral Efficient Protocol and Linear Filter Design

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2 Author(s)
Ki-Hong Park ; Comput., Electr., & Math. Sci. & Eng. (CEMSE) Div, King Abdullah Univ. of Sci. & Technol., Thuwal, Saudi Arabia ; Alouini, M.-S.

In this paper, we study a two-hop relaying network consisting of one source, one destination, and three amplify-and-forward (AF) relays with multiple antennas. To compensate for the capacity prelog factor loss of 1/2 due to the half-duplex relaying, alternate transmission is performed among three relays, and the inter-relay interference due to the alternate relaying is aligned to make additional degrees of freedom. In addition, suboptimal linear filter designs at the nodes are proposed to maximize the achievable sum rate for different fading scenarios when the destination utilizes a minimum mean-square error filter.

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Vehicular Technology, IEEE Transactions on  (Volume:62 ,  Issue: 2 )