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Spatial Multiplexing Gain for Two Interfering MIMO Broadcast Channels Based on Linear Transceiver

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4 Author(s)
Jaesin Kim ; Sch. of Electr. Eng., Korea Univ., Seoul, South Korea ; Seok-Hwan Park ; Hakjea Sung ; Inkyu Lee

In this letter, we provide an expression of spatial multiplexing gain (SMG) for two mutually interfering multiple-input multiple-output (MIMO) broadcast channels, referred to as MIMO-IBC, with linear transceiver. We derive the SMG with respect to user antenna distribution, and compare the systems with and without cooperation among receive antennas in each cell. Additionally, we propose a linear precoding and decoding algorithm for the MIMO-IBC which maximizes the sum rate by extending a solution for single-cell multiple-input single-output broadcast channels. Simulation results confirm the accuracy of our theoretical SMG analysis for the MIMO-IBC.

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Wireless Communications, IEEE Transactions on  (Volume:9 ,  Issue: 10 )