Abstract
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.
| Original language | English |
|---|---|
| Article number | 5559499 |
| Pages (from-to) | 3012-3017 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Wireless Communications |
| Volume | 9 |
| Issue number | 10 |
| DOIs | |
| State | Published - 2010.10 |
Keywords
- broadcast channel (BC)
- minimum mean-squared error (MMSE)
- multiple-input multiple-output (MIMO)
- Spatial multiplexing gain
- transmit beamforming
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