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Max-dmin and P-OSM Precoders Performance for Robust and High Data Rate MIMO Transmissions in Underground Tunnels

机译:地下隧道中稳健和高数据速率MIMO传输的Max-dmin和P-OSM预编码器性能

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Multiple-input, Multiple-output (MIMO) techniques have proven their potentiality for transmissions in the public transport domain even in specific propagation context such as tunnels. When perfect channel state information (CSI) is available at the transmitter, performance improvement is allowed through a precoding operation. However, the performances of a such closed-loop MIMO system depend on the spatial correlation of the channel and the available CSI. In this paper, we considered three cases: an uncorrelated MIMO Rayleigh channel and two correlated channels in tunnel (medium and high correlation). The channel matrices are obtained by computing individual complexe impulse responses using ray-tracing simulations with realistic geometric configurations of antennas in a one-way tunnel. The channel is then modelized thanks to the well-known Kronecker model. Therefore, we compared two recent precoders (max-dmin and P-OSM) based on the minimal Euclidean distance criterion. We demonstrated the full diversity of P-OSM and simulated the BER.
机译:多输入多输出(MIMO)技术已经证明了其在公共传输域中传输的潜力,即使在诸如隧道之类的特定传播环境中也是如此。当发射机处有完美的信道状态信息(CSI)时,可以通过预编码操作来提高性能。然而,这种闭环MIMO系统的性能取决于信道和可用CSI的空间相关性。在本文中,我们考虑了三种情况:不相关的MIMO Rayleigh信道和隧道中的两个相关信道(中相关和高相关)。通过使用具有单向隧道中天线的实际几何构型的光线跟踪模拟来计算单个复合物冲激响应,可以获得信道矩阵。然后,借助众所周知的Kronecker模型对通道进行建模。因此,我们基于最小欧几里得距离准则比较了两个最近的预编码器(max-dmin和P-OSM)。我们展示了P-OSM的全部多样性并模拟了BER。

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