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首页> 外文会议>Progress in electromagnetics research symposium 2008 (PIERS 2008) >MIMO Channel Model and Its Impact on the Channel Capacity
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MIMO Channel Model and Its Impact on the Channel Capacity

机译：MIMO信道模型及其对信道容量的影响

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摘要

In order to study the impacts of array configuration and channel model parameters including antenna spacing and scattering angle on the channel capacity of an S-MIMO (Satellite Multiple Input Multiple Output) system, a novel method is proposed to explore the channel capacity under flat fading. A novel channel model is constructed based on the fading correlation matrix which depends on the array configuration. And then using the properties of Wishart distribution, closed-form expressions for the upper and lower bounds on the ergodic capacity of N by M MIMO system are presented in detail. The novel method also could be generalized to MIMO-OFDM systems with any number of transmit and receive antennas. Computer simulation results show that for small spacing the UCA yields higher channel capacity than ULA. The channel capacity is maximized when the antenna spacing increases to a certain point, and further more, the larger the scattering angle, the quicker the channel capacity converges to its maximum. And at high SNR, the upper and lower bounds on the ergodic capacity are close to its true value.
机译：为了研究包括天线间距和散射角在内的阵列配置和信道模型参数对S-MIMO（卫星多输入多输出）系统的信道容量的影响，提出了一种探索平坦衰落下信道容量的新方法。基于依赖于阵列配置的衰落相关矩阵构造了新颖的信道模型。然后利用Wishart分布的性质，详细给出了M MIMO系统对N的遍历容量的上限和下限的闭式表达式。该新颖方法还可以推广到具有任意数量的发射和接收天线的MIMO-OFDM系统。计算机仿真结果表明，对于小间距，UCA比ULA产生更高的信道容量。当天线间距增加到某个点时，信道容量将最大化，而且散射角越大，信道容量收敛到其最大值的速度就越快。在高SNR时，遍历容量的上限和下限接近其真实值。

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  • 来源
  • 会议地点 Hangzhou(CN);Hangzhou(CN)
  • 作者

    Jun Wang; Quan Zhou; Wei Ma; Lede Qiu;

  • 作者单位

    National Key Laboratory of Space Microwave Technology Xi'an Institute of Space Radio Technology,Xi'an 710100,China;

    National Key Laboratory of Space Microwave Technology Xi'an Institute of Space Radio Technology,Xi'an 710100,China;

    National Key Laboratory of Space Microwave Technology Xi'an Institute of Space Radio Technology,Xi'an 710100,China;

    National Key Laboratory of Space Microwave Technology Xi'an Institute of Space Radio Technology,Xi'an 710100,China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 电磁学;
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