Capacity of MIMO-MAC with transmit channel knowledge in the low SNR regime
Capacity of MIMO-MAC with transmit channel knowledge in the low SNR regime
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DOI：
10.1109/twc.2010.03.090266
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发表时间：
2010-03
影响因子：
10.4
通讯作者：
Xiao Li;Shi Jin;M. Mckay;Xiqi Gao;Kai‐Kit Wong
中科院分区：
文献类型：
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作者：
Xiao Li;Shi Jin;M. Mckay;Xiqi Gao;Kai‐Kit Wong
我们研究了在双散射和里奇亚式褪色的情况下，在低信噪比（SNR）方面，上行链路多源多输入多输出（MIMO）多输入通道（MAC）的总和假定具有完美的通道状态信息（CSI），而每个发射器仅知道其统计CSI。 B/N0和MIMO系统的宽带斜率采用统计波束形成，然后我们在低SNRS处为MIMO-MAC的总和提供了新的分析近似，并研究了传输，接收器和散射相关的影响作为里奇亚人K因子。
We study the sum capacity of the uplink multiuser multiple-input multiple-output (MIMO) multiple-access channel (MAC) in the low signal-to-noise ratio (SNR) regime under double-scattering and Rician fading scenarios. The receiver is assumed to have perfect channel state information (CSI), while each transmitter knows only its statistical CSI. We first derive analytical expressions for the minimum ¿b/N0 and the wideband slope of MIMO systems employing statistical beamforming, based on which we then present new analytical approximations for the sum capacity of the MIMO-MAC at low SNRs, and investigate the effects of transmit, receive and scatterer correlation, as well as Rician K-factor.