Space-Constrained Mixed-ADC Massive MIMO
Space-Constrained Mixed-ADC Massive MIMO
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DOI：
10.1109/spawc.2019.8815459
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发表时间：
2019-07
期刊：
影响因子：
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通讯作者：
Hessam Pirzadeh;A. L. Swindlehurst;J. Nossek
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文献类型：
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作者：
Hessam Pirzadeh;A. L. Swindlehurst;J. Nossek
The uplink performance of a mixed analog-to-digital converter (ADC) massive multiple-input multiple-output (MIMO) architecture with a space-constrained array at the base station (BS) is analyzed. We investigate the effect of spatial correlation and mutual coupling on the spectral efficiency (SE) of the system. First, we analyze to what extent adding a small number of high-resolution ADCs can impact the channel estimation accuracy. Then, we derive a closed-form approximation for the SE. Our analysis demonstrates how a space constraint on a uniform linear array (ULA) can affect the design of a massive MIMO system with low-resolution ADCs. It is shown that by equally spacing a small number of high-resolution ADCs over the array, one can dramatically reduce the performance gap between a system with all low-resolution and all high-resolution ADCs.
