The performance analysis of the distributed massive multiple-input multipleoutput (MIMO) system under the mismatch of the radio frequency (RF) circuits is studied. Based on the performance analysis and the principle of max ratio transmission (MRT), a closed-form expression of achievable downlink rate is derived. The result of simulation validates that the RF mismatch on base station (BS) can be well evaluated with this expression. If the amplitude variance of RF gain is more than 1 dB or the phase of RF mismatch is more than π/2 on BS, the maximum of the achievable downlink rate loss of users is ffty percent larger than a system with ideal RF. The system performance is seriously affected by the RF mismatch, which verifes that the performance analysis for the RF mismatch is indispensable.
WEN Ben-ben, LIU Tao, WANG Hao
. Performance Analysis of Distributed Massive MIMO Systems under RF Mismatch[J]. Journal of Applied Sciences, 2018
, 36(6)
: 904
-913
.
DOI: 10.3969/j.issn.0255-8297.2018.06.003
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