TY - JOUR
T1 - Analysis of a Low Cost and Low Complexity Adaptive Transmission Scheme for Massive MIMO Systems with Interference
AU - Radbord, Amin
AU - Hafez, Mohammed Abdel
AU - Amini, Mohammadreza
N1 - Publisher Copyright:
© 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2022/10
Y1 - 2022/10
N2 - This paper evaluates a low-complexity Multiuser Adaptive Modulation (MAM) scheme for an uplink massive multiple-input and multiple-output (MIMO) systems with maximum-ratio combining (MRC) linear receivers, which requires only slow-varying large-scale shadowing information for the users. For a channel that includes both small-scale and large-scale fading, the probability density function of signal-to-interference-plus-noise ratio (SINR) is mathematically analyzed and verified by simulation. Furthermore, closed-form expressions are derived for the average spectral efficiency and bit error outage. Since the MRC is desirable in low transmit power, the obtained analytical expressions are approximated at low power levels. Moreover, the paper investigates different users’ arrangements around the base station to achieve the maximum possible bit rate. For MAM with joint power control, optimal power adaptation strategy switching thresholds are also acquired. Compared to the existing research literature, the proposed adaptive scheme by the MRC receiver gives similar performance as a proper adaptive method at low power transmission.
AB - This paper evaluates a low-complexity Multiuser Adaptive Modulation (MAM) scheme for an uplink massive multiple-input and multiple-output (MIMO) systems with maximum-ratio combining (MRC) linear receivers, which requires only slow-varying large-scale shadowing information for the users. For a channel that includes both small-scale and large-scale fading, the probability density function of signal-to-interference-plus-noise ratio (SINR) is mathematically analyzed and verified by simulation. Furthermore, closed-form expressions are derived for the average spectral efficiency and bit error outage. Since the MRC is desirable in low transmit power, the obtained analytical expressions are approximated at low power levels. Moreover, the paper investigates different users’ arrangements around the base station to achieve the maximum possible bit rate. For MAM with joint power control, optimal power adaptation strategy switching thresholds are also acquired. Compared to the existing research literature, the proposed adaptive scheme by the MRC receiver gives similar performance as a proper adaptive method at low power transmission.
KW - Adaptive modulation
KW - Large-scale fading
KW - Massive MIMO
KW - Maximum-ratio combining
KW - Power control
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U2 - 10.1007/s11277-022-09879-5
DO - 10.1007/s11277-022-09879-5
M3 - Article
AN - SCOPUS:85135529972
SN - 0929-6212
VL - 126
SP - 3569
EP - 3593
JO - Wireless Personal Communications
JF - Wireless Personal Communications
IS - 4
ER -