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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Spectral and energy efficiency analysis for massive MIMO multi-pair two-way relaying networks under generalized power scaling
AU - Yang, Jing
AU - Wang, Hongyan
AU - Ding, Jie
AU - Gao, Xiqi
AU - Ding, Zhiguo
N1 - The final publication is available at Springer via http://dx.doi.org/10.1007/s11432-016-9007-2
PY - 2017/10
Y1 - 2017/10
N2 - In this work, we investigate the spectral efficiency (SE) and energy efficiency (EE) for a massivemultiple-input multiple-output multi-pair two-way amplify-and-forward relaying system, where multi-pair users exchange information via a relay station equipped with large scale antennas. We assume that imperfect channel state information is available and maximum-ratio combining/maximum-ratio transmission beamforming is adopted at the relay station. Considering constant or scaled transmit power of pilot sequences, we quantify the asymptotic SE and EE under general power scaling schemes, in which the transmit power at each user and relay station can both be scaled down, as the number of relay antennas tends to infinity. In addition, a closed-form expression of the SE has been obtained approximately. Our results show that by using massive relay antennas, the transmit power at each user and the relay station can be scaled down, with a non-vanishing signal to interference and noise ratio (SINR). Finally, simulation results confirm the validity of our analysis.
AB - In this work, we investigate the spectral efficiency (SE) and energy efficiency (EE) for a massivemultiple-input multiple-output multi-pair two-way amplify-and-forward relaying system, where multi-pair users exchange information via a relay station equipped with large scale antennas. We assume that imperfect channel state information is available and maximum-ratio combining/maximum-ratio transmission beamforming is adopted at the relay station. Considering constant or scaled transmit power of pilot sequences, we quantify the asymptotic SE and EE under general power scaling schemes, in which the transmit power at each user and relay station can both be scaled down, as the number of relay antennas tends to infinity. In addition, a closed-form expression of the SE has been obtained approximately. Our results show that by using massive relay antennas, the transmit power at each user and the relay station can be scaled down, with a non-vanishing signal to interference and noise ratio (SINR). Finally, simulation results confirm the validity of our analysis.
KW - massive MIMO
KW - two-way relaying
KW - power scaling
KW - imperfect CSI
KW - energy efficiency
KW - spectral efficiency
U2 - 10.1007/s11432-016-9007-2
DO - 10.1007/s11432-016-9007-2
M3 - Journal article
VL - 60
JO - Science China Information Sciences
JF - Science China Information Sciences
SN - 1674-733X
M1 - 102303
ER -