We investigate a multi-pair two-way decode-andforward relaying aided massive multiple-input multiple-output antenna system under Rician fading channels, in which multiple pairs of users exchange information through a relay station having multiple antennas. Imperfect channel state information is considered in the context of maximum-ratio processing. Closedform expressions are derived for approximating the sum spectral efficiency (SE) of the system. Moreover, we obtain the powerscaling laws at the users and the relay station to satisfy a certain SE requirement in three typical scenarios. Finally, simulations validate the accuracy of the derived results.
翻译：我们调查了在里西时退的渠道下一个多孔双向解码和前向中继辅助的大型多输入多输出多输出天线系统,在该系统中,多对用户通过拥有多天线的中继站交换信息,在最大天线处理范围内考虑不完善的频道国家信息,为接近系统光谱效率(SE)而产生封闭式表达式。此外,我们获得了用户和中继站的权力扩展法,以便在三种典型情况下满足一定的SE要求。最后,模拟验证了得出结果的准确性。
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