Performance analysis of zero-forcing-precoded scheduling system with adaptive modulation for multiuser-multiple input multiple output transmission
Performance analysis of zero-forcing-precoded scheduling system with adaptive modulation for multiuser-multiple input multiple output transmission
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DOI：
10.1049/iet-com.2015.0201
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发表时间：
2015-11
期刊：
影响因子：
--
通讯作者：
Donghun Lee
中科院分区：
文献类型：
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作者：
Donghun Lee
在这项研究中，作者提出了迫零（ZF）预编码调度系统的性能分析与自适应调制多用户多输入多输出传输。建议的调度系统适应传输速率，并选择最佳的调制，以满足给定的目标误码率（BER）。在用户集不调度和用户集调度两种情况下，推导了自适应调制ZF预编码系统的平均频谱效率的严格闭式表达式。给出了M进制正交幅度调制和M进制相移键控调制的非调度和调度自适应调制系统的误码率的严格闭式表达式。从分析结果中，作者表明，所提出的调度系统提供了性能的平均频谱效率的改善，在非调度系统。此外，与非调度系统相比，所提出的系统提供了信噪比增益，以满足目标BER，而不管调制类型。这是因为通过多用户分集，所提出的系统的分集阶数优于非调度系统的分集阶数上级。
In this study, the author presents performance analysis of a zero-forcing (ZF)-precoded scheduling system with adaptive modulation for multiuser-multiple input multiple output transmission. The proposed scheduling system adapts the transmission rate and selects the best modulation to satisfy a given target bit error rate (BER). The author derive the tight closed-form expressions of the ZF-precoded system with adaptive modulation for the average spectral efficiency where user set non-scheduling and user set scheduling methods are presented. The author also presents the tight closed-form BER expressions of the non-scheduling and scheduling systems with adaptive modulation for M-ary quadrature amplitude modulation and M-ary phase shift keying modulation. From the analytical results, the author shows that the proposed scheduling system provides performance improvement of the average spectral efficiency over the non-scheduling system. Moreover, the proposed system provides the signal to noise ratio gain compared with the non-scheduling system to satisfy the target BER regardless of modulation types. This is because the diversity order of the proposed system is superior to that of the non-scheduling system by multi-user diversity.