Array Gain and Diversity Order of Multiuser MISO Antenna Systems
Array Gain and Diversity Order of Multiuser MISO Antenna Systems
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DOI：
10.1007/s10776-008-0078-5
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发表时间：
2008-05
影响因子：
2.5
通讯作者：
Kai‐Kit Wong;Z. Pan
中科院分区：
文献类型：
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作者：
Kai‐Kit Wong;Z. Pan
在考虑广义迫零的情况下，推导了多用户多输入单输出(MISO)广播衰落信道的最优线性信号处理解，其中单个基站在同一频率和时隙内同时与多个移动站通信。然后，我们研究了优化系统的阵列增益(定义为平方信道响应的平均值)和分集阶数(定义为信道响应平方的归一化方差的倒数)。结果表明，当基站同时存在M个用户和n个天线时，多用户MISO系统中每个用户的行为类似于具有(NT−M+1)阶接收分集的单用户系统。
In considering generalized zero-forcing, this paper derives the optimal linear signal processing solution for the multiuser multiple-input single-output (MISO) broadcast fading channels where a single base station is communicating simultaneously to many mobile stations in the same frequency and time slot. We then investigate the array gain, defined as the average of the squared channel response, and the diversity order, defined as the inverse of the normalized variance of the squared channel response, of the optimized system. It is concluded that each user in the multiuser MISO system behaves like a single-user system with (nT−M+ 1)-th order receiver diversity if there areMsimultaneous users andnTantennas are employed at the base station.