An Adaptive MIMO-OFDMA Relay System
An Adaptive MIMO-OFDMA Relay System
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DOI：
10.1109/wcl.2012.071612.120357
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发表时间：
2012-07
影响因子：
6.3
通讯作者：
D. Munoz;Baile Xie;H. Minn
中科院分区：
文献类型：
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作者：
D. Munoz;Baile Xie;H. Minn
我们考虑时变信道下的多输入多输出（MIMO）天线中继系统，并提出了一种联合中继、天线、子带和MIMO传输模式自适应方案，该方案使天线选择能够在传输开始时利用信道状态信息（CSI），当CSI过时时切换到空频块编码（SFBC）。此外，为了进一步提高系统性能，我们提出了有/没有跨跳功率分配的级联源-中继-目的链路的时间功率和位负载。
We consider multi-input multi-output (MIMO) antennas relay systems under time-varying channels and propose a joint relay, antenna, subband, and MIMO transmission mode adaptation scheme which enables antenna selection to exploit channel state information (CSI) at the beginning of transmission and switch to space-frequency block coding (SFBC) when CSI becomes outdated. Moreover, we propose temporal power and bit loading for the cascaded source-relay-destination link with/without inter-hop power allocation to further enhance the system performance.