Link Performance Improvement Using Reconfigurable Multiantenna Systems
Link Performance Improvement Using Reconfigurable Multiantenna Systems
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DOI：
10.1109/lawp.2009.2028300
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发表时间：
2009-07
影响因子：
4.2
通讯作者：
C. P. Sukumar;H. Eslami;A. Eltawil;B. Cetiner
中科院分区：
文献类型：
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作者：
C. P. Sukumar;H. Eslami;A. Eltawil;B. Cetiner
在这项工作中，我们认为通过使用多功能可重构天线（MRA）可以实现链路性能的改进。这项工作中使用的每个 MRA 元件都有一个可重新配置的辐射束，可以动态地引导到 Nbeams 可能的方向之一。根据信道条件，为每个 MRA 选择最大化容量或最小化误码率 (SER) 的方向。给出了四种不同传输方案的仿真结果：波束成形 (BF)、最大比合并 (MRC)、空间复用 (SM) 和空时块编码 (STBC)。结果表明，典型的室内信道（IEEE-802.11n 模型 F 和 B）可以实现容量和 SER 的改进。一个关键结果是，这种可重构天线系统需要更少数量的天线（因此，更少数量的射频链）来获得与具有大量射频链的传统多天线系统类似的性能。
In this work, we consider the link performance improvement achievable due to the use of multifunctional reconfigurable antennas (MRAs). Each MRA element used in this work has a reconfigurable radiation beam that can be dynamically steered in one of Nbeams possible directions. Depending on the channel conditions, the direction that maximizes capacity or minimizes symbol error rate (SER) is chosen for each MRA. Simulation results are presented for four different transmission schemes - beamforming (BF), maximum ratio combining (MRC), spatial multiplexing (SM), and space-time block coding (STBC). The results show improvements in both capacity and SER are achievable for typical indoor channels (IEEE-802.11n model F and B). A key result is that this reconfigurable antenna system requires fewer number of antennas (therefore, fewer number of RF chains) to obtain performance similar to those of legacy multiantenna systems with larger number of RF chains.