Directional Space-Time Waveform Design for Interference-Avoiding MIMO Configurations
Directional Space-Time Waveform Design for Interference-Avoiding MIMO Configurations
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DOI：
10.1109/iwat.2019.8730599
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发表时间：
2019-03
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影响因子：
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通讯作者：
Konstantinos Tountas;G. Sklivanitis;D. Pados
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文献类型：
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作者：
Konstantinos Tountas;G. Sklivanitis;D. Pados
我们考虑了多输入多输出（MIMO）链路配置中主动避免干扰的定向空时波形设计问题。我们建议指示发射机以给定的代码序列和到达角与目标接收机进行通信，这些代码序列和到达角经过联合优化，以最大化可达到的最大预检测信号与干扰加噪声比（SINR）。更具体地说，通过设计使最大 SINR 接收器滤波器输出处的 SINR 最大化的时空波形，可以实现向目标接收器的定向传输。与干扰抑制非自适应接收器设计相比，对 MIMO 链路配置中所提出的自适应干扰避免空时波形设计进行的仿真显示出在后置滤波 SINR 和误码率 (BER) 方面的卓越性能。发射机处代码序列和阵列响应矢量的联合优化表明，所提出的时空波形设计与目标接收机处可达到的最大 SINR 的误差在 2 dB 以内。
We consider the problem of directional space-time waveform design for proactive interference avoidance in multiple-input multiple-output (MIMO) link configurations. We propose to instruct the transmitter to communicate with the intended receiver at a given code sequence and angle-of-arrival that are jointly optimized to maximize the maximum attainable pre-detection signal-to-interference-plus-noise ratio (SINR). More specifically, directional transmissions to the intended receiver are achieved by designing space-time waveforms that maximize SINR at the output of the max-SINR receiver filter. Simulation of the proposed adaptive interference-avoiding space-time waveform designs in MIMO link configurations show superior performance in terms of post-filtering SINR and bit-error-rate (BER) when compared to interference-suppressive non-adaptive receiver designs. Joint optimization of the code sequence and array response vector at the transmitter demonstrate that the proposed spacetime waveform designs perform within 2 dB from the maximum attainable SINR at the intended receiver.