Efficient modeling of low‐resolution millimeter‐wave transceivers for massive MIMO wireless communications systems
Efficient modeling of low‐resolution millimeter‐wave transceivers for massive MIMO wireless communications systems
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DOI：
10.1002/mop.32727
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发表时间：
2020-11
影响因子：
1.5
通讯作者：
N. Estes;Kang Gao;B. Hochwald;J. N. Laneman;J. Chisum
中科院分区：
文献类型：
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作者：
N. Estes;Kang Gao;B. Hochwald;J. N. Laneman;J. Chisum
我们提出了一种基于高保真度测量的低复杂度毫米波发射和接收电路的非线性模型，用于设计和分析1位开关键（OOK）大规模MIMO无线通信系统。接收模型基于一个38 GHz能量探测器，代表最先进的OOK毫米波接收器。该模型进行了验证与测量，包括非线性噪声建模。使用该模型预测了大规模大规模MIMO系统的性能，并将预测结果与4个发射元件、N个接收元件的测试平台进行了比较。最后，我们计算了几个OOK大规模MIMO系统的信道容量，探索在功耗和发送和接收小区的数量的权衡。结果表明，具有低功耗前置放大器的1位OOK阵列可以实现与经典线性接收机相似的容量，而功耗不到十分之一。1位阵列通过增加单元总数来补偿每个单元的简单性，同时保持较低的总体功耗。
We present a high‐fidelity measurement‐based nonlinear model of low‐complexity millimeter‐wave transmit and receive circuits for design and analysis of 1‐bit on‐off‐key (OOK) massive MIMO wireless communications systems. The receive model is based upon a fabricated 38 GHz energy detector, representative of state‐of‐the‐art OOK millimeter‐wave receivers. The model is validated with measurements and includes nonlinear noise modeling. Performance of a large‐scale massive MIMO system is predicted with the model, and predictions are compared against a 4‐transmit‐element, N‐receive‐element testbed. Finally, we compute the channel capacity of several OOK massive MIMO systems, exploring tradeoffs in power consumption and number of transmit and receive cells. Results indicate a 1‐bit OOK array with low power pre‐amplifiers can achieve similar capacity to a classical linear receiver with less than one tenth the power consumption. The 1‐bit array compensates for the per‐cell simplicity by increasing the total number of cells while maintaining low overall power consumption.