Low-Cost Nested-MIMO Array for Large-Scale Wireless Sensor Applications
Ministerial Key Laboratory of JGMT, School of Electronic Engineering and Optoelectronic Technology, Nanjing University of Science and Technology, Nanjing 210094, China
School of Communication and Information Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
Author to whom correspondence should be addressed.
Academic Editors: Zhiguo Shi, Yujie Gu and Rongxing Lu
Received: 25 March 2017 / Revised: 7 May 2017 / Accepted: 9 May 2017 / Published: 12 May 2017
In modern communication and radar applications, large-scale sensor arrays have increasingly been used to improve the performance of a system. However, the hardware cost and circuit power consumption scale linearly with the number of sensors, which makes the whole system expensive and power-hungry. This paper presents a low-cost nested multiple-input multiple-output (MIMO) array, which is capable of providing
degrees of freedom (DOF) with
physical sensors. The sensor locations of the proposed array have closed-form expressions. Thus, the aperture size and number of DOF can be predicted as a function of the total number of sensors. Additionally, with the help of time-sequence-phase-weighting (TSPW) technology, only one receiver channel is required for sampling the signals received by all of the sensors, which is conducive to reducing the hardware cost and power consumption. Numerical simulation results demonstrate the effectiveness and superiority of the proposed array.
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MDPI and ACS Style
Zhang, D.; Wu, W.; Fang, D.; Wang, W.; Cui, C. Low-Cost Nested-MIMO Array for Large-Scale Wireless Sensor Applications. Sensors 2017, 17, 1105.
Zhang D, Wu W, Fang D, Wang W, Cui C. Low-Cost Nested-MIMO Array for Large-Scale Wireless Sensor Applications. Sensors. 2017; 17(5):1105.
Zhang, Duo; Wu, Wen; Fang, Dagang; Wang, Wenqin; Cui, Can. 2017. "Low-Cost Nested-MIMO Array for Large-Scale Wireless Sensor Applications." Sensors 17, no. 5: 1105.
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