基于sdr通信系统的低成本可重构天线阵列的实现

M. Donelli, C. Sacchi
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引用次数: 5

摘要

在过去的几年中,人们对软件定义无线电通信系统(SDR)的兴趣日益浓厚。SDR技术因其可重构能力在通信系统中具有很大的吸引力。由于实际场景的复杂性,通常具有多径传播和异构干扰源的特点,天线起着关键作用。文献表明,使用可重构天线(也称为智能天线)可以显着提高系统性能。本文提出了一种基于微芯片天线的小型低成本天线阵列,该天线阵列将与低成本gnu -无线电SDR测试平台集成。所提出的天线重新配置其辐射特性,通过射频(RF)开关打开/关闭阵列元件。该天线通过适当的优化技术进行软件控制,使信噪比(SNR)最大化。测试结果证明了该天线在提高信噪比和降低误码率方面能够改善SDR通信系统的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Implementation of a low-cost reconfigurable antenna array for SDR-based communication systems
In the last years there has been a growing interest in software-defined radio communication systems (SDR). SDR technologies are attractive for communication systems because of their reconfigurable capabilities. Due to the complexity of real scenarios, usually characterized by multipath propagation and heterogeneous interfering sources, the antenna plays a key role. It is demonstrated by literature that the use of reconfigurable antennas (known also as smart antennas) could dramatically improve system performance. In this paper, we propose a compact and low-cost antenna array, based on microchip antennas, which will be integrated with a low-cost GNU-radio SDR testbed. The proposed antenna reconfigures its radiation characteristics, turning on/off the array elements, by means of radio frequency (RF) switches. The antenna is software controlled by means of a suitable optimization technique that maximizes the signal-to-noise ratio (SNR). Test results can prove the capability of the proposed antenna to improve the performance of SDR telecommunication systems in terms of increased SNR and reduced bit error rate.
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