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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >On the Performance Evaluation of a MIMO–WCDMA Transmission Architecture for Building Management Systems
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On the Performance Evaluation of a MIMO–WCDMA Transmission Architecture for Building Management Systems

机译：用于建筑物管理系统的MIMO-WCDMA传输架构的性能评估

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摘要

The goal of this study was to investigate the performance of a realistic wireless sensor nodes deployment in order to support modern building management systems (BMSs). A three-floor building orientation is taken into account, where each node is equipped with a multi-antenna system while a central base station (BS) collects and processes all received information. The BS is also equipped with multiple antennas; hence, a multiple input–multiple output (MIMO) system is formulated. Due to the multiple reflections during transmission in the inner of the building, a wideband code division multiple access (WCDMA) physical layer protocol has been considered, which has already been adopted for third-generation (3G) mobile networks. Results are presented for various MIMO orientations, where the mean transmission power per node is considered as an output metric for a specific signal-to-noise ratio (SNR) requirement and number of resolvable multipath components. In the first set of presented results, the effects of multiple access interference on overall transmission power are highlighted. As the number of mobile nodes per floor or the requested transmission rate increases, MIMO systems of a higher order should be deployed in order to maintain transmission power at adequate levels. In the second set of results, a comparison is performed among transmission in diversity combining and spatial multiplexing mode, which clearly indicate that the first case is the most appropriate solution for indoor communications.
机译：这项研究的目的是调查现实无线传感器节点部署的性能，以支持现代建筑管理系统（BMS）。考虑到三层建筑物的方向，其中每个节点都配备了多天线系统，而中央基站（BS）收集并处理所有接收到的信息。 BS还配备了多个天线；因此，制定了多输入多输出（MIMO）系统。由于建筑物内部传输期间的多次反射，已经考虑了宽带码分多址（WCDMA）物理层协议，该协议已被第三代（3G）移动网络采用。给出了针对各种MIMO方向的结果，其中每个节点的平均传输功率被视为特定信噪比（SNR）要求和可解析多径分量数量的输出度量。在第一组呈现的结果中，着重强调了多址干扰对整体传输功率的影响。随着每层移动节点数量的增加或请求的传输速率的增加，应部署更高阶的MIMO系统，以将传输功率维持在适当的水平。在第二组结果中，在分集组合和空间复用模式下的传输之间进行了比较，这清楚地表明第一种情况是室内通信的最合适解决方案。

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