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2018 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)最新文献

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Low computational complexity and minimizing training overhead for hybrid precoding in millimeter wave systems 毫米波系统中混合预编码的低计算复杂度和最小化训练开销
2018 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2018-04-01 DOI: 10.1109/WMCAS.2018.8400644
Ahmed N. Mohammed, I. Kostanic
{"title":"Low computational complexity and minimizing training overhead for hybrid precoding in millimeter wave systems","authors":"Ahmed N. Mohammed, I. Kostanic","doi":"10.1109/WMCAS.2018.8400644","DOIUrl":"https://doi.org/10.1109/WMCAS.2018.8400644","url":null,"abstract":"Millimeter wave (mmWave) hybrid precoding systems are likely to have large antenna arrays to overcome the high channel path loss. In such circumstances, low cost hardware and power consumption are the main challenges. Furthermore, the hardware is tasked with computation of high dimensional optimal matrices of hybrid precoding design using Orthogonal Matching Pursuit (OMP). This paper addresses two algorithms to enhance the efficiency of the OMP reconstruction algorithm in mmWave precoding design. The spectral efficiency of the mmWave system using the proposed algorithms is compared with previous works and the optimal case (a fully digital precoder). The results show that the performance of the proposed algorithms is very close to that of the optimal design even though the complexity of the design is reduced.","PeriodicalId":254840,"journal":{"name":"2018 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132639918","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
The minimum phase property in frequency-independent antennas 频率无关天线的最小相位特性
2018 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2018-04-01 DOI: 10.1109/WMCAS.2018.8400630
H. Foltz, J. Mclean
{"title":"The minimum phase property in frequency-independent antennas","authors":"H. Foltz, J. Mclean","doi":"10.1109/WMCAS.2018.8400630","DOIUrl":"https://doi.org/10.1109/WMCAS.2018.8400630","url":null,"abstract":"The minimum phase property is desirable in broad-band antennas for pulse applications, because it determines whether it is feasible to perform broadband passive equalization of the antenna transfer function to obtain a narrow monopulse response in the time domain. It is well-known that certain classes of broadband antennas such as log-periodic antennas, spirals, and conical spirals are very difficult if not impossible to equalize for a monopulse response. In this paper we will show that this problem is inherent to such antennas, independent of the details of their structure, because it can be shown analytically that the transfer functions associated with them cannot be minimum phase.","PeriodicalId":254840,"journal":{"name":"2018 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121826697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thermo-electric harvesting and Co-Design strategies toward improved energy efficiency of emerging wireless technologies 热电收集和协同设计策略，以提高新兴无线技术的能源效率
2018 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2018-04-01 DOI: 10.1109/WMCAS.2018.8400652
S. Wane
{"title":"Thermo-electric harvesting and Co-Design strategies toward improved energy efficiency of emerging wireless technologies","authors":"S. Wane","doi":"10.1109/WMCAS.2018.8400652","DOIUrl":"https://doi.org/10.1109/WMCAS.2018.8400652","url":null,"abstract":"Innovative Thermo-Electric Harvesting and Co-Design solutions are proposed for overcoming critical limitations in Power-Dissipation of emerging wireless technologies. Experimental analysis is conducted to assess Thermo-Electric conversion performances for MIMO and Phased-Array systems operating at mm-Wave frequencies with Watt-level power dissipation per RFIC channel. Perspectives for WLCSP and SESUB technologies compatible with Thermo-Electric harvesting modules are drawn for 5G and IoT applications. Use of IPDIA 3D High-Density Silicon capacitors with operating temperatures up to 250 °C is proposed toward battery-less solutions.","PeriodicalId":254840,"journal":{"name":"2018 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128385689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Novel metering system of a three-phase oil flow in horizontal pipeline 一种新型水平管道三相油流计量系统
2018 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS) Pub Date : 2018-04-01 DOI: 10.1109/WMCAS.2018.8400621
E. Hassan, S. Iqbal, S. Sheikh
{"title":"Novel metering system of a three-phase oil flow in horizontal pipeline","authors":"E. Hassan, S. Iqbal, S. Sheikh","doi":"10.1109/WMCAS.2018.8400621","DOIUrl":"https://doi.org/10.1109/WMCAS.2018.8400621","url":null,"abstract":"A novel technique is developed to measure the oil and water contents of a horizontal petroleum carrying pipeline. It is based on measuring the conductance and the capacitance in two different locations of the pipe. Each location requires two cylindrical conducting sheets, each covering half of the inner surface of the pipeline and is separated by small gaps at the top and bottom of the pipe. The measurement of the conductance is shown to be sufficient to determine the quantity of brine inside the pipe, while the measurement of the capacitance provides the oil flow rate. Experimental results are used to validate theoretical formulation and the numerical solution. The results are found to be comparable with existing data available in the literature.","PeriodicalId":254840,"journal":{"name":"2018 Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125479499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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