Pub Date : 2019-09-08DOI: 10.1109/PIMRCW.2019.8880828
Majed Saad, Feyiz Chris Lteif, A. Ghouwayel, Hussein Hijazi, J. Palicot, F. Bader
Generalized spatial modulation (GSM) is a promising technique that can highly increase the spectral efficiency for ultra-high data rate systems. However, its performance degrades in highly correlated channels such as those in the millimeter wave (mmWave) and sub-Terahertz (sub-THz) bands. GSM conveys information by the index of the activated transmit antenna combination (TAC) and by the M-ary symbols. In conventional GSM, the legitimate TACs are randomly selected, where their number should be a power of 2. In this paper, a simplified EGSM (S-EGSM) based on TAC selection but without instantaneous channel side information (CSI) is proposed for highly correlated channels. Moreover, an efficient Index-to-Bit mapping for spatial bits based on Gray coding is proposed to reduce the spatial bit-error rate (BER) instead of using the normal binary mapping as in conventional GSM. Simulation results show that the proposed TAC selection without instantaneous CSI (S-EGSM) outperforms the existing method by 1.4 dB in highly correlated channels. In addition, the proposed S-EGSM when compared to TAC selection with instantaneous CSI can be considered as a good tradeoff between performance and complexity since it reduces the feedback and real-time computation overhead due to instantaneous TAC selection. Finally, simulation results of gray coding for spatial bits show a performance gain of the order of 1-2 dB in highly correlated channels, and which becomes less significant in case of low spatially correlated channels.
{"title":"Generalized Spatial Modulation in Highly Correlated Channels","authors":"Majed Saad, Feyiz Chris Lteif, A. Ghouwayel, Hussein Hijazi, J. Palicot, F. Bader","doi":"10.1109/PIMRCW.2019.8880828","DOIUrl":"https://doi.org/10.1109/PIMRCW.2019.8880828","url":null,"abstract":"Generalized spatial modulation (GSM) is a promising technique that can highly increase the spectral efficiency for ultra-high data rate systems. However, its performance degrades in highly correlated channels such as those in the millimeter wave (mmWave) and sub-Terahertz (sub-THz) bands. GSM conveys information by the index of the activated transmit antenna combination (TAC) and by the M-ary symbols. In conventional GSM, the legitimate TACs are randomly selected, where their number should be a power of 2. In this paper, a simplified EGSM (S-EGSM) based on TAC selection but without instantaneous channel side information (CSI) is proposed for highly correlated channels. Moreover, an efficient Index-to-Bit mapping for spatial bits based on Gray coding is proposed to reduce the spatial bit-error rate (BER) instead of using the normal binary mapping as in conventional GSM. Simulation results show that the proposed TAC selection without instantaneous CSI (S-EGSM) outperforms the existing method by 1.4 dB in highly correlated channels. In addition, the proposed S-EGSM when compared to TAC selection with instantaneous CSI can be considered as a good tradeoff between performance and complexity since it reduces the feedback and real-time computation overhead due to instantaneous TAC selection. Finally, simulation results of gray coding for spatial bits show a performance gain of the order of 1-2 dB in highly correlated channels, and which becomes less significant in case of low spatially correlated channels.","PeriodicalId":158659,"journal":{"name":"2019 IEEE 30th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC Workshops)","volume":"246 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124235068","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}
Pub Date : 2019-09-01DOI: 10.1109/pimrcw.2019.8880810
{"title":"Other reviewers: Additional Reviewers","authors":"","doi":"10.1109/pimrcw.2019.8880810","DOIUrl":"https://doi.org/10.1109/pimrcw.2019.8880810","url":null,"abstract":"","PeriodicalId":158659,"journal":{"name":"2019 IEEE 30th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC Workshops)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124824688","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}
Pub Date : 2019-09-01DOI: 10.1109/PIMRCW.2019.8880841
Chuili Kong, Gongzheng Zhang, Xiaocheng Liu, Rong Li, J. Wang, Peiwei Wang
This paper investigates the impact of pilot sequences on the digital self-interference cancellation (SIC) in full-duplex systems. Nonlinearity may be introduced to the self-interference (SI) signal by the circuits, especially the high power amplifier, which needs to be modeled and estimated for SIC. Applying the parallel Hammerstein model, the nonlinearity and the multipath channels are jointly estimated based on pilot sequence. By implementing the Pseudo-Noise (PN) and Zadoff-Chu (ZC) sequences, we evaluate the estimation accuracy and SIC performance. In addition, the impact of the power misalignment between the pilot and the data is studied. The results suggest that the SI can be almost completely removed with both PN and ZC sequences when the transmit power is low. However, with high transmit power where the nonlinearity effect is more severe, the PN sequence outperforms the ZC sequence due to their different nonlinearity behaviors. Then, by comparing different power level settings, we show that the best strategy for digital cancellation is to set the transmit powers of the pilot and the data be approximately the same.
{"title":"Impact of Pilot Sequence on Self-Interference Cancellation for Full-Duplex Radios","authors":"Chuili Kong, Gongzheng Zhang, Xiaocheng Liu, Rong Li, J. Wang, Peiwei Wang","doi":"10.1109/PIMRCW.2019.8880841","DOIUrl":"https://doi.org/10.1109/PIMRCW.2019.8880841","url":null,"abstract":"This paper investigates the impact of pilot sequences on the digital self-interference cancellation (SIC) in full-duplex systems. Nonlinearity may be introduced to the self-interference (SI) signal by the circuits, especially the high power amplifier, which needs to be modeled and estimated for SIC. Applying the parallel Hammerstein model, the nonlinearity and the multipath channels are jointly estimated based on pilot sequence. By implementing the Pseudo-Noise (PN) and Zadoff-Chu (ZC) sequences, we evaluate the estimation accuracy and SIC performance. In addition, the impact of the power misalignment between the pilot and the data is studied. The results suggest that the SI can be almost completely removed with both PN and ZC sequences when the transmit power is low. However, with high transmit power where the nonlinearity effect is more severe, the PN sequence outperforms the ZC sequence due to their different nonlinearity behaviors. Then, by comparing different power level settings, we show that the best strategy for digital cancellation is to set the transmit powers of the pilot and the data be approximately the same.","PeriodicalId":158659,"journal":{"name":"2019 IEEE 30th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC Workshops)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126148862","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}
Pub Date : 2019-09-01DOI: 10.1109/PIMRCW.2019.8880850
O. Apilo, J. Mäkelä, Atte Kuosmonen
In this paper, we evaluate the suitability of LTE for Machine-Type Communications (LTE-M) and Narrowband IoT (NB-IoT) for sport wearables. The evaluation is done in a live test network using commercial evaluation boards. The performance is measured in terms of throughput, latency, power consumption, NB-IoT cell reselection delay, and link distance. Based on the results, both NB-IoT and LTE-M are able to support periodic training data updates and message reception in normal conditions. The power consumption of the measured devices varies considerably, especially the measured LTE-M device consumes significantly more power than the power-optimized NB-IoT device. However, the current smart watch batteries should be able to support several hour training sessions if the non-modem power consumption is low. Coverage enhancements for NB-IoT can increase the link distance significantly with the cost of decreased throughput and increased delay, which prevents the use of fast training data upload at extended coverage regions.
{"title":"Evaluation of Cellular IoT for Sport Wearables","authors":"O. Apilo, J. Mäkelä, Atte Kuosmonen","doi":"10.1109/PIMRCW.2019.8880850","DOIUrl":"https://doi.org/10.1109/PIMRCW.2019.8880850","url":null,"abstract":"In this paper, we evaluate the suitability of LTE for Machine-Type Communications (LTE-M) and Narrowband IoT (NB-IoT) for sport wearables. The evaluation is done in a live test network using commercial evaluation boards. The performance is measured in terms of throughput, latency, power consumption, NB-IoT cell reselection delay, and link distance. Based on the results, both NB-IoT and LTE-M are able to support periodic training data updates and message reception in normal conditions. The power consumption of the measured devices varies considerably, especially the measured LTE-M device consumes significantly more power than the power-optimized NB-IoT device. However, the current smart watch batteries should be able to support several hour training sessions if the non-modem power consumption is low. Coverage enhancements for NB-IoT can increase the link distance significantly with the cost of decreased throughput and increased delay, which prevents the use of fast training data upload at extended coverage regions.","PeriodicalId":158659,"journal":{"name":"2019 IEEE 30th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC Workshops)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121909779","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}
Pub Date : 2019-09-01DOI: 10.1109/pimrcw.2019.8880811
B. Jiao, Peiying Zhu, Yawen Chen, Wenpeng Jing
: Mobile cyber-physical systems (M-CPSs) are envisaged as an integral part of our digital future. Dependability of M-CPSs is subject to timely, reliable, and secure information exchange among M-CPS entities. Information exchange provisioning in such systems is conventionally built with sole reliance on wireless connectivity. The conventional approaches, however, fail to efficiently exploit dynamism and heterogeneity, and to incorporate computing/cooperation as alternative system-wide tools for information exchange. To address these issues, we approach M-CPSs dependability from the information exchange perspective and define dependable-exchange-of-information (DeX) indicating collective M-CPS capability of information exchange provisioning. We then propose a cloud-based architecture for DeX provisioning as
{"title":"List of papers with PDF files","authors":"B. Jiao, Peiying Zhu, Yawen Chen, Wenpeng Jing","doi":"10.1109/pimrcw.2019.8880811","DOIUrl":"https://doi.org/10.1109/pimrcw.2019.8880811","url":null,"abstract":": Mobile cyber-physical systems (M-CPSs) are envisaged as an integral part of our digital future. Dependability of M-CPSs is subject to timely, reliable, and secure information exchange among M-CPS entities. Information exchange provisioning in such systems is conventionally built with sole reliance on wireless connectivity. The conventional approaches, however, fail to efficiently exploit dynamism and heterogeneity, and to incorporate computing/cooperation as alternative system-wide tools for information exchange. To address these issues, we approach M-CPSs dependability from the information exchange perspective and define dependable-exchange-of-information (DeX) indicating collective M-CPS capability of information exchange provisioning. We then propose a cloud-based architecture for DeX provisioning as","PeriodicalId":158659,"journal":{"name":"2019 IEEE 30th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC Workshops)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124704716","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}
Pub Date : 2019-09-01DOI: 10.1109/PIMRCW.2019.8880847
Zewei Jing, Qinghai Yang, Meng Qin, K. Kwak
In this paper, we propose an adaptive cross-system resource allocation algorithm while taking into account the long term max-min fairness in the emerging multi-access edge computing (MEC) networks. Specifically, we consider a novel MEC framework which allows smart devices (SDs) to offload their tasks simultaneously to multiple MEC servers through multiple radio access technologies (multi-RATs). In particular, the long term max-min fairness problem is modeled as the stochastic maximization of the minimum time averaged SD utility by jointly considering the SD task splitting, communication and MEC computation resource allocation. To make the formulated problem tractable, we first convert it to a time averaged stochastic maximization problem by an equivalent transformation. Then, an adaptive task splitting and resource allocation algorithm is proposed based on the Lyapunov optimization technique, which makes decisions only according to the current network status and queue state information, without a prior distribution knowledge. Extensive simulations show that the Jain's fairness index of our proposed algorithm can converge to closely 1 quickly and outperforms the traditional sum rate based algorithm.
{"title":"Long Term Max-min Fairness Guarantee Mechanism: Adaptive Task Splitting and Resource Allocation in MEC-enabled Networks","authors":"Zewei Jing, Qinghai Yang, Meng Qin, K. Kwak","doi":"10.1109/PIMRCW.2019.8880847","DOIUrl":"https://doi.org/10.1109/PIMRCW.2019.8880847","url":null,"abstract":"In this paper, we propose an adaptive cross-system resource allocation algorithm while taking into account the long term max-min fairness in the emerging multi-access edge computing (MEC) networks. Specifically, we consider a novel MEC framework which allows smart devices (SDs) to offload their tasks simultaneously to multiple MEC servers through multiple radio access technologies (multi-RATs). In particular, the long term max-min fairness problem is modeled as the stochastic maximization of the minimum time averaged SD utility by jointly considering the SD task splitting, communication and MEC computation resource allocation. To make the formulated problem tractable, we first convert it to a time averaged stochastic maximization problem by an equivalent transformation. Then, an adaptive task splitting and resource allocation algorithm is proposed based on the Lyapunov optimization technique, which makes decisions only according to the current network status and queue state information, without a prior distribution knowledge. Extensive simulations show that the Jain's fairness index of our proposed algorithm can converge to closely 1 quickly and outperforms the traditional sum rate based algorithm.","PeriodicalId":158659,"journal":{"name":"2019 IEEE 30th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC Workshops)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114193580","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}
Pub Date : 2019-09-01DOI: 10.1109/PIMRCW.2019.8880826
Simon Bicais, Jean-Baptiste Doré
Wireless communications in the sub-THz bands are contemplated to achieve the soon required Tbit/s data rate. To fulfill this requirement, sub-THz transceivers aggregate several carriers, or in other words, implement channel bonding. In this paper we investigate the mitigation of the carrier frequency offset impact on channel bonding systems. In contrast to the literature, we consider that each of the carriers is corrupted by an independent random carrier frequency offset. Moreover, we do not address the carrier frequency offset estimation to compensate it but instead the optimization of the demodulation to mitigate the impact of this impairment. First, a system model is presented to describe channel bonding transceivers corrupted by carrier frequency offsets and the analytical expression of the resulting interference is outlined. Second, we pursue the analytical study for systems using waveforms with rectangular pulse-shaping. By evaluating the capacity, it is exhibited that a detection algorithm jointly demodulating the carriers could enhance the performance. Third, several detection algorithms are introduced and compared by means of numerical simulations. We show that a joint linear detection algorithm achieves a significant performance gain in comparison to a receiver demodulating independently the carriers.
{"title":"Mitigation of Carrier Frequency Offset in a Sub-THz Channel Bonding Scenario","authors":"Simon Bicais, Jean-Baptiste Doré","doi":"10.1109/PIMRCW.2019.8880826","DOIUrl":"https://doi.org/10.1109/PIMRCW.2019.8880826","url":null,"abstract":"Wireless communications in the sub-THz bands are contemplated to achieve the soon required Tbit/s data rate. To fulfill this requirement, sub-THz transceivers aggregate several carriers, or in other words, implement channel bonding. In this paper we investigate the mitigation of the carrier frequency offset impact on channel bonding systems. In contrast to the literature, we consider that each of the carriers is corrupted by an independent random carrier frequency offset. Moreover, we do not address the carrier frequency offset estimation to compensate it but instead the optimization of the demodulation to mitigate the impact of this impairment. First, a system model is presented to describe channel bonding transceivers corrupted by carrier frequency offsets and the analytical expression of the resulting interference is outlined. Second, we pursue the analytical study for systems using waveforms with rectangular pulse-shaping. By evaluating the capacity, it is exhibited that a detection algorithm jointly demodulating the carriers could enhance the performance. Third, several detection algorithms are introduced and compared by means of numerical simulations. We show that a joint linear detection algorithm achieves a significant performance gain in comparison to a receiver demodulating independently the carriers.","PeriodicalId":158659,"journal":{"name":"2019 IEEE 30th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC Workshops)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122103610","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}
Pub Date : 2019-09-01DOI: 10.1109/PIMRCW.2019.8880832
G. Grieco, R. Artuso, Pietro Boccadoro, G. Piro, L. Grieco
The Internet of Drones (IoD) represents a key enabling paradigm for the Internet of Mobile Things. By offering smart interactions among unmanned aerial vehicles, i.e., drones, it promises to support many advanced services, spanning from control signaling and traffic management to real-time applications and multimedia streaming. From a networking perspective, IoD should face heterogeneous architectures and extremely dynamics topologies, while ensuring the different levels of quality of service expected for the enabled applications. In this context, the definition of novel communication protocols and algorithms must be properly supported by valid instruments able to model the overall network architecture, as well as to evaluate and improve its performance. To meet these goals, this work proposes an open source and system-level simulator for the IoD. Developed on top of the well-known Network Simulator 3, it implements the key networking elements (drones, network access points, and Zone Service Provider), a standard-compliant communication stack based on the IEEE 802.11 technology, and scenarios with various mobility model. Thanks to its native modularity, the simulator is ready to be used for investigating the performance of customizable scenarios with a variable number of drones, and can be easily extended with new functionalities.
{"title":"An Open Source and System-Level Simulator for the Internet of Drones","authors":"G. Grieco, R. Artuso, Pietro Boccadoro, G. Piro, L. Grieco","doi":"10.1109/PIMRCW.2019.8880832","DOIUrl":"https://doi.org/10.1109/PIMRCW.2019.8880832","url":null,"abstract":"The Internet of Drones (IoD) represents a key enabling paradigm for the Internet of Mobile Things. By offering smart interactions among unmanned aerial vehicles, i.e., drones, it promises to support many advanced services, spanning from control signaling and traffic management to real-time applications and multimedia streaming. From a networking perspective, IoD should face heterogeneous architectures and extremely dynamics topologies, while ensuring the different levels of quality of service expected for the enabled applications. In this context, the definition of novel communication protocols and algorithms must be properly supported by valid instruments able to model the overall network architecture, as well as to evaluate and improve its performance. To meet these goals, this work proposes an open source and system-level simulator for the IoD. Developed on top of the well-known Network Simulator 3, it implements the key networking elements (drones, network access points, and Zone Service Provider), a standard-compliant communication stack based on the IEEE 802.11 technology, and scenarios with various mobility model. Thanks to its native modularity, the simulator is ready to be used for investigating the performance of customizable scenarios with a variable number of drones, and can be easily extended with new functionalities.","PeriodicalId":158659,"journal":{"name":"2019 IEEE 30th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC Workshops)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131609835","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}
Pub Date : 2019-09-01DOI: 10.1109/PIMRCW.2019.8880829
Ramez Askar, M. Sarmadi, Fabian Undi, Rodrigo Silva Rezende, M. Peter, W. Keusgen, T. Haustein
This paper studies the behavior of self-interference radio channels associated with a $4 times 4$ multiple-input-multiple-output antenna (MIMO) system. Self-interference channel measurements were performed in two indoor environments: Auditorium and reception hall. The captured measurement data are used to characterize ten concurrent self-interference channels - both co-polarized and cross-polarized channels. By means of vector network analyzer, one gigahertz of bandwidth, which occupies 2-to-3-GHz frequency band, is swept to sound these self-interference channels. The channel sounder was equipped with two dually polarized magnetoelectric dipole antennas that were utilized to observe the self-interference channels. Each of the dipole antennas possesses: Two radio-frequency ports, a hemispherical radiation pattern, and an excellent cross-polarization discrimination property. The collected frequency responses of the measured self-interference channels are then digitally processed offline to produce time-domain channel impulse responses. These time-domain responses are presented in form of averaged power-delay profiles. Moreover, we have analyzed statistically the properties of these ten self-interference channels. Time dispersion parameters and their associated values are reported. Furthermore, we presented self-interference channel related parameters such as backscatter maximum peaks and their associated instances of occurrence, and maximum excess delay of the channels.
{"title":"Polarimetric Characterization of MIMO Sub-6-GHz Self-Interference Indoor Radio Channels","authors":"Ramez Askar, M. Sarmadi, Fabian Undi, Rodrigo Silva Rezende, M. Peter, W. Keusgen, T. Haustein","doi":"10.1109/PIMRCW.2019.8880829","DOIUrl":"https://doi.org/10.1109/PIMRCW.2019.8880829","url":null,"abstract":"This paper studies the behavior of self-interference radio channels associated with a $4 times 4$ multiple-input-multiple-output antenna (MIMO) system. Self-interference channel measurements were performed in two indoor environments: Auditorium and reception hall. The captured measurement data are used to characterize ten concurrent self-interference channels - both co-polarized and cross-polarized channels. By means of vector network analyzer, one gigahertz of bandwidth, which occupies 2-to-3-GHz frequency band, is swept to sound these self-interference channels. The channel sounder was equipped with two dually polarized magnetoelectric dipole antennas that were utilized to observe the self-interference channels. Each of the dipole antennas possesses: Two radio-frequency ports, a hemispherical radiation pattern, and an excellent cross-polarization discrimination property. The collected frequency responses of the measured self-interference channels are then digitally processed offline to produce time-domain channel impulse responses. These time-domain responses are presented in form of averaged power-delay profiles. Moreover, we have analyzed statistically the properties of these ten self-interference channels. Time dispersion parameters and their associated values are reported. Furthermore, we presented self-interference channel related parameters such as backscatter maximum peaks and their associated instances of occurrence, and maximum excess delay of the channels.","PeriodicalId":158659,"journal":{"name":"2019 IEEE 30th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC Workshops)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126831186","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}
Pub Date : 2019-09-01DOI: 10.1109/PIMRCW.2019.8880813
Erdem Cil, S. Dumanli
A pattern reconfigurable wearable antenna suitable for smart glasses application is designed to operate at the 2.4 GHz ISM band. The antenna consists of two slots that are placed perpendicular to each other and fed with a single stripline feed. The switches that are located directly on the slots are manipulated to activate different polarizations hence provide polarization diversity. The antenna is prototyped and the simulations are validated through measurements. The antenna has been shown to provide two distinct patterns with a correlation coefficient of less than 0.1.
{"title":"The Design of a Pattern Reconfigurable Antenna Suitable for Smart Glasses","authors":"Erdem Cil, S. Dumanli","doi":"10.1109/PIMRCW.2019.8880813","DOIUrl":"https://doi.org/10.1109/PIMRCW.2019.8880813","url":null,"abstract":"A pattern reconfigurable wearable antenna suitable for smart glasses application is designed to operate at the 2.4 GHz ISM band. The antenna consists of two slots that are placed perpendicular to each other and fed with a single stripline feed. The switches that are located directly on the slots are manipulated to activate different polarizations hence provide polarization diversity. The antenna is prototyped and the simulations are validated through measurements. The antenna has been shown to provide two distinct patterns with a correlation coefficient of less than 0.1.","PeriodicalId":158659,"journal":{"name":"2019 IEEE 30th International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC Workshops)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123760893","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}
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