Pub Date : 2019-04-01DOI: 10.1109/ICT.2019.8798802
T. Dinh, Kun Li, Soichi Watanabe, Y. Karasawa
In this paper, we develop an $K$-order model expressing the specific absorption rate (SAR) at an observation point when evaluating the electromagnetic exposure to multiple-antenna transmitters. By using the proposed model, we will be able to precisely estimate the SARs for different combinations of the relative phases of the sources, and thus to identify the maximum SAR. Detailed discussions on the $K$-order model and the estimation technique will be presented. We also conduct several measurements to verify the performance of the proposed estimation technique, and compare the effectiveness the proposed technique with conventional techniques. As a result, it is confirmed that the proposed technique with $K$-order estimations can considerably reduce the estimation errors, and thus giving highly precise estimated SAR values. In particular, when evaluating of the SAR of a three-antenna configuration, the maximum estimation error caused by conventional estimations is about 6%, which can be reduced to about 3% or 2% by the 1- and 2-order estimations, respectively.
{"title":"A New Measurement Technique to Determine the Maximum SAR of Multiple-Antenna Transmitters Using $K$-Order Models and Scalar E-Field Probes","authors":"T. Dinh, Kun Li, Soichi Watanabe, Y. Karasawa","doi":"10.1109/ICT.2019.8798802","DOIUrl":"https://doi.org/10.1109/ICT.2019.8798802","url":null,"abstract":"In this paper, we develop an $K$-order model expressing the specific absorption rate (SAR) at an observation point when evaluating the electromagnetic exposure to multiple-antenna transmitters. By using the proposed model, we will be able to precisely estimate the SARs for different combinations of the relative phases of the sources, and thus to identify the maximum SAR. Detailed discussions on the $K$-order model and the estimation technique will be presented. We also conduct several measurements to verify the performance of the proposed estimation technique, and compare the effectiveness the proposed technique with conventional techniques. As a result, it is confirmed that the proposed technique with $K$-order estimations can considerably reduce the estimation errors, and thus giving highly precise estimated SAR values. In particular, when evaluating of the SAR of a three-antenna configuration, the maximum estimation error caused by conventional estimations is about 6%, which can be reduced to about 3% or 2% by the 1- and 2-order estimations, respectively.","PeriodicalId":127412,"journal":{"name":"2019 26th International Conference on Telecommunications (ICT)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115137046","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 : 2019-04-01DOI: 10.1109/ICT.2019.8798768
Mingzhu Zhang, Yu Chen, Xiaofeng Tao, I. Darwazeh
Unmanned aerial vehicles (UAVs) are used in legitimate surveillance systems. In this paper, we consider a wireless monitor system that consists of three UAVs. One UAV acts as a legitimate eavesdropper that adopts 1) spoofing relaying and 2) proactive eavesdropping via jamming techniques. In particular, two scenarios are considered if the legitimate eavesdropper has enough power for successful eavesdropping throughout flight time. If the legitimate eavesdropper has enough power, the formulated problem is a convex optimization problem, which can be solved by standard convex optimization techniques. If not, we formulate a non-convex optimization problem and solve it by an iterative algorithm. Numerical results show that the proposed power allocation scheme outperforms the passive eavesdropping and equally distributed jamming power allocation schemes.
{"title":"Power Allocation for Proactive Eavesdropping with Spoofing Relay in UAV Systems","authors":"Mingzhu Zhang, Yu Chen, Xiaofeng Tao, I. Darwazeh","doi":"10.1109/ICT.2019.8798768","DOIUrl":"https://doi.org/10.1109/ICT.2019.8798768","url":null,"abstract":"Unmanned aerial vehicles (UAVs) are used in legitimate surveillance systems. In this paper, we consider a wireless monitor system that consists of three UAVs. One UAV acts as a legitimate eavesdropper that adopts 1) spoofing relaying and 2) proactive eavesdropping via jamming techniques. In particular, two scenarios are considered if the legitimate eavesdropper has enough power for successful eavesdropping throughout flight time. If the legitimate eavesdropper has enough power, the formulated problem is a convex optimization problem, which can be solved by standard convex optimization techniques. If not, we formulate a non-convex optimization problem and solve it by an iterative algorithm. Numerical results show that the proposed power allocation scheme outperforms the passive eavesdropping and equally distributed jamming power allocation schemes.","PeriodicalId":127412,"journal":{"name":"2019 26th International Conference on Telecommunications (ICT)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133611366","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 : 2019-04-01DOI: 10.1109/ICT.2019.8798798
Quang H. Nguyen, Binh P. Nguyen, S. D. Dao, Balagopal Unnikrishnan, R. Dhingra, Savitha Rani Ravichandran, Sravani Satpathy, Nirmal Raja Palaparthi, M. Chua
This paper explores the usefulness of transfer learning on medical imaging for tuberculosis detection. We show an improved method for transfer learning over the regular method of using ImageNet weights. We also discover that the low-level features from ImageNet weights are not useful for imaging tasks for modalities like X-rays and also propose a new method for obtaining low level features by training the models in a multiclass multilabel scenario. This results in an improved performance in the classification of tuberculosis as opposed to training from a randomly initialized settings. In other words, we have proposed a better way for training in a data constrained setting such as the healthcare sector.
{"title":"Deep Learning Models for Tuberculosis Detection from Chest X-ray Images","authors":"Quang H. Nguyen, Binh P. Nguyen, S. D. Dao, Balagopal Unnikrishnan, R. Dhingra, Savitha Rani Ravichandran, Sravani Satpathy, Nirmal Raja Palaparthi, M. Chua","doi":"10.1109/ICT.2019.8798798","DOIUrl":"https://doi.org/10.1109/ICT.2019.8798798","url":null,"abstract":"This paper explores the usefulness of transfer learning on medical imaging for tuberculosis detection. We show an improved method for transfer learning over the regular method of using ImageNet weights. We also discover that the low-level features from ImageNet weights are not useful for imaging tasks for modalities like X-rays and also propose a new method for obtaining low level features by training the models in a multiclass multilabel scenario. This results in an improved performance in the classification of tuberculosis as opposed to training from a randomly initialized settings. In other words, we have proposed a better way for training in a data constrained setting such as the healthcare sector.","PeriodicalId":127412,"journal":{"name":"2019 26th International Conference on Telecommunications (ICT)","volume":"42 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133042279","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 : 2019-04-01DOI: 10.1109/ICT.2019.8798789
Muhammad Usman Sheikh, K. Ruttik, R. Jäntti
The main aim of this paper is to compare the performance of a cellular network using higher order sectorization in a horizontal domain, vertical sectorization, and super cell configuration. The urban macrocellular environment from the city of Helsinki is targeted, and 28 GHz frequency is used as the frequency of operation. Conventional three sector site deployment scenario is also included for reference. The comparative analysis is conducted from different dimensions, and the performance metrics considered in this study includes the SINR, the inner sector traffic share, server dominance with 3 dB overlapping window, and the spectral efficiency of the system. This research work is carried out by doing 3D ray tracing simulations utilizing “sAGA”, a MATLAB based 3D ray tracing tool. It is found more complicated to find the optimal antenna configuration for vertical sectorization and super cell configuration in comparison with higher order sectorization. It is also established from the acquired results that the higher order sectorization is an easy approach for enhancing the cell capacity compared with vertical sectorization and super cell configuration. Higher order sectorization provides a spectral efficiency gain of around 96.7%, whereas the relative spectral efficiency gain of vertical sectorization and super cell configuration is limited to 62.8% and 10.6%, respectively, with respect to three sector site deployment.
{"title":"Performance Analysis of Vertical and Higher Order Sectorization in Urban Environment at 28 GHz","authors":"Muhammad Usman Sheikh, K. Ruttik, R. Jäntti","doi":"10.1109/ICT.2019.8798789","DOIUrl":"https://doi.org/10.1109/ICT.2019.8798789","url":null,"abstract":"The main aim of this paper is to compare the performance of a cellular network using higher order sectorization in a horizontal domain, vertical sectorization, and super cell configuration. The urban macrocellular environment from the city of Helsinki is targeted, and 28 GHz frequency is used as the frequency of operation. Conventional three sector site deployment scenario is also included for reference. The comparative analysis is conducted from different dimensions, and the performance metrics considered in this study includes the SINR, the inner sector traffic share, server dominance with 3 dB overlapping window, and the spectral efficiency of the system. This research work is carried out by doing 3D ray tracing simulations utilizing “sAGA”, a MATLAB based 3D ray tracing tool. It is found more complicated to find the optimal antenna configuration for vertical sectorization and super cell configuration in comparison with higher order sectorization. It is also established from the acquired results that the higher order sectorization is an easy approach for enhancing the cell capacity compared with vertical sectorization and super cell configuration. Higher order sectorization provides a spectral efficiency gain of around 96.7%, whereas the relative spectral efficiency gain of vertical sectorization and super cell configuration is limited to 62.8% and 10.6%, respectively, with respect to three sector site deployment.","PeriodicalId":127412,"journal":{"name":"2019 26th International Conference on Telecommunications (ICT)","volume":"3 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123411339","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 : 2019-04-01DOI: 10.1109/ICT.2019.8798821
P. Haigh, A. Burton, Zabih Ghassemlooy, I. Darwazeh
In this paper we experimentally demonstrate, for the first time, a simplified co-equalisation for imaging multiple-input multiple-output based visible light communication systems. We show that in such systems, where all channels have similar magnitude responses, an equaliser trained on a single channel produces coefficients that may be used in the form of a look-up table to equalise the remaining channels without the need for explicit or bespoke training. The system demonstrated is based on the fast-orthogonal frequency division multiplexing based on pulse amplitude modulation scheme to improve the spectral efficiency, where a data rate of 80 Mb/s is achieved using four light-emitting diodes, each of a 4 MHz raw bandwidth. We show that the reported system performance closely matches that of the traditional and more computationally complex system in terms of bit-error rate.
{"title":"Visible Light Communications: Simplified Co-Equalisation of Fast OFDM in a Multiple-Input Multiple-Output Configuration","authors":"P. Haigh, A. Burton, Zabih Ghassemlooy, I. Darwazeh","doi":"10.1109/ICT.2019.8798821","DOIUrl":"https://doi.org/10.1109/ICT.2019.8798821","url":null,"abstract":"In this paper we experimentally demonstrate, for the first time, a simplified co-equalisation for imaging multiple-input multiple-output based visible light communication systems. We show that in such systems, where all channels have similar magnitude responses, an equaliser trained on a single channel produces coefficients that may be used in the form of a look-up table to equalise the remaining channels without the need for explicit or bespoke training. The system demonstrated is based on the fast-orthogonal frequency division multiplexing based on pulse amplitude modulation scheme to improve the spectral efficiency, where a data rate of 80 Mb/s is achieved using four light-emitting diodes, each of a 4 MHz raw bandwidth. We show that the reported system performance closely matches that of the traditional and more computationally complex system in terms of bit-error rate.","PeriodicalId":127412,"journal":{"name":"2019 26th International Conference on Telecommunications (ICT)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126172286","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 : 2019-04-01DOI: 10.1109/ICT.2019.8798766
A. Mokh, M. Hélard, M. Crussiére
Space Shift Keying is a MIMO transmission scheme that has been recently studied as a promising solution for low computational complexity devices. Such a scheme is based on the concept of spatial modulations (SM) where the information is mapped to the index of the transmit (resp. the receive) antenna. When only one antenna is used per symbol duration, an SSK symbol is able to transmit base 2 log of the number of transmit antenna ($N_{t}$). An extended version of the conventional SSK scheme, referred to as Extended SSK (ESSK) has been recently proposed. The proposed technique allows the overall spectral efficiency to be increased such that the total amount of bits reaches $N_{t}$ instead of $log_{2}(N_{t})$ in conventional approaches. In this paper, we evaluated the performance of ESSK scheme with different detection strategies. Analytical results have been also validated through simulations.
{"title":"Extended Space Shift Keying Modulation With Different Receiver Strategies","authors":"A. Mokh, M. Hélard, M. Crussiére","doi":"10.1109/ICT.2019.8798766","DOIUrl":"https://doi.org/10.1109/ICT.2019.8798766","url":null,"abstract":"Space Shift Keying is a MIMO transmission scheme that has been recently studied as a promising solution for low computational complexity devices. Such a scheme is based on the concept of spatial modulations (SM) where the information is mapped to the index of the transmit (resp. the receive) antenna. When only one antenna is used per symbol duration, an SSK symbol is able to transmit base 2 log of the number of transmit antenna ($N_{t}$). An extended version of the conventional SSK scheme, referred to as Extended SSK (ESSK) has been recently proposed. The proposed technique allows the overall spectral efficiency to be increased such that the total amount of bits reaches $N_{t}$ instead of $log_{2}(N_{t})$ in conventional approaches. In this paper, we evaluated the performance of ESSK scheme with different detection strategies. Analytical results have been also validated through simulations.","PeriodicalId":127412,"journal":{"name":"2019 26th International Conference on Telecommunications (ICT)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125647271","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 : 2019-04-01DOI: 10.1109/ICT.2019.8798783
Gabriel Mittag, S. Möller
In this paper, we propose to use spectral entropy distance as a new measure for objective quality estimations of noisy speech. While the perceived quality estimation of a transmitted speech signal under background noise is fairly straight forward, the estimation of noise on active speech is more complex. For example, an increase in loudness can be confused as noise by common quality measures. Also, other distortions, such as interruptions due to packet loss, can decrease the energy in the degraded signal and thus lead to an underestimation of the noisiness. This is especially critical when the noise is only present during active speech segments, as it is the case for quantization noise caused by low bitrate codecs or voice activity detections at the receiver side. The spectral entropy, however, only considers the frequency composition of a signal and does not depend on the signal energy. Therefore, it gives a robust measure of how noisy a signal is in the presence of active speech. In our experiments, we trained a prediction model based on the spectral entropy and obtained excellent prediction results that show that the spectral entropy distance is indeed a useful tool for the quality estimation of noisy speech.
{"title":"Quality Estimation of Noisy Speech Using Spectral Entropy Distance","authors":"Gabriel Mittag, S. Möller","doi":"10.1109/ICT.2019.8798783","DOIUrl":"https://doi.org/10.1109/ICT.2019.8798783","url":null,"abstract":"In this paper, we propose to use spectral entropy distance as a new measure for objective quality estimations of noisy speech. While the perceived quality estimation of a transmitted speech signal under background noise is fairly straight forward, the estimation of noise on active speech is more complex. For example, an increase in loudness can be confused as noise by common quality measures. Also, other distortions, such as interruptions due to packet loss, can decrease the energy in the degraded signal and thus lead to an underestimation of the noisiness. This is especially critical when the noise is only present during active speech segments, as it is the case for quantization noise caused by low bitrate codecs or voice activity detections at the receiver side. The spectral entropy, however, only considers the frequency composition of a signal and does not depend on the signal energy. Therefore, it gives a robust measure of how noisy a signal is in the presence of active speech. In our experiments, we trained a prediction model based on the spectral entropy and obtained excellent prediction results that show that the spectral entropy distance is indeed a useful tool for the quality estimation of noisy speech.","PeriodicalId":127412,"journal":{"name":"2019 26th International Conference on Telecommunications (ICT)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121186894","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 : 2019-04-01DOI: 10.1109/ICT.2019.8798830
I. Lavrenyuk, A. Ovsyannikova, S. Zavjalov, S. Volvenko, S. Makarov
Numerous works are dedicated to Faster-than-Nyquist (FTN) signaling providing symbol rate higher than “Nyquist limit” without energy losses. It is necessary to use infinite pulses or pulses with rather long duration for FTN signaling. Using limited duration of FTN pulses allows to simplify the structure of transceiver but causes challenges with measurement of spectral efficiency. Finite time optimal pulses with controlled level of intersymbol interference (ISI) may be used for FTN signaling. In this work it is proposed to solve optimization problem taking into account limitation on Euclidean distance between different realizations of two random FTN signals. Obtained optimal FTN signals provide the gain in energy efficiency about 2 dB and 4 times higher spectral efficiency comparing to the known spectrally efficient signals based on RRC pulses.
{"title":"Improving Energy Efficiency of Finite Time FTN Pulses Detection by Choosing Optimal Envelope Shape","authors":"I. Lavrenyuk, A. Ovsyannikova, S. Zavjalov, S. Volvenko, S. Makarov","doi":"10.1109/ICT.2019.8798830","DOIUrl":"https://doi.org/10.1109/ICT.2019.8798830","url":null,"abstract":"Numerous works are dedicated to Faster-than-Nyquist (FTN) signaling providing symbol rate higher than “Nyquist limit” without energy losses. It is necessary to use infinite pulses or pulses with rather long duration for FTN signaling. Using limited duration of FTN pulses allows to simplify the structure of transceiver but causes challenges with measurement of spectral efficiency. Finite time optimal pulses with controlled level of intersymbol interference (ISI) may be used for FTN signaling. In this work it is proposed to solve optimization problem taking into account limitation on Euclidean distance between different realizations of two random FTN signals. Obtained optimal FTN signals provide the gain in energy efficiency about 2 dB and 4 times higher spectral efficiency comparing to the known spectrally efficient signals based on RRC pulses.","PeriodicalId":127412,"journal":{"name":"2019 26th International Conference on Telecommunications (ICT)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126831142","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}
Non-orthogonal multiple access (NOMA) based cooperative opportunistic multicast scheme uses the efficient relay selection range (ERSR) with a fixed radius to select user relay (UR). This results in UR redundancy, especially in the cell centre with high density of candidate UR. Coverage efficiency, defined as the ratio of the number of successful users to that of URs, is low. Aiming at this problem, a range division user relay selection scheme (termed as RDUR) is proposed in this paper. Firstly, it divides the circular coverage range of base station into several continuous annular areas (AAs). Secondly, different AAs are allocated different ERSRs (i.e., the radius of ERSR is different), which decides the width of AA. Lastly, the ERSR set that optimizes system coverage efficiency is used to perform UR selection. From simulation results, through RDUR, coverage efficiency increases by at least 28%, even though capacity efficiency decreases by 6%.
{"title":"An Enhanced Relay Selection Scheme for NOMA-based Cooperative Opportunistic Multicast Scheme","authors":"Yufang Zhang, Xiaoxiang Wang, Dongyu Wang, Qiang Zhao, Yibo Zhang","doi":"10.1109/ICT.2019.8798861","DOIUrl":"https://doi.org/10.1109/ICT.2019.8798861","url":null,"abstract":"Non-orthogonal multiple access (NOMA) based cooperative opportunistic multicast scheme uses the efficient relay selection range (ERSR) with a fixed radius to select user relay (UR). This results in UR redundancy, especially in the cell centre with high density of candidate UR. Coverage efficiency, defined as the ratio of the number of successful users to that of URs, is low. Aiming at this problem, a range division user relay selection scheme (termed as RDUR) is proposed in this paper. Firstly, it divides the circular coverage range of base station into several continuous annular areas (AAs). Secondly, different AAs are allocated different ERSRs (i.e., the radius of ERSR is different), which decides the width of AA. Lastly, the ERSR set that optimizes system coverage efficiency is used to perform UR selection. From simulation results, through RDUR, coverage efficiency increases by at least 28%, even though capacity efficiency decreases by 6%.","PeriodicalId":127412,"journal":{"name":"2019 26th International Conference on Telecommunications (ICT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132354996","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 : 2019-04-01DOI: 10.1109/ICT.2019.8798851
Ghassan Alnwaimi, H. Boujemaa
In this article, we optimize packet length for cooperative systems. Packet length optimization allows to increase data rates. Our analysis is valid for dual hop and multihop relaying. Two adaptation protocols are studied where the adaptation of packet and Modulation and Coding Scheme (MCS) are made with respect to Average Signal to Noise Ratio (ASNR) or instantaneous SNR (ISNR). Results show that packet length optimization allows 1.5-2.5 dB gain.
{"title":"Optimal Packet Length for Cooperative Systems","authors":"Ghassan Alnwaimi, H. Boujemaa","doi":"10.1109/ICT.2019.8798851","DOIUrl":"https://doi.org/10.1109/ICT.2019.8798851","url":null,"abstract":"In this article, we optimize packet length for cooperative systems. Packet length optimization allows to increase data rates. Our analysis is valid for dual hop and multihop relaying. Two adaptation protocols are studied where the adaptation of packet and Modulation and Coding Scheme (MCS) are made with respect to Average Signal to Noise Ratio (ASNR) or instantaneous SNR (ISNR). Results show that packet length optimization allows 1.5-2.5 dB gain.","PeriodicalId":127412,"journal":{"name":"2019 26th International Conference on Telecommunications (ICT)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128140880","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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