Pub Date : 2016-01-19DOI: 10.4108/eai.19-1-2016.150996
S. Mao, Honggang Wang, A. Striegel, Kewei Sha
This special issue consists of a collection of papers on the latest advances in cognitive, cellular, and mobile networks. It consists of the top papers selected and extended from The Cognitive, Cellular, and Mobile Networks (CCM) Track of 24th International Conference on Computer Communications and Networks (ICCCN 2015), held in Las Vegas, Nevada, USA. August 3 – August 6, 2015, as well as open call submissions. We hope that this SI will serve as good references for engineers, scientists, researchers, and academics in the field of Cognitive, Cellular, and Mobile Networks.
{"title":"Guest Editorial: Special Issue on Cognitive, Cellular and Mobile Networks","authors":"S. Mao, Honggang Wang, A. Striegel, Kewei Sha","doi":"10.4108/eai.19-1-2016.150996","DOIUrl":"https://doi.org/10.4108/eai.19-1-2016.150996","url":null,"abstract":"This special issue consists of a collection of papers on the latest advances in cognitive, cellular, and mobile networks. It consists of the top papers selected and extended from The Cognitive, Cellular, and Mobile Networks (CCM) Track of 24th International Conference on Computer Communications and Networks (ICCCN 2015), held in Las Vegas, Nevada, USA. August 3 – August 6, 2015, as well as open call submissions. We hope that this SI will serve as good references for engineers, scientists, researchers, and academics in the field of Cognitive, Cellular, and Mobile Networks.","PeriodicalId":288158,"journal":{"name":"EAI Endorsed Trans. Wirel. Spectr.","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125655717","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 : 2016-01-19DOI: 10.4108/eai.19-1-2016.151000
Haibin Zhang, Jiajia Liu, Cheng Zhao
We propose a distance based method for the outlier detection of body sensor networks. Firstly, we use a Kernel Density Estimation (KDE) to calculate the probability of the distance to k nearest neighbors for diagnosed data. If the probability is less than a threshold, and the distance of this data to its left and right neighbors is greater than a pre-defined value, the diagnosed data is decided as an outlier. Further, we formalize a sliding window based method to improve the outlier detection performance. Finally, to estimate the KDE by training sensor readings with errors, we introduce a Hidden Markov Model (HMM) based method to estimate the most probable ground truth values which have the maximum probability to produce the training data. Simulation results show that the proposed method possesses a good detection accuracy with a low false alarm rate. Received on 19 September 2015; accepted on 24 November 2015; published on 19 January 2016
{"title":"Distance Based Method for Outlier Detection of Body Sensor Networks","authors":"Haibin Zhang, Jiajia Liu, Cheng Zhao","doi":"10.4108/eai.19-1-2016.151000","DOIUrl":"https://doi.org/10.4108/eai.19-1-2016.151000","url":null,"abstract":"We propose a distance based method for the outlier detection of body sensor networks. Firstly, we use a Kernel Density Estimation (KDE) to calculate the probability of the distance to k nearest neighbors for diagnosed data. If the probability is less than a threshold, and the distance of this data to its left and right neighbors is greater than a pre-defined value, the diagnosed data is decided as an outlier. Further, we formalize a sliding window based method to improve the outlier detection performance. Finally, to estimate the KDE by training sensor readings with errors, we introduce a Hidden Markov Model (HMM) based method to estimate the most probable ground truth values which have the maximum probability to produce the training data. Simulation results show that the proposed method possesses a good detection accuracy with a low false alarm rate. Received on 19 September 2015; accepted on 24 November 2015; published on 19 January 2016","PeriodicalId":288158,"journal":{"name":"EAI Endorsed Trans. Wirel. Spectr.","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127916566","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 : 2016-01-19DOI: 10.4108/eai.19-1-2016.150999
V. Balaji, S. Anand, C. Hota, G. Raghurama
In this paper we present a Cooperative Spectrum Sensing (CSS) algorithm for Cognitive Radios (CR) based on IEEE 802.22 Wireless Regional Area Network (WRAN) standard. The core objective is to improve cooperative sensing efficiency which specifies how fast a decision can be reached in each round of cooperation (iteration) to sense an appropriate number of channels/bands (i.e. 86 channels of 7MHz bandwidth as per IEEE 802.22) within a time constraint (channel sensing time). To meet this objective, we have developed CSS algorithm using unsupervised K-means clustering classification approach. The received energy level of each Secondary User (SU) is considered as the parameter for determining channel availability. The performance of proposed algorithm is quantified in terms of detection accuracy, training and classification delay time. Further, the detection accuracy of our proposed scheme meets the requirement of IEEE 802.22 WRAN with the target probability of falsealrm as 0.1. All the simulations are carried out using Matlab tool. Received on XXXX; accepted on XXXX; published on XXXX
{"title":"Spectrum Hole Identification in IEEE 802.22 WRAN using Unsupervised Learning","authors":"V. Balaji, S. Anand, C. Hota, G. Raghurama","doi":"10.4108/eai.19-1-2016.150999","DOIUrl":"https://doi.org/10.4108/eai.19-1-2016.150999","url":null,"abstract":"In this paper we present a Cooperative Spectrum Sensing (CSS) algorithm for Cognitive Radios (CR) based on IEEE 802.22 Wireless Regional Area Network (WRAN) standard. The core objective is to improve cooperative sensing efficiency which specifies how fast a decision can be reached in each round of cooperation (iteration) to sense an appropriate number of channels/bands (i.e. 86 channels of 7MHz bandwidth as per IEEE 802.22) within a time constraint (channel sensing time). To meet this objective, we have developed CSS algorithm using unsupervised K-means clustering classification approach. The received energy level of each Secondary User (SU) is considered as the parameter for determining channel availability. The performance of proposed algorithm is quantified in terms of detection accuracy, training and classification delay time. Further, the detection accuracy of our proposed scheme meets the requirement of IEEE 802.22 WRAN with the target probability of falsealrm as 0.1. All the simulations are carried out using Matlab tool. Received on XXXX; accepted on XXXX; published on XXXX","PeriodicalId":288158,"journal":{"name":"EAI Endorsed Trans. Wirel. Spectr.","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121108304","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 : 2015-12-22DOI: 10.4108/eai.14-10-2015.2261604
Jingzhen Li, Yuhang Liu, Ze-dong Nie
Human body communication (HBC), which uses the human body as a propagation medium, is a promising communication technology in brain-controlled functional electrical stimulation (FES). In order to study the propagation characteristics of HBC channel between intra-brain and body implant, a 45kg pig was employed as an experimental subject in this paper. The channel characteristics of amplitude and group delay were investigated by vector network analyzer (VNA) over different frequencies (from 0.3MHz to 200MHz). A battery powered transmitter and receiver were adopted to study the influence of electrode size and type. Experimental results show that the optimal HBC frequency for brain-controlled FES applications is from 5MHz to 50MHz. Electrode size have little impact on signal transmission in body channel. In addition, signal transmission is insensitive with the electrode type.
{"title":"Propagation Characteristics of Human Body Communication in Brain-Controlled Functional Electrical Stimulation","authors":"Jingzhen Li, Yuhang Liu, Ze-dong Nie","doi":"10.4108/eai.14-10-2015.2261604","DOIUrl":"https://doi.org/10.4108/eai.14-10-2015.2261604","url":null,"abstract":"Human body communication (HBC), which uses the human body as a propagation medium, is a promising communication technology in brain-controlled functional electrical stimulation (FES). In order to study the propagation characteristics of HBC channel between intra-brain and body implant, a 45kg pig was employed as an experimental subject in this paper. The channel characteristics of amplitude and group delay were investigated by vector network analyzer (VNA) over different frequencies (from 0.3MHz to 200MHz). A battery powered transmitter and receiver were adopted to study the influence of electrode size and type. Experimental results show that the optimal HBC frequency for brain-controlled FES applications is from 5MHz to 50MHz. Electrode size have little impact on signal transmission in body channel. In addition, signal transmission is insensitive with the electrode type.","PeriodicalId":288158,"journal":{"name":"EAI Endorsed Trans. Wirel. Spectr.","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121623460","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 : 2015-12-22DOI: 10.4108/eai.14-10-2015.2261786
Qiao Cheng, A. Alomainy, Y. Hao
This paper investigates the effect of antenna directivity on the accuracy of fingerprint-based indoor localisation systems. The proposed method adopts received signal strength which was derived by ray tracing techniques applied to 3D indoor model for location determination. Antennas with different radiation patterns and different orientations are implemented for comparative study. Numerical results show that, by utilizing the geometry of the indoor environment, directional antennas can help increase the uniqueness of the fingerprints and hence improve the localisation accuracy.
{"title":"Effect of Antenna Directivity on the Accuracy of Fingerprint-based Localisation","authors":"Qiao Cheng, A. Alomainy, Y. Hao","doi":"10.4108/eai.14-10-2015.2261786","DOIUrl":"https://doi.org/10.4108/eai.14-10-2015.2261786","url":null,"abstract":"This paper investigates the effect of antenna directivity on the accuracy of fingerprint-based indoor localisation systems. The proposed method adopts received signal strength which was derived by ray tracing techniques applied to 3D indoor model for location determination. Antennas with different radiation patterns and different orientations are implemented for comparative study. Numerical results show that, by utilizing the geometry of the indoor environment, directional antennas can help increase the uniqueness of the fingerprints and hence improve the localisation accuracy.","PeriodicalId":288158,"journal":{"name":"EAI Endorsed Trans. Wirel. Spectr.","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121118808","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 : 2015-12-22DOI: 10.4108/eai.14-10-2015.2261635
Nishtha Chopra, A. Alomainy, Mike Philpott
The elegant concept of Nanocommunication at terahertz (THz) frequency is proposed with its main focus on investigating electromagnetic material properties of synthesized Dermis layer of the skin via THz-Time Domain Spectroscopy (TDS). The paper highlights the study of human skin and cell culture. Methods are applied to synthesize collagen and measurements are carried out in the THz band ranging from 0.1-3THz. The results are further proposed for Nanonetwork channel propagation models and transmission schemes based on THz electromagnetic communication.
{"title":"Investigating Electromagnetic Material Properties of Collagen at THz for Health Monitoring Applications","authors":"Nishtha Chopra, A. Alomainy, Mike Philpott","doi":"10.4108/eai.14-10-2015.2261635","DOIUrl":"https://doi.org/10.4108/eai.14-10-2015.2261635","url":null,"abstract":"The elegant concept of Nanocommunication at terahertz (THz) frequency is proposed with its main focus on investigating electromagnetic material properties of synthesized Dermis layer of the skin via THz-Time Domain Spectroscopy (TDS). The paper highlights the study of human skin and cell culture. Methods are applied to synthesize collagen and measurements are carried out in the THz band ranging from 0.1-3THz. The results are further proposed for Nanonetwork channel propagation models and transmission schemes based on THz electromagnetic communication.","PeriodicalId":288158,"journal":{"name":"EAI Endorsed Trans. Wirel. Spectr.","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131217638","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 : 2015-12-22DOI: 10.4108/eai.14-10-2015.2261777
TiongHoo Lim, A. H. Abdullah
The applications of wireless sensing technology in health monitoring and diagnosis have increased dramatically. These applications have improved the quality of life and allowed medical practitioners to access patients information remotely and timely. However, the wireless communication between the sensing devices can be interfered by body movement. To guarantee data availability and recognition accuracy, each node has to either utilize a high transmission power or involve a packet retransmission mechanism. Increasing the transmission power of a sensor node increases energy overheads and communication range. Larger communication range can produce additional interference with other nodes on the body. Packet retransmission, on the other hand, complicates on-body sensor nodes' MAC layer and increases energy overheads. In this paper, we propose an Adaptive Medium Access Control protocol to improve the delivery rate by duty-cycling the transmission radio according to the predicted activities. We perform extensive experiments to evaluate and compare the protocol against B-MAC, OMAC and OTP using real sensor nodes attached to 50 participants. The results show that the proposed system can achieve a higher packet delivery than B-MAC, OMAC and OTP without additional energy consumption
{"title":"Real-time Adaptive Medium Access Control Protocol to Improve Transmission Efficiency in Body Sensor Networks","authors":"TiongHoo Lim, A. H. Abdullah","doi":"10.4108/eai.14-10-2015.2261777","DOIUrl":"https://doi.org/10.4108/eai.14-10-2015.2261777","url":null,"abstract":"The applications of wireless sensing technology in health monitoring and diagnosis have increased dramatically. These applications have improved the quality of life and allowed medical practitioners to access patients information remotely and timely. However, the wireless communication between the sensing devices can be interfered by body movement. To guarantee data availability and recognition accuracy, each node has to either utilize a high transmission power or involve a packet retransmission mechanism. Increasing the transmission power of a sensor node increases energy overheads and communication range. Larger communication range can produce additional interference with other nodes on the body. Packet retransmission, on the other hand, complicates on-body sensor nodes' MAC layer and increases energy overheads. In this paper, we propose an Adaptive Medium Access Control protocol to improve the delivery rate by duty-cycling the transmission radio according to the predicted activities. We perform extensive experiments to evaluate and compare the protocol against B-MAC, OMAC and OTP using real sensor nodes attached to 50 participants. The results show that the proposed system can achieve a higher packet delivery than B-MAC, OMAC and OTP without additional energy consumption","PeriodicalId":288158,"journal":{"name":"EAI Endorsed Trans. Wirel. Spectr.","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121097452","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}
Cognitive radio is an emerging technology to deal with the scarcity and requirement of radio spectrum by dynamically assigning spectrum to unlicensed user. This revolutionary technology shifts the paradigm in the wireless system design by allowing unlicensed user the ability to sense, adapt and share the dynamic spectrum. Cognitive radio technology applied to different networks and applications ranging from wireless to public safety, smart grid, medical, relay and cellular applications to increase the throughput and spectrum efficiency of network. Among these applications, cognitive relay networks is one of the famous application where cognitive radio technology is applied. Cognitive relay network increases the throughput of network by reducing the complete path loss and also by ensuring cooperation among secondary users and cooperation among primary and secondary users. In this paper, our aim is to provide a survey on cognitive relay network. We also provide a detailed review on existing schemes in cognitive relay networks on the basis of relaying protocol, relay cooperation and channel model. Received on 20 June 2015; accepted on 25 June 2015; published on 16 July 2015
{"title":"Cognitive Relay Networks: A Comprehensive Survey","authors":"Ayesha Naeem, M. H. Rehmani","doi":"10.4108/ws.2015.3.e5","DOIUrl":"https://doi.org/10.4108/ws.2015.3.e5","url":null,"abstract":"Cognitive radio is an emerging technology to deal with the scarcity and requirement of radio spectrum by dynamically assigning spectrum to unlicensed user. This revolutionary technology shifts the paradigm in the wireless system design by allowing unlicensed user the ability to sense, adapt and share the dynamic spectrum. Cognitive radio technology applied to different networks and applications ranging from wireless to public safety, smart grid, medical, relay and cellular applications to increase the throughput and spectrum efficiency of network. Among these applications, cognitive relay networks is one of the famous application where cognitive radio technology is applied. Cognitive relay network increases the throughput of network by reducing the complete path loss and also by ensuring cooperation among secondary users and cooperation among primary and secondary users. In this paper, our aim is to provide a survey on cognitive relay network. We also provide a detailed review on existing schemes in cognitive relay networks on the basis of relaying protocol, relay cooperation and channel model. Received on 20 June 2015; accepted on 25 June 2015; published on 16 July 2015","PeriodicalId":288158,"journal":{"name":"EAI Endorsed Trans. Wirel. Spectr.","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116017659","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}
CR and PU hidden terminals in multi-channel Cognitive MAC protocols result in increased packet drops. This is due to inefficient node synchronization with existing “Control Channel” design. To date, In-band and Out-of-band CCC based MAC protocols are proposed to avoid PU and CR hidden terminals. But, In-band CCC based CR-MAC protocols cannot efficiently resolve the hidden terminal packet drops due to imperfect node synchronization whereas out-of-band CCC based MAC is vulnerable to intruder attacks and channel saturation. To overcome this, we propose an Interference-aware hybrid CCC cognitive MAC protocol with directional RTS/CTS and data transmission. In addition, adaptive power control algorithm is proposed to avoid interference to hidden PU and CR nodes at edge coverage area. Experimental results show that proposed Hybrid cognitive MAC protocol has increased link aggregate throughput and reduced cognitive control overhead in comparison with existing CCC based CR-MAC protocols.
{"title":"Interference-Aware Hybrid MAC protocol for Cognitive Radio Ad-Hoc Networks with Directional Antennas","authors":"Satish Anamalamudi, Minglu Jin, J. Kim","doi":"10.4108/ws.1.3.e1","DOIUrl":"https://doi.org/10.4108/ws.1.3.e1","url":null,"abstract":"CR and PU hidden terminals in multi-channel Cognitive MAC protocols result in increased packet drops. This is due to inefficient node synchronization with existing “Control Channel” design. To date, In-band and Out-of-band CCC based MAC protocols are proposed to avoid PU and CR hidden terminals. But, In-band CCC based CR-MAC protocols cannot efficiently resolve the hidden terminal packet drops due to imperfect node synchronization whereas out-of-band CCC based MAC is vulnerable to intruder attacks and channel saturation. To overcome this, we propose an Interference-aware hybrid CCC cognitive MAC protocol with directional RTS/CTS and data transmission. In addition, adaptive power control algorithm is proposed to avoid interference to hidden PU and CR nodes at edge coverage area. Experimental results show that proposed Hybrid cognitive MAC protocol has increased link aggregate throughput and reduced cognitive control overhead in comparison with existing CCC based CR-MAC protocols.","PeriodicalId":288158,"journal":{"name":"EAI Endorsed Trans. Wirel. Spectr.","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128749593","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}
Future mobile communication networks will require enhanced network efficiency and reduced system overhead. Research on Blind Interference Alignment and Topological Interference Management (TIM) has shown that optimal Degrees of Freedom can be achieved, in the absence of Channel State Information at the transmitters. Moreover, the recently emerged Non-Orthogonal Multiple Access (NOMA) scheme suggests a different multiple access approach, compared to the orthogonal methods employed in 4G, resulting in high capacity gains. Our contribution is a hybrid TIM-NOMA scheme in K -user cells, where users are divided into T groups. By superimposing users in the power domain, we introduce a two-stage decoding process, managing “inter-group” interference based on the TIM principles, and “intra-group” interference based on Successful Interference Cancellation, as proposed by NOMA. We show that the hybrid scheme can improve the sum rate by at least 100% compared to Time Division Multiple Access, for high SNR values.
{"title":"A hybrid TIM-NOMA scheme for the Broadcast Channel","authors":"Vaia Kalokidou, O. Johnson, R. Piechocki","doi":"10.4108/WS.1.3.E4","DOIUrl":"https://doi.org/10.4108/WS.1.3.E4","url":null,"abstract":"Future mobile communication networks will require enhanced network efficiency and reduced system overhead. Research on Blind Interference Alignment and Topological Interference Management (TIM) has shown that optimal Degrees of Freedom can be achieved, in the absence of Channel State Information at the transmitters. Moreover, the recently emerged Non-Orthogonal Multiple Access (NOMA) scheme suggests a different multiple access approach, compared to the orthogonal methods employed in 4G, resulting in high capacity gains. Our contribution is a hybrid TIM-NOMA scheme in K -user cells, where users are divided into T groups. By superimposing users in the power domain, we introduce a two-stage decoding process, managing “inter-group” interference based on the TIM principles, and “intra-group” interference based on Successful Interference Cancellation, as proposed by NOMA. We show that the hybrid scheme can improve the sum rate by at least 100% compared to Time Division Multiple Access, for high SNR values.","PeriodicalId":288158,"journal":{"name":"EAI Endorsed Trans. Wirel. Spectr.","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115335514","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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