In this paper, we investigate the statistical characteristics of the three dimensional (3D) multiple- input multiple-output (MIMO) channels and their dependency on the dynamic range in channel impulse responses (CIRs). Our study is based on empirical results obtained from the 3D MIMO channel measurement campaigns at 6 GHz in a typical urban macrocell outdoor-to-indoor scenario. The space-alternating generalized expectation-maximization (SAGE) algorithm is employed to estimate parameters of multipath components from the measured data. The measured data is divided into groups based on the dynamic range in the measured CIRs. The second-order statistics in time and spatial domains are calculated for each group. It is found that the channel statistics shows strong dependency on the dynamic range in the measured CIRs.
本文研究了三维(3D)多输入多输出(MIMO)信道的统计特性及其与信道脉冲响应(CIRs)动态范围的关系。我们的研究基于典型城市宏蜂窝室内外场景下6 GHz 3D MIMO信道测量活动的实证结果。采用空间交替广义期望最大化(SAGE)算法从实测数据中估计多径分量的参数。根据所测红外光谱的动态范围对测量数据进行分组。计算每组的时间和空间二阶统计量。结果表明，通道统计量对所测CIRs的动态范围有很强的依赖性。
{"title":"3D MIMO Channel Characteristics and Capacity Evaluation for Different Dynamic Ranges in Outdoor-to-Indoor Scenario for 6 GHz","authors":"Yuxiang Zhang, Lei Tian, Yawei Yu, Qingfang Zheng, Jian-hua Zhang, Yu Zhang","doi":"10.1109/VTCFall.2016.7880843","DOIUrl":"https://doi.org/10.1109/VTCFall.2016.7880843","url":null,"abstract":"In this paper, we investigate the statistical characteristics of the three dimensional (3D) multiple- input multiple-output (MIMO) channels and their dependency on the dynamic range in channel impulse responses (CIRs). Our study is based on empirical results obtained from the 3D MIMO channel measurement campaigns at 6 GHz in a typical urban macrocell outdoor-to-indoor scenario. The space-alternating generalized expectation-maximization (SAGE) algorithm is employed to estimate parameters of multipath components from the measured data. The measured data is divided into groups based on the dynamic range in the measured CIRs. The second-order statistics in time and spatial domains are calculated for each group. It is found that the channel statistics shows strong dependency on the dynamic range in the measured CIRs.","PeriodicalId":6484,"journal":{"name":"2016 IEEE 84th Vehicular Technology Conference (VTC-Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74746367","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 : 2016-09-01DOI: 10.1109/VTCFall.2016.7881011
Yunrui Li, John Q. Liu
The European Union (EU) emergency call (eCall) employs the GSM voice channel for vehicle emergency data transmission. However, fading statistics of the GSM voice channel after power control has not been discussed previously. This paper reports the power measurements for the end-to-end GSM voice channel with an in-vehicle system (IVS) transmitter in laboratory or on freeway. The data reveals that strong fading still exists in the GSMvoice channel after power control, which can cause severe packet loss and delay in the emergency call.
{"title":"Fading Statistics of Voice Channel for the European Union Emergency Call","authors":"Yunrui Li, John Q. Liu","doi":"10.1109/VTCFall.2016.7881011","DOIUrl":"https://doi.org/10.1109/VTCFall.2016.7881011","url":null,"abstract":"The European Union (EU) emergency call (eCall) employs the GSM voice channel for vehicle emergency data transmission. However, fading statistics of the GSM voice channel after power control has not been discussed previously. This paper reports the power measurements for the end-to-end GSM voice channel with an in-vehicle system (IVS) transmitter in laboratory or on freeway. The data reveals that strong fading still exists in the GSMvoice channel after power control, which can cause severe packet loss and delay in the emergency call.","PeriodicalId":6484,"journal":{"name":"2016 IEEE 84th Vehicular Technology Conference (VTC-Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72993400","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 : 2016-09-01DOI: 10.1109/VTCFall.2016.7881207
Lei Kong, Wei Xu, Hua Zhang, Chunming Zhao
White light-emitting diode (LED) consisting of red, green, blue, and amber chips (RGBA-LED) has recently been adopted as transmitter in visible light communication (VLC) systems. This paper proposed a reshaped orthogonal frequency division multiplexing (R- OFDM) scheme for RGBA-LED-based VLC systems. In the R- OFDM, the signal is adjusted by separation and biasing after clipping (BAC) operations for transmitting in RGBA-LED. Then, the biasing factor of BAC is derived according to the color mix ratio (CMR) of RGBA-LED. At the receiver, We develop a direct detection algorithm to recover the original data, and analyze its the theoretical bit error rate (BER). Furthermore, a lower bound of the BER is analyzed under high clipping ratio (CR) by using SNR upper bound. Finally, simulation results confirm our theoretical analysis and verify that R-OFDM outperforms the ACO-OFDM in term of BER.
{"title":"R-OFDM Transmission Scheme for Visible Light Communication Using RGBA-LED","authors":"Lei Kong, Wei Xu, Hua Zhang, Chunming Zhao","doi":"10.1109/VTCFall.2016.7881207","DOIUrl":"https://doi.org/10.1109/VTCFall.2016.7881207","url":null,"abstract":"White light-emitting diode (LED) consisting of red, green, blue, and amber chips (RGBA-LED) has recently been adopted as transmitter in visible light communication (VLC) systems. This paper proposed a reshaped orthogonal frequency division multiplexing (R- OFDM) scheme for RGBA-LED-based VLC systems. In the R- OFDM, the signal is adjusted by separation and biasing after clipping (BAC) operations for transmitting in RGBA-LED. Then, the biasing factor of BAC is derived according to the color mix ratio (CMR) of RGBA-LED. At the receiver, We develop a direct detection algorithm to recover the original data, and analyze its the theoretical bit error rate (BER). Furthermore, a lower bound of the BER is analyzed under high clipping ratio (CR) by using SNR upper bound. Finally, simulation results confirm our theoretical analysis and verify that R-OFDM outperforms the ACO-OFDM in term of BER.","PeriodicalId":6484,"journal":{"name":"2016 IEEE 84th Vehicular Technology Conference (VTC-Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75692508","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 : 2016-09-01DOI: 10.1109/VTCFall.2016.7881113
Takumi Takahashi, S. Ibi, S. Sampei
This paper proposes a normalized matched filter (MF) belief in Gaussian belief propagation (GaBP) detection especially for a large multiple-input multiple-output (L-MIMO) configuration where a base station (BS) has tens of antennas. In a massive MIMO channel where the BS has hundreds of antennas, damped GaBP is known to be an effective detector in terms of low computational complexity and its detection capability. However, in L- MIMO channels, GaBP is subject to ill convergence behavior of iterative detection due to lack of channel hardening effects obtained by massive number of receive antennas. To improve the convergence property, we investigate the MF belief, instead of a traditional log likelihood ratio (LLR) belief. Then, we propose the novel normalized MF belief according to instantaneous channel state. As a side effect of the normalization, a noise variance estimator is not necessary. Finally, we demonstrate the validity of the normalized MF belief with the aid of damped processing, in terms of suppression of bit error rate (BER) floor as well as approach to maximum likelihood detection (MLD) limit.
{"title":"On Normalization of Matched Filter Belief in GaBP for Large MIMO Detection","authors":"Takumi Takahashi, S. Ibi, S. Sampei","doi":"10.1109/VTCFall.2016.7881113","DOIUrl":"https://doi.org/10.1109/VTCFall.2016.7881113","url":null,"abstract":"This paper proposes a normalized matched filter (MF) belief in Gaussian belief propagation (GaBP) detection especially for a large multiple-input multiple-output (L-MIMO) configuration where a base station (BS) has tens of antennas. In a massive MIMO channel where the BS has hundreds of antennas, damped GaBP is known to be an effective detector in terms of low computational complexity and its detection capability. However, in L- MIMO channels, GaBP is subject to ill convergence behavior of iterative detection due to lack of channel hardening effects obtained by massive number of receive antennas. To improve the convergence property, we investigate the MF belief, instead of a traditional log likelihood ratio (LLR) belief. Then, we propose the novel normalized MF belief according to instantaneous channel state. As a side effect of the normalization, a noise variance estimator is not necessary. Finally, we demonstrate the validity of the normalized MF belief with the aid of damped processing, in terms of suppression of bit error rate (BER) floor as well as approach to maximum likelihood detection (MLD) limit.","PeriodicalId":6484,"journal":{"name":"2016 IEEE 84th Vehicular Technology Conference (VTC-Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75726842","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 : 2016-09-01DOI: 10.1109/VTCFall.2016.7881098
B. Mouhouche, Mohammed Al-Imari, D. Ansorregui
Recent studies have shown the potential performance gain of Non Uniform Constellations (NUC) compared to the conventional uniform constellations. NUC can be a promising candidate in 5G systems to increase the data throughput. In the literature, NUC is designed for a specific SNR value and propagation channel. However, in broadcast/multicast services, the received signal by different users will see independent and different channels. Hence, in this paper, we focus on the potential gain of NUC when jointly optimized for more than one propagation channel. In order to assess the gain, we propose an iterative algorithm to jointly optimize the NUC for different channel conditions. The resulting constellations are then compared to uniform constellation and single channel NUC. The simulation results show that the newly designed constellations outperform the classical single channel NUC across different channel conditions when the average performance (across different channels) is considered.
{"title":"Multichannel Design of Non Uniform Constellations for Broadcast/Multicast Services","authors":"B. Mouhouche, Mohammed Al-Imari, D. Ansorregui","doi":"10.1109/VTCFall.2016.7881098","DOIUrl":"https://doi.org/10.1109/VTCFall.2016.7881098","url":null,"abstract":"Recent studies have shown the potential performance gain of Non Uniform Constellations (NUC) compared to the conventional uniform constellations. NUC can be a promising candidate in 5G systems to increase the data throughput. In the literature, NUC is designed for a specific SNR value and propagation channel. However, in broadcast/multicast services, the received signal by different users will see independent and different channels. Hence, in this paper, we focus on the potential gain of NUC when jointly optimized for more than one propagation channel. In order to assess the gain, we propose an iterative algorithm to jointly optimize the NUC for different channel conditions. The resulting constellations are then compared to uniform constellation and single channel NUC. The simulation results show that the newly designed constellations outperform the classical single channel NUC across different channel conditions when the average performance (across different channels) is considered.","PeriodicalId":6484,"journal":{"name":"2016 IEEE 84th Vehicular Technology Conference (VTC-Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78742202","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 : 2016-09-01DOI: 10.1109/VTCFall.2016.7881209
W. S. Atoui, M. A. Salahuddin, W. Ajib, M. Boukadoum
The use of renewable energy at roadside units (RSUs) in vehicular ad hoc networks is a great alternative to the electric grid, since it lowers the carbon footprint, and the cost of deployment and maintenance. This paper describes a scheduler for serving vehicles by RSUs that use energy harvesting, with the aim to maximize the number of served vehicles. We start by defining an integer linear programming model for finding the optimal offline schedule. The model is shown to be NP-hard and hence we propose a greedy heuristic to solve it. We compare the optimal solution and near- optimal offline heuristic with an energy-efficient scheduler for RSUs. Our simulation results show that the proposed scheduler for energy harvesting RSUs can reduce the service delay of vehicles. It also provides good performance with respect to the percentage of served vehicles, in comparison to energy-efficient scheduler in grid-powered RSUs.
{"title":"Scheduling Energy Harvesting Roadside Units in Vehicular Ad Hoc Networks","authors":"W. S. Atoui, M. A. Salahuddin, W. Ajib, M. Boukadoum","doi":"10.1109/VTCFall.2016.7881209","DOIUrl":"https://doi.org/10.1109/VTCFall.2016.7881209","url":null,"abstract":"The use of renewable energy at roadside units (RSUs) in vehicular ad hoc networks is a great alternative to the electric grid, since it lowers the carbon footprint, and the cost of deployment and maintenance. This paper describes a scheduler for serving vehicles by RSUs that use energy harvesting, with the aim to maximize the number of served vehicles. We start by defining an integer linear programming model for finding the optimal offline schedule. The model is shown to be NP-hard and hence we propose a greedy heuristic to solve it. We compare the optimal solution and near- optimal offline heuristic with an energy-efficient scheduler for RSUs. Our simulation results show that the proposed scheduler for energy harvesting RSUs can reduce the service delay of vehicles. It also provides good performance with respect to the percentage of served vehicles, in comparison to energy-efficient scheduler in grid-powered RSUs.","PeriodicalId":6484,"journal":{"name":"2016 IEEE 84th Vehicular Technology Conference (VTC-Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77880515","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 : 2016-09-01DOI: 10.1109/VTCFall.2016.7881086
J. Vehmas, J. Jarvelainen, S. Nguyen, R. Naderpour, K. Haneda
Airport terminal is one of the indoor scenarios envisioned for mm-wave 5G deployment. In this paper, we characterize the propagation channel in the Helsinki airport at 15, 28, and 60 GHz bands by means of directional wideband channel sounding. The radio environment was characterized by studying the specular propagation paths, specular and diffuse power contributions, polarization, and the delay and angular spreads. All the studied metrics in different bands were compared and the frequency dependency was analyzed.
{"title":"Millimeter-Wave Channel Characterization at Helsinki Airport in the 15, 28, and 60 GHz Bands","authors":"J. Vehmas, J. Jarvelainen, S. Nguyen, R. Naderpour, K. Haneda","doi":"10.1109/VTCFall.2016.7881086","DOIUrl":"https://doi.org/10.1109/VTCFall.2016.7881086","url":null,"abstract":"Airport terminal is one of the indoor scenarios envisioned for mm-wave 5G deployment. In this paper, we characterize the propagation channel in the Helsinki airport at 15, 28, and 60 GHz bands by means of directional wideband channel sounding. The radio environment was characterized by studying the specular propagation paths, specular and diffuse power contributions, polarization, and the delay and angular spreads. All the studied metrics in different bands were compared and the frequency dependency was analyzed.","PeriodicalId":6484,"journal":{"name":"2016 IEEE 84th Vehicular Technology Conference (VTC-Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78176607","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 : 2016-09-01DOI: 10.1109/VTCFall.2016.7880942
Chaofeng Zhang, K. Ota, M. Dong
Mobile positioning technology is one of location-based services (LBS) which locates mobile devices and cooperative positioning is promising to increase its energy efficiency. The cooperative positioning, however, shares location information between the devices and users may be unwilling to provide their location information to others with additional energy consumption. In this paper, we propose a new positioning scheme using social networks, that motivates the users to participate in the cooperative positioning. Firstly, we define the social utility to indicate the strength of the social network relationship between two nodes, based on the number of mutual friends. Then, we formulate an optimization problem to maximize an integrated payoff taking both social utility and limited battery life into account. Next, we propose an efficient algorithm to find the optimal solution. Through extensive simulations, our algorithm is verified in terms of higher integrated payoff. Next, we propose an efficient algorithm to find the optimal solution. Through extensive simulations, our algorithm is verified in terms of higher integrated payoff.
{"title":"Cooperative Positioning Optimization in Mobile Social Networks","authors":"Chaofeng Zhang, K. Ota, M. Dong","doi":"10.1109/VTCFall.2016.7880942","DOIUrl":"https://doi.org/10.1109/VTCFall.2016.7880942","url":null,"abstract":"Mobile positioning technology is one of location-based services (LBS) which locates mobile devices and cooperative positioning is promising to increase its energy efficiency. The cooperative positioning, however, shares location information between the devices and users may be unwilling to provide their location information to others with additional energy consumption. In this paper, we propose a new positioning scheme using social networks, that motivates the users to participate in the cooperative positioning. Firstly, we define the social utility to indicate the strength of the social network relationship between two nodes, based on the number of mutual friends. Then, we formulate an optimization problem to maximize an integrated payoff taking both social utility and limited battery life into account. Next, we propose an efficient algorithm to find the optimal solution. Through extensive simulations, our algorithm is verified in terms of higher integrated payoff. Next, we propose an efficient algorithm to find the optimal solution. Through extensive simulations, our algorithm is verified in terms of higher integrated payoff.","PeriodicalId":6484,"journal":{"name":"2016 IEEE 84th Vehicular Technology Conference (VTC-Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80494131","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 : 2016-09-01DOI: 10.1109/VTCFall.2016.7880881
H. Amar, O. Basir
Modern transportation systems suffer from a variety of problems. The most notable among these problems is traffic congestions. Traffic congestions have been a subject for much of research discussing the impact of the traffic on the environment, the financial cost it incurs, and the safety risks it poses. The research of this paper alternatively suggests a solution model to mitigate the congestion problem: the personalization of the trip planning process based on the social habits of the travellers. These habits can be derived from monitoring daily activities, calendar events, and social feeds from the various outlets of social media. The different sentiments of the travellers can be processed to generate several planning profiles. Travellers will be able to choose the profiles representing their personalities and subject them to further customization. The customized profile can be considered as an avatar. As the avatar assumes the traveller's planning persona, it will start to automatically plan the daily trips on behalf of the traveller. To fully grasp the functionality of the proposed approach, Game theory is used to analyze the new trip planning approach and its effect on the traffic flow.
{"title":"A Solution to the Congestion Problem: Profiles Driven Trip Planning","authors":"H. Amar, O. Basir","doi":"10.1109/VTCFall.2016.7880881","DOIUrl":"https://doi.org/10.1109/VTCFall.2016.7880881","url":null,"abstract":"Modern transportation systems suffer from a variety of problems. The most notable among these problems is traffic congestions. Traffic congestions have been a subject for much of research discussing the impact of the traffic on the environment, the financial cost it incurs, and the safety risks it poses. The research of this paper alternatively suggests a solution model to mitigate the congestion problem: the personalization of the trip planning process based on the social habits of the travellers. These habits can be derived from monitoring daily activities, calendar events, and social feeds from the various outlets of social media. The different sentiments of the travellers can be processed to generate several planning profiles. Travellers will be able to choose the profiles representing their personalities and subject them to further customization. The customized profile can be considered as an avatar. As the avatar assumes the traveller's planning persona, it will start to automatically plan the daily trips on behalf of the traveller. To fully grasp the functionality of the proposed approach, Game theory is used to analyze the new trip planning approach and its effect on the traffic flow.","PeriodicalId":6484,"journal":{"name":"2016 IEEE 84th Vehicular Technology Conference (VTC-Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79024335","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 : 2016-09-01DOI: 10.1109/VTCFall.2016.7881146
J. M. Moualeu, W. Hamouda, F. Takawira
This paper presents an analytical study on the outage probability (OP) of cognitive amplify-and-forward (AF) with underlay spectrum-sharing systems subject to Rayleigh fading. In the underlying scheme, we consider a partial relay selection with outdated channel state information (CSI) and a spectrum-sharing system where the transmit power conditions are controlled by the combined interference power in the primary network and the maximum allowable transmission power at the secondary network. We first derive the end-to-end OP in closed form and then present asymptotic analysis for the high signal-to-noise ratio (SNR). Finally, Monte-Carlo simulations are provided to verify the accuracy of the theoretical analysis.
{"title":"Partial Variable-Gain AF Relay Selection with Outdated Channel Estimates in Spectrum-Sharing Networks","authors":"J. M. Moualeu, W. Hamouda, F. Takawira","doi":"10.1109/VTCFall.2016.7881146","DOIUrl":"https://doi.org/10.1109/VTCFall.2016.7881146","url":null,"abstract":"This paper presents an analytical study on the outage probability (OP) of cognitive amplify-and-forward (AF) with underlay spectrum-sharing systems subject to Rayleigh fading. In the underlying scheme, we consider a partial relay selection with outdated channel state information (CSI) and a spectrum-sharing system where the transmit power conditions are controlled by the combined interference power in the primary network and the maximum allowable transmission power at the secondary network. We first derive the end-to-end OP in closed form and then present asymptotic analysis for the high signal-to-noise ratio (SNR). Finally, Monte-Carlo simulations are provided to verify the accuracy of the theoretical analysis.","PeriodicalId":6484,"journal":{"name":"2016 IEEE 84th Vehicular Technology Conference (VTC-Fall)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81513329","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：