Pub Date : 2015-06-08DOI: 10.1109/ICCW.2015.7247591
Hongyu Xiang, Y. Yu, Zhongyuan Zhao, Yong Li, M. Peng
The dynamic stochastic resource optimization problem in heterogeneous cloud radio access networks (H-CRANs) is researched in this paper, characterizing the cooperative beam-forming with fronthaul capacity and queue stability constraints. To make the average energy efficiency (EE) of remote radio heads (RRHs) arbitrarily close to the optimum and maintain system queue stability, the EE optimization problem considering congestion control is presented. Under the Lyapunov framework, the problem is reformulated as an optimal network-wide beam-former design of RRHs, which is solved through a generalized weighted minimum mean square error (WMMSE) approach. The mathematical analysis and simulation results demonstrate that an EE-delay tradeoff can be achieved by the proposed algorithm.
{"title":"Tradeoff between energy efficiency and queues delay in heterogeneous cloud radio access networks","authors":"Hongyu Xiang, Y. Yu, Zhongyuan Zhao, Yong Li, M. Peng","doi":"10.1109/ICCW.2015.7247591","DOIUrl":"https://doi.org/10.1109/ICCW.2015.7247591","url":null,"abstract":"The dynamic stochastic resource optimization problem in heterogeneous cloud radio access networks (H-CRANs) is researched in this paper, characterizing the cooperative beam-forming with fronthaul capacity and queue stability constraints. To make the average energy efficiency (EE) of remote radio heads (RRHs) arbitrarily close to the optimum and maintain system queue stability, the EE optimization problem considering congestion control is presented. Under the Lyapunov framework, the problem is reformulated as an optimal network-wide beam-former design of RRHs, which is solved through a generalized weighted minimum mean square error (WMMSE) approach. The mathematical analysis and simulation results demonstrate that an EE-delay tradeoff can be achieved by the proposed algorithm.","PeriodicalId":6464,"journal":{"name":"2015 IEEE International Conference on Communication Workshop (ICCW)","volume":"25 1","pages":"2727-2731"},"PeriodicalIF":0.0,"publicationDate":"2015-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77677390","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 : 2015-06-08DOI: 10.1109/ICCW.2015.7247187
Quang-Dung Ho, Anh Tuan Dang, T. Le-Ngoc
This paper presents the design and implementation of an intelligent vital sign capture platform, namely uVS, which provides end-to-end connectivity between patient monitors and Electronic Healthcare Record (EHR) and remote medical staff by employing multiple communications technologies. By replacing manual operation with computer-assisted workflow and ubiquitous networking, uVS aims to enhance reliability, save time and costs for patient's monitoring routines carried out in hospitals, clinics and emergency sites. Using advanced wireless communications technologies, it allows medical staff to access to patient health conditions from EHR from anywhere at anytime in order to have fast and efficient responses to emergency situations. Network architecture and system design of uVS are first presented. Communications protocols to enable data exchange between various system entities are explained. Finally, system prototypes and preliminary experiment results are presented.
{"title":"A ubiquitous multiple-radio patient vital sign capture platform","authors":"Quang-Dung Ho, Anh Tuan Dang, T. Le-Ngoc","doi":"10.1109/ICCW.2015.7247187","DOIUrl":"https://doi.org/10.1109/ICCW.2015.7247187","url":null,"abstract":"This paper presents the design and implementation of an intelligent vital sign capture platform, namely uVS, which provides end-to-end connectivity between patient monitors and Electronic Healthcare Record (EHR) and remote medical staff by employing multiple communications technologies. By replacing manual operation with computer-assisted workflow and ubiquitous networking, uVS aims to enhance reliability, save time and costs for patient's monitoring routines carried out in hospitals, clinics and emergency sites. Using advanced wireless communications technologies, it allows medical staff to access to patient health conditions from EHR from anywhere at anytime in order to have fast and efficient responses to emergency situations. Network architecture and system design of uVS are first presented. Communications protocols to enable data exchange between various system entities are explained. Finally, system prototypes and preliminary experiment results are presented.","PeriodicalId":6464,"journal":{"name":"2015 IEEE International Conference on Communication Workshop (ICCW)","volume":"1 1","pages":"253-258"},"PeriodicalIF":0.0,"publicationDate":"2015-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79974835","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 : 2015-06-08DOI: 10.1109/ICCW.2015.7247504
M. N. Hasan, K. Anwar
In this paper, we consider multiway relay networks with massive number of users. In this situation a fixed transmission scheduling is difficult to apply. We propose uncoordinated communications using the concept of coded slotted ALOHA (CSA), where simultaneous transmitted signals are detected using iterative demapping (IDM) algorithm to improve the success rate probability. We allow each user to transmit the information via any random time slots (during the contention period) to the network. We show the bound of the proposed system and confirm an achievable point using practical coding. We also evaluate the bit-error-rate (BER) performance of the proposed technique via computer simulations. The results indicate that even though with the offered traffic of 1.11 packets/slot, reliable communications is achievable. It is also validated that the proposed system works very well even in relatively low signal-to-noise ratio (SNR) environments. Moreover, the packet-loss-rate (PLR) evaluation shows that the proposed technique outperforms the conventional CSA without simultaneous detection algorithm.
{"title":"Massive uncoordinated multiway relay networks with simultaneous detections","authors":"M. N. Hasan, K. Anwar","doi":"10.1109/ICCW.2015.7247504","DOIUrl":"https://doi.org/10.1109/ICCW.2015.7247504","url":null,"abstract":"In this paper, we consider multiway relay networks with massive number of users. In this situation a fixed transmission scheduling is difficult to apply. We propose uncoordinated communications using the concept of coded slotted ALOHA (CSA), where simultaneous transmitted signals are detected using iterative demapping (IDM) algorithm to improve the success rate probability. We allow each user to transmit the information via any random time slots (during the contention period) to the network. We show the bound of the proposed system and confirm an achievable point using practical coding. We also evaluate the bit-error-rate (BER) performance of the proposed technique via computer simulations. The results indicate that even though with the offered traffic of 1.11 packets/slot, reliable communications is achievable. It is also validated that the proposed system works very well even in relatively low signal-to-noise ratio (SNR) environments. Moreover, the packet-loss-rate (PLR) evaluation shows that the proposed technique outperforms the conventional CSA without simultaneous detection algorithm.","PeriodicalId":6464,"journal":{"name":"2015 IEEE International Conference on Communication Workshop (ICCW)","volume":"70 1","pages":"2175-2180"},"PeriodicalIF":0.0,"publicationDate":"2015-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86994688","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 : 2015-06-08DOI: 10.1109/ICCW.2015.7247374
J. Chau, T. Little
Although CMOS active pixel sensor (APS) cameras are used as receivers for low-bandwidth visible light communications (VLC), they have typically not been used to receive high-bandwidth VLC signals. However, by selectively scanning pixels on the image sensor, the sampling rate of CMOS APS pixels can be greatly improved, enabling them to capture high-bandwidth signals while maintaining the ability to scale to high image resolutions. To analyze CMOS APS image sensors for potential use in high data-rate applications, the CMOS active pixel is modeled as a linear shift-invariant (LSI) system. Using this LSI model, the frequency response (as a function of device and timing parameters) and the optimal exposure time for each sample are derived. The LSI model is also used to investigate the effects of clock-jitter on CMOS APS VLC receivers.
{"title":"Analysis of CMOS active pixel sensors as linear shift-invariant receivers","authors":"J. Chau, T. Little","doi":"10.1109/ICCW.2015.7247374","DOIUrl":"https://doi.org/10.1109/ICCW.2015.7247374","url":null,"abstract":"Although CMOS active pixel sensor (APS) cameras are used as receivers for low-bandwidth visible light communications (VLC), they have typically not been used to receive high-bandwidth VLC signals. However, by selectively scanning pixels on the image sensor, the sampling rate of CMOS APS pixels can be greatly improved, enabling them to capture high-bandwidth signals while maintaining the ability to scale to high image resolutions. To analyze CMOS APS image sensors for potential use in high data-rate applications, the CMOS active pixel is modeled as a linear shift-invariant (LSI) system. Using this LSI model, the frequency response (as a function of device and timing parameters) and the optimal exposure time for each sample are derived. The LSI model is also used to investigate the effects of clock-jitter on CMOS APS VLC receivers.","PeriodicalId":6464,"journal":{"name":"2015 IEEE International Conference on Communication Workshop (ICCW)","volume":"4 1","pages":"1398-1403"},"PeriodicalIF":0.0,"publicationDate":"2015-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90142288","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 : 2015-06-08DOI: 10.1109/ICCW.2015.7247189
Enea Cippitelli, Samuele Gasparrini, E. Gambi, S. Spinsante, Jonas Wåhslén, I. Orhan, T. Lindh
Ambient Assisted Living applications often need to integrate data from multiple sensors, to provide consistent information on the observed phenomena. Data fusion based on samples from several sensors requires accurate time synchronization with sufficient resolution, depending on the sensor sampling frequency. This work presents a technical platform for the efficient and accurate synchronization of the data captured from RGB-Depth cameras and wearable inertial sensors, that can be integrated in AAL solutions. A case study of sensor data fusion for Timed Up and Go test is also presented and discussed.
{"title":"Time synchronization and data fusion for RGB-Depth cameras and inertial sensors in AAL applications","authors":"Enea Cippitelli, Samuele Gasparrini, E. Gambi, S. Spinsante, Jonas Wåhslén, I. Orhan, T. Lindh","doi":"10.1109/ICCW.2015.7247189","DOIUrl":"https://doi.org/10.1109/ICCW.2015.7247189","url":null,"abstract":"Ambient Assisted Living applications often need to integrate data from multiple sensors, to provide consistent information on the observed phenomena. Data fusion based on samples from several sensors requires accurate time synchronization with sufficient resolution, depending on the sensor sampling frequency. This work presents a technical platform for the efficient and accurate synchronization of the data captured from RGB-Depth cameras and wearable inertial sensors, that can be integrated in AAL solutions. A case study of sensor data fusion for Timed Up and Go test is also presented and discussed.","PeriodicalId":6464,"journal":{"name":"2015 IEEE International Conference on Communication Workshop (ICCW)","volume":"66 1","pages":"265-270"},"PeriodicalIF":0.0,"publicationDate":"2015-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91007534","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 : 2015-06-08DOI: 10.1109/ICCW.2015.7247456
L. Tang, Hao Chen
Cloud federation paradigm can help cloud providers (CPs) to overcome resource limitation during spikes in demand, by outsourcing requests to other CPs with idle resources in federation. In this paper, we consider a broker-based market where multiple CPs compete to lease multiple CPs with idle resources for request outsourcing. We propose an iterative double auction mechanism that ensures the efficient operation of the market by maximizing the social welfare of the federation. The proposed scheme takes into account the particular characteristics of request outsourcing in cloud federation, such as the average response time requirement of CPs and the coupling of CPs' outsourcing decisions. Moreover, this scheme does not require the full information of CPs, and achieves a non-negative revenue for the broker.
{"title":"Double auction mechanism for request outsourcing in cloud federation","authors":"L. Tang, Hao Chen","doi":"10.1109/ICCW.2015.7247456","DOIUrl":"https://doi.org/10.1109/ICCW.2015.7247456","url":null,"abstract":"Cloud federation paradigm can help cloud providers (CPs) to overcome resource limitation during spikes in demand, by outsourcing requests to other CPs with idle resources in federation. In this paper, we consider a broker-based market where multiple CPs compete to lease multiple CPs with idle resources for request outsourcing. We propose an iterative double auction mechanism that ensures the efficient operation of the market by maximizing the social welfare of the federation. The proposed scheme takes into account the particular characteristics of request outsourcing in cloud federation, such as the average response time requirement of CPs and the coupling of CPs' outsourcing decisions. Moreover, this scheme does not require the full information of CPs, and achieves a non-negative revenue for the broker.","PeriodicalId":6464,"journal":{"name":"2015 IEEE International Conference on Communication Workshop (ICCW)","volume":"6 1","pages":"1889-1894"},"PeriodicalIF":0.0,"publicationDate":"2015-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73522592","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 : 2015-06-08DOI: 10.1109/ICCW.2015.7247253
S. Chandrasekharan, A. Al-Hourani, K. Magowe, L. Reynaud, K. Sithamparanathan
Device-to-Device (D2D) communications is considered to be a promising technique in next-generation communication networks aiming to enhance spectrum utilization and energy-efficiency. In this paper, we investigate the radio propagation behavior of the D2D channel in rural areas by conducting field measurements. We characterize the D2D channel by estimating the path-loss exponent and the standard deviation of the shadowing and by presenting the shadowing correlation analysis in various propagation environments using ISM band frequencies of 922 MHz and 2,466 MHz. The reported results are of great importance to system designers and researchers alike, to assist the development and the evaluation of innovative D2D protocols under realistic propagation conditions.
{"title":"Propagation measurements for D2D in rural areas","authors":"S. Chandrasekharan, A. Al-Hourani, K. Magowe, L. Reynaud, K. Sithamparanathan","doi":"10.1109/ICCW.2015.7247253","DOIUrl":"https://doi.org/10.1109/ICCW.2015.7247253","url":null,"abstract":"Device-to-Device (D2D) communications is considered to be a promising technique in next-generation communication networks aiming to enhance spectrum utilization and energy-efficiency. In this paper, we investigate the radio propagation behavior of the D2D channel in rural areas by conducting field measurements. We characterize the D2D channel by estimating the path-loss exponent and the standard deviation of the shadowing and by presenting the shadowing correlation analysis in various propagation environments using ISM band frequencies of 922 MHz and 2,466 MHz. The reported results are of great importance to system designers and researchers alike, to assist the development and the evaluation of innovative D2D protocols under realistic propagation conditions.","PeriodicalId":6464,"journal":{"name":"2015 IEEE International Conference on Communication Workshop (ICCW)","volume":"23 1","pages":"639-645"},"PeriodicalIF":0.0,"publicationDate":"2015-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85919277","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 : 2015-06-08DOI: 10.1109/ICCW.2015.7247200
A. Macho, M. Morant, R. Llorente
The impact of optical crosstalk in multicore fibres considering both internal and external optical interference on a MIMO radio-over-fibre optical transmission system is experimentally evaluated in this paper. The crosstalk impact is analysed on full-standard 3GPP LTE-Advanced (LTE-A) signals in both SISO and MIMO configurations for comparison. The experimental results indicate that LTE-A MIMO processing support high-levels of crosstalk induced by internal interference. In addition, LTE-A 2×2 MIMO signals using high modulation formats (64QAM) tolerate 5 dB more crosstalk induced by external interference than corresponding SISO configuration. The performance of the LTE-A signals in a 4-core multicore fibre is analysed experimentally in terms of launched optical power, time and wavelength performance. Finally, an optimum core-interleaving configuration is proposed and experimentally demonstrated comprising the specific transmission of LTE-A signals on spatial optical paths in opposite cores for the multicore fibre considered.
{"title":"Experimental analysis of multicore crosstalk impact on MIMO LTE-a radio-over-fibre optical systems","authors":"A. Macho, M. Morant, R. Llorente","doi":"10.1109/ICCW.2015.7247200","DOIUrl":"https://doi.org/10.1109/ICCW.2015.7247200","url":null,"abstract":"The impact of optical crosstalk in multicore fibres considering both internal and external optical interference on a MIMO radio-over-fibre optical transmission system is experimentally evaluated in this paper. The crosstalk impact is analysed on full-standard 3GPP LTE-Advanced (LTE-A) signals in both SISO and MIMO configurations for comparison. The experimental results indicate that LTE-A MIMO processing support high-levels of crosstalk induced by internal interference. In addition, LTE-A 2×2 MIMO signals using high modulation formats (64QAM) tolerate 5 dB more crosstalk induced by external interference than corresponding SISO configuration. The performance of the LTE-A signals in a 4-core multicore fibre is analysed experimentally in terms of launched optical power, time and wavelength performance. Finally, an optimum core-interleaving configuration is proposed and experimentally demonstrated comprising the specific transmission of LTE-A signals on spatial optical paths in opposite cores for the multicore fibre considered.","PeriodicalId":6464,"journal":{"name":"2015 IEEE International Conference on Communication Workshop (ICCW)","volume":"26 1","pages":"329-333"},"PeriodicalIF":0.0,"publicationDate":"2015-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86449858","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 : 2015-06-08DOI: 10.1109/ICCW.2015.7247249
Fengyou Sun, Yuming Jiang
Device-to-device (D2D) communication, where user equipments (UEs) in proximity communicate directly with each other, is an alternative technology for densification in future wireless communications featuring extremely dense and heterogeneous networks. The intrinsic characteristics of D2D communication include (1) limited energy capacity of battery powered UEs, (2) necessary power consumption to maintain D2D communication connections, and (3) desired quality of service (QoS) on the D2D communication to ensure performance of upper layer applications. These make it one of the most challenging issues in D2D communication, which is how to achieve the best power-QoS tradeoff. The aim of this paper is to provide results that shed light on this issue, by establishing relations between the transmission power and the QoS requirements. In particular, we present closed form expressions for transmission power allocation to meet QoS requirements under D2D communication with Rayleigh channel. Numerical and simulation results illustrating the insights are also provided and discussed.
{"title":"On power and quality of service tradeoff in device-to-device communication","authors":"Fengyou Sun, Yuming Jiang","doi":"10.1109/ICCW.2015.7247249","DOIUrl":"https://doi.org/10.1109/ICCW.2015.7247249","url":null,"abstract":"Device-to-device (D2D) communication, where user equipments (UEs) in proximity communicate directly with each other, is an alternative technology for densification in future wireless communications featuring extremely dense and heterogeneous networks. The intrinsic characteristics of D2D communication include (1) limited energy capacity of battery powered UEs, (2) necessary power consumption to maintain D2D communication connections, and (3) desired quality of service (QoS) on the D2D communication to ensure performance of upper layer applications. These make it one of the most challenging issues in D2D communication, which is how to achieve the best power-QoS tradeoff. The aim of this paper is to provide results that shed light on this issue, by establishing relations between the transmission power and the QoS requirements. In particular, we present closed form expressions for transmission power allocation to meet QoS requirements under D2D communication with Rayleigh channel. Numerical and simulation results illustrating the insights are also provided and discussed.","PeriodicalId":6464,"journal":{"name":"2015 IEEE International Conference on Communication Workshop (ICCW)","volume":"52 1","pages":"614-619"},"PeriodicalIF":0.0,"publicationDate":"2015-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84721361","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 : 2015-06-08DOI: 10.1109/ICCW.2015.7247349
S. Montagner, N. Benvenuto, S. Tomasin
Massive multiple input multiple output (MIMO) millimeter wave (MMW) communications allow for a compact implementation and efficient beamforming. In this paper we focus on the problem of estimating the massive MIMO channel in a code modulated path sharing multi-antenna (CPMA) architecture, when a limited number of radio frequency (RF) chains is available, and beamforming is performed through a combination of analog and digital signal processing. Antennas are organized in uniform planar arrays (UPAs). The proposed solution is based on estimation of a channel sub-matrix and exploits properties of the UPA model. In particular, we first organize UPA indices in a way that simplifies further processing, then we propose a training sequence that minimizes the number of RF chains. Lastly, rather than estimating the subchannel matrix itself we estimate parameters of its entries by an efficient post-processing technique based on a four dimensional Fourier transform that exploits properties of the UPA model.
{"title":"Taming the complexity of mm-wave massive MIMO systems: Efficient channel estimation and beamforming","authors":"S. Montagner, N. Benvenuto, S. Tomasin","doi":"10.1109/ICCW.2015.7247349","DOIUrl":"https://doi.org/10.1109/ICCW.2015.7247349","url":null,"abstract":"Massive multiple input multiple output (MIMO) millimeter wave (MMW) communications allow for a compact implementation and efficient beamforming. In this paper we focus on the problem of estimating the massive MIMO channel in a code modulated path sharing multi-antenna (CPMA) architecture, when a limited number of radio frequency (RF) chains is available, and beamforming is performed through a combination of analog and digital signal processing. Antennas are organized in uniform planar arrays (UPAs). The proposed solution is based on estimation of a channel sub-matrix and exploits properties of the UPA model. In particular, we first organize UPA indices in a way that simplifies further processing, then we propose a training sequence that minimizes the number of RF chains. Lastly, rather than estimating the subchannel matrix itself we estimate parameters of its entries by an efficient post-processing technique based on a four dimensional Fourier transform that exploits properties of the UPA model.","PeriodicalId":6464,"journal":{"name":"2015 IEEE International Conference on Communication Workshop (ICCW)","volume":"44 1","pages":"1251-1256"},"PeriodicalIF":0.0,"publicationDate":"2015-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90623590","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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