{"title":"Wireless LAN on 2-D Communication Tiles Using Ultra-Wideband as an Alternative Spectrum Resource","authors":"A. Noda, H. Shinoda","doi":"10.1109/ICUWB.2015.7324530","DOIUrl":"https://doi.org/10.1109/ICUWB.2015.7324530","url":null,"abstract":"To meet the ever increasing demand for wireless local area network (WLAN) connectivity, we propose to use the frequency range allocated for ultra-wideband (UWB) radios as an alternative spectral resource for conventional WLAN systems. Since the maximum permitted emission of UWB radios is 50-dB smaller than that of conventional WLAN devices, aerial communication range will be shortened to less than 1 m. To enhance the communication range while reducing the emission, two- dimensional communication (2DC) technology can be used. The low power UWB signals can be transferred along a 2DC-tiled floor with acceptably low loss, and can be received at arbitrary points on the floor of a room. This paper presents a scheme to use the UWB 2DC system for WLAN signal transmission. An adopter device is attached to each of WLAN access point and client station. The adopter upconverts WLAN's 2.4-GHz signal to 8- GHz (in UWB's frequency range), and downconverts the received 8-GHz signal to 2.4-GHz. The adopter is connected to the antenna port of the WLAN device, and no other modifications to the circuit, firmware, and software of the WLAN device are needed. The upconverted UWB signal is attenuated to the UWB's permitted emission level before sending. Experimental results demonstrate that the WLAN connection through prototype converters and a 2DC sheet can achieve the same order of throughput as the original 2.4-GHz aerial WLAN connection. Since each converter can choose individual upconversion frequency from the UWB's frequency range, the WLAN devices in the system virtually share the UWB's bandwidth up to 7 GHz, much wider than the 80- MHz bandwidth originally allocated for 2.4-GHz WLAN devices.","PeriodicalId":339208,"journal":{"name":"2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122181398","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}
{"title":"A Novel Ultra-Wideband Bandpass Filter Based on Multiple-Mode Resonators with Defected Ground Structure","authors":"Jinxin Li, Jun Xu, T. Denidni, Q. Zeng","doi":"10.1109/ICUWB.2015.7324410","DOIUrl":"https://doi.org/10.1109/ICUWB.2015.7324410","url":null,"abstract":"In this paper, a novel ultra-wideband (UWB) bandpass filter (BPF) with excellent passband performance and skirt selectivity is designed and fabricated. The proposed UWB filter consists of dual symmetric multiple-mode resonators (MMRs) and four defected ground structures. Six modes, including three odd modes and three even modes, could be designed within UWB band, and two transmission zeros are at the lower and upper cutoff frequencies. The paper shows that even modes can be controlled flexibly, while the odd modes remain the same. The design of the proposed filter is confirmed by simulation with a fullwave electromagnetic simulator and the experiment. The passband of the implemented filter covers the range of 3.1-10.6GHz. A good agreement between the simulated and measured results is obtained.","PeriodicalId":339208,"journal":{"name":"2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133305570","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}
Adel Ati, F. Bellili, Haithem Haggui, A. Samet, S. Affes
{"title":"Implementation of a Maximum Likelihood Doppler Spread Estimator on a Model-Based Design Platform","authors":"Adel Ati, F. Bellili, Haithem Haggui, A. Samet, S. Affes","doi":"10.1109/ICUWB.2015.7324461","DOIUrl":"https://doi.org/10.1109/ICUWB.2015.7324461","url":null,"abstract":"A new maximum likelihood (ML) Doppler spread estimator, recently shown to outperform most representative state-of-the-art solutions both in accuracy and complexity, is implemented on a FPGA-based platform. Rapid prototyping of the entire design is built as a highlevel Simulink model using Xilinx System Generator IP blocks. The RF front-end of the design is implemented using the Nutaq's model-based design kit (MBDK). The ML Doppler spread estimator is assessed at a sampling rate of 80 Msps over a realistic RF channel generated by the EB Propsim FS8 channel emulator. Comparisons with the original floating-point MATLAB version suggest negligible performance losses, thereby validating and confirming the efficiency of the new real-time overt-the-air hardware design and implementation.","PeriodicalId":339208,"journal":{"name":"2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124577310","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}
{"title":"Service Differentiation in Software Defined Virtual Heterogeneous Wireless Networks","authors":"Mohammad Moshiur Rahman, C. Despins, S. Affes","doi":"10.1109/ICUWB.2015.7324508","DOIUrl":"https://doi.org/10.1109/ICUWB.2015.7324508","url":null,"abstract":"Wireless network virtualization is seen as a key component for future 5G networks. Virtualization enables flexible, on demand, elastic network provisioning. We deem software defined networking (SDN) as a key enabling technology for virtualizing future wireless networks. In this regard, we introduce HetNet cloud, a software- defined cloud infrastructure for heterogeneous virtual wireless networks. As a use case, we implement two virtual network slices and study service differentiation in a HetNet wireless environment. We implement the emulation scenario in Mininet platform using high-level programming abstract of Pyretic north bound API. Emulation results show that, in the HetNet cloud model, virtual wireless networks are able to achieve the quality of service (QoS) requirement of carrier networks while ensuring efficient resource utilization through sharing a common subset of network infrastructure.","PeriodicalId":339208,"journal":{"name":"2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121076738","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}
M. Akbari, R. Movahedinia, A. Sebak, S. Zarbakhsh, N. Rojhani, V. Devabhaktuni
{"title":"UWB Antenna with 3.5-/5.5-GHz Dual Band-Notched Characteristics Using Two Radiating Stubs","authors":"M. Akbari, R. Movahedinia, A. Sebak, S. Zarbakhsh, N. Rojhani, V. Devabhaktuni","doi":"10.1109/ICUWB.2015.7324525","DOIUrl":"https://doi.org/10.1109/ICUWB.2015.7324525","url":null,"abstract":"In this letter, a new microstrip antenna for UWB applications is suggested. The antenna is able to filter both of the interference frequency bands of WiMAX and WLAN. The antenna consists of two radiating stubs, a partial ground, and a feed-line. In the configuration, by etching an inverted T- shaped slot on the ground plane, extra resonance is excited, thus broad impedance bandwidth can be obtained. The measured results exhibits that the antenna can cover the bandwidth from 2.7 to 13.0 GHz for VSWR≤ 2 excluding the rejected bands from 3.0 to 3.7 GHz and from 4.9 to 6.0 GHz.","PeriodicalId":339208,"journal":{"name":"2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116629527","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}
{"title":"Resource Allocation in Heterogeneous Small-Cell Networks with Interference Avoidance Admission","authors":"V. Asghari, Oussama Rhouma, S. Affes, A. Ghrayeb","doi":"10.1109/ICUWB.2015.7324507","DOIUrl":"https://doi.org/10.1109/ICUWB.2015.7324507","url":null,"abstract":"In this paper, we consider a heterogenous small-cell network (HSCNet) with co-channel deployment and investigate the throughput performance of the proposed admission control algorithm based on a new received interference constraint at the small-cell base station (SCBS) nodes. In the considered co-channel heterogenous network, by utilizing the proposed admission algorithm based on the amount of received interference generated at the neighboring macro users, the new user is admitted at the small-cell network (SCNet) while ensuring that no harmful interference is caused to the adjacent macro users. For the proposed admission algorithm, we investigate the achievable effective capacity performance of the SCNet subject to maximizing the throughput performance of the SCNet. Finally, we sustain our theoretical analysis by numerical results.","PeriodicalId":339208,"journal":{"name":"2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128355549","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}
{"title":"Combined Interference Cancellation and Avoidance over the Downlink of Spectrum-Sharing LTE HetNet","authors":"R. Nasri, S. Affes, A. Stephenne","doi":"10.1109/ICUWB.2015.7324425","DOIUrl":"https://doi.org/10.1109/ICUWB.2015.7324425","url":null,"abstract":"In a spectrum-sharing heterogeneous network (Het- Net), low-power small cells such as femtocells are deployed jointly with macrocells. This new cell layer generates interference that degrades network performance. To mitigate this critical issue in HetNets, we combine both interference cancellation and interference avoidance to benefit from their respective advantages on the downlink of LTE (Long Term Evolution). On one hand, a new downlink interference cancellation (DL-IC) strategy reduces the interference impact on users by optimizing their received signal to interference plus noise ratio (SINR). On the other hand, a new low-power almost-blank subframes (LP- ABS) policy minimizes the effect of downlink interference on femtocells and neighboring macrocells by reducing the transmit power of macrocells during special subframes. When implementing DL-IC and LP-ABS separately, system-level simulations do suggest that both global network performance and user experience in terms of total throughput and received SNR or link-level throughput, respectively, are significantly enhanced, indeed. However, much more significant gains both in performance and complexity can be achieved by combining newly proposed DL-IC and LP-ABS interference mitigation strategies.","PeriodicalId":339208,"journal":{"name":"2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130440425","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}
A. Al-Dulaimi, A. Anpalagan, M. Bennis, A. Vasilakos
{"title":"5G Green Communications: C-RAN Provisioning of CoMP and Femtocells for Power Management","authors":"A. Al-Dulaimi, A. Anpalagan, M. Bennis, A. Vasilakos","doi":"10.1109/ICUWB.2015.7324392","DOIUrl":"https://doi.org/10.1109/ICUWB.2015.7324392","url":null,"abstract":"The fifth generation (5G) wireless network is ex- pected to have dense deployments of cells in order to provide efficient Internet and cellular connections. The cloud radio access network (C- RAN) emerges as one of the 5G solutions to steer the network architecture and control resources beyond the legacy radio access technologies. The C-RAN decouples the traffic management operations from the radio access technologies leading to a new combination of virtualized network core and fronthaul architecture. In this paper, we first investigate the power consumption impact due to the aggressive deployments of low-power neighborhood femtocell networks (NFNs) under the umbrella of a coordinated multipoint (CoMP) macrocell. We show that power savings obtained from employing low power NFN start to decline as the density of deployed femtocells exceed certain threshold. The analysis considers two CoMP sites at the cell-edge and intra-cell areas. Second, to restore the power efficiency and network stabilization, a C-RAN model is proposed to restructure the NFN into clusters to ease the energy burden in the evolving 5G systems. Tailoring this to traffic load, selected clusters will be switched off to save power when they operate with low traffic loads.","PeriodicalId":339208,"journal":{"name":"2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127361894","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}
{"title":"Comparative Study on a 60 GHz Path Loss Channel Modeling in a Mine Environment Using Neural Networks","authors":"N. Zaarour, S. Affes, N. Kandil, N. Hakem","doi":"10.1109/ICUWB.2015.7324427","DOIUrl":"https://doi.org/10.1109/ICUWB.2015.7324427","url":null,"abstract":"A precise and accurate channel model is essential in conceiving and designing wireless telecommunication systems. However, modeling the channel in a confined and harsh environment such as an underground mine is more complicated and challenging. In this paper, we present an experimental study on modeling a 60 GHz path loss fading based on experimental measurements made in an underground former gold mine. To address the accuracy of artificial neural networks (ANN) in modeling problems, an approach based on two well- known ANN, Multilayer Perceptron (MLP) and Radial Basis Function (RBF) is considered, and a comparison between them in modeling the path loss attenuation is evaluated.","PeriodicalId":339208,"journal":{"name":"2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114352507","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}
{"title":"A Comparison of Energy-Efficient HARQ Protocols for M2M Communication in the Finite Block-Length Regime","authors":"Marco Centenaro, Giulio Ministeri, L. Vangelista","doi":"10.1109/ICUWB.2015.7324397","DOIUrl":"https://doi.org/10.1109/ICUWB.2015.7324397","url":null,"abstract":"Hybrid Automatic Repeat reQuest (HARQ) techniques are largely used in the context of wireless communications systems especially in the last few years, being employed in the latest cellular systems, including the Long Term Evolution (LTE) standard. Such schemes have been widely studied in literature; however, in this paper we are interested in applying the results of Polyanskiy-Poor-Verdù on the finite block-length regime, comparing the performance of Type-I and Type-II HARQ schemes in the context of green communication, i.e., in a scenario in which the energy efficiency is a key performance indicator. A prominent example of this context is the Machine-to-Machine (M2M) communication, which is foreseen to play a fundamental role as an enabler of the Internet of Things (IoT) paradigm. We derive a novel, optimal, power allocation strategy and we provide simulation results showing that a minimum 40% energy saving can be achieved if we enable packet combining at the receiver side.","PeriodicalId":339208,"journal":{"name":"2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126501457","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}