2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)最新文献_第6页

Unified analysis of cooperative spectrum sensing over generalized multipath fading channels 广义多径衰落信道协同频谱感知的统一分析

2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2015-12-03 DOI: 10.1109/PIMRC.2015.7343326

L. Mohjazi, Diana W. Dawoud, P. Sofotasios, S. Muhaidat, M. Dianati, M. Valkama, G. Karagiannidis

{"title":"Unified analysis of cooperative spectrum sensing over generalized multipath fading channels","authors":"L. Mohjazi, Diana W. Dawoud, P. Sofotasios, S. Muhaidat, M. Dianati, M. Valkama, G. Karagiannidis","doi":"10.1109/PIMRC.2015.7343326","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343326","url":null,"abstract":"The present work is devoted to the analytic performance evaluation of cooperative spectrum sensing (CSS) over generalized fading channels. The proposed analysis is based on the efficient Gaussian-Finite-Mixture (GFM) that allows the derivation of a simple and accurate closed-form expression for the average probability of energy detection (ED) under different fading environments. Capitalizing on this, we derive generalized closed-form expressions for the global probabilities of detection for the CSS with two main hard centralized fusion rules, namely, the AND and the OR rules. The efficiency and usefulness of the proposed expressions is justified by comparing the corresponding complementary receiver operating characteristic (ROC) curves for both multipath and composite multipath/shadowing fading channels, which are otherwise particularly difficult to obtain. The offered analytic results are corroborated by respective results from computer simulations and it is shown that the corresponding performance depends significantly on both the severity of fading and the involved number of users in the collaborative network.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123818408","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}

引用次数: 6

Learning-based hybrid TDMA-CSMA MAC protocol for virtualized 802.11 WLANs 用于虚拟化802.11 wlan的基于学习的混合TDMA-CSMA MAC协议

2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2015-12-03 DOI: 10.1109/PIMRC.2015.7343602

Atoosa Dalili Shoaei, Mahsa Derakhshani, S. Parsaeefard, T. Le-Ngoc

{"title":"Learning-based hybrid TDMA-CSMA MAC protocol for virtualized 802.11 WLANs","authors":"Atoosa Dalili Shoaei, Mahsa Derakhshani, S. Parsaeefard, T. Le-Ngoc","doi":"10.1109/PIMRC.2015.7343602","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343602","url":null,"abstract":"This paper presents an adaptive hybrid TDMA-CSMA MAC protocol to improve network performance and isolation among service providers (SPs) in a virtualized 802.11 network. Aiming to increase network efficiency, wireless virtual-ization provides the means to slice available resources among different SPs, with an urge to keep different slices isolated. Hybrid TDMA-CSMA can be a proper MAC candidate in such scenario benefiting from both the TDMA isolation power and the CSMA opportunistic nature. In this paper, we propose a dynamic MAC that schedules high-traffic users in the TDMA phase with variable size to be determined. Then, the rest of active users compete to access the channel through CSMA. The objective is to search for a scheduling that maximizes the expected sum throughput subject to SP reservations. In the absence of arrival traffic statistics, this scheduling is modeled as a multi-armed bandit (MAB) problem, in which each arm corresponds to a possible scheduling. Due to the dependency between the arms, existing policies are not directly applicable in this problem. Thus, we present an index-based policy where we update and decide based on learning indexes assigned to each user instead of each arm. To update the indexes, in addition to TDMA information, observations from CSMA phase are used, which adds a new exploration phase for the proposed MAB problem. Throughput and isolation performance of the proposed self-exploration-aided index-based policy (SIP) are evaluated by numerical results.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122907226","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}

引用次数: 10

Reducing signaling overload: Flexible capillary admission control for dense MTC over LTE networks 减少信号过载:LTE网络上密集MTC的灵活毛细管准入控制

2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2015-12-03 DOI: 10.1109/PIMRC.2015.7343500

M. I. Hossain, Andres Laya, Francesco Militano, S. Iraji, J. Markendahl

{"title":"Reducing signaling overload: Flexible capillary admission control for dense MTC over LTE networks","authors":"M. I. Hossain, Andres Laya, Francesco Militano, S. Iraji, J. Markendahl","doi":"10.1109/PIMRC.2015.7343500","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343500","url":null,"abstract":"The increasing adoption of Machine-Type Communication (MTC) applications on existing Long Term Evolution (LTE) brings new challenges for traditional signaling mechanism and system capacity. MTC is related to high number of devices; which represents a challenge when performing control and signaling procedures required for getting resource grant, since these processes are inefficient compared to the actual resource usage for small data transmissions. Solutions based on device grouping propose a static grouping approach, which does not perform well in low load scenario. This paper introduces the notion of a flexible admission/connection that can give granular group device control to Core network. With the proposed approach devices can be grouped for a certain period of time under supervision and control of a gateway and they can be ungrouped when there is no need for grouping them together. In this way, a finer control can be achieved on prioritizing certain services and load balancing. Our simulation results demonstrate significant signaling reduction by using this simple scheme compared to conventional connection procedure.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127756376","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}

引用次数: 13

Joint downlink and uplink network performance analysis with CRE in heterogeneous wireless network 异构无线网络中基于CRE的联合上下行网络性能分析

2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2015-12-03 DOI: 10.1109/PIMRC.2015.7343565

Kun Yang, Pingyang Wang, Xuefen Hong, Xing Zhang

{"title":"Joint downlink and uplink network performance analysis with CRE in heterogeneous wireless network","authors":"Kun Yang, Pingyang Wang, Xuefen Hong, Xing Zhang","doi":"10.1109/PIMRC.2015.7343565","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343565","url":null,"abstract":"One of the main purposes for heterogeneous wireless networks is to promote the network energy efficiency. Cell Range Expansion (CRE), as a promising solution to offload macro BS traffic and improve the network capacity, will help to improve the network energy efficiency. Users that offloaded to micro Base Stations (BSs) will always have much lower downlink (DL) signal-to-interference-and-noise ratio (SINR) but higher uplink (UL) SINR. Therefore, introducing CRE can improve UL transmission performance while decrease DL performance slightly. In this paper, exploiting stochastic geometry, we focus on the performance of downlink and uplink joint transmission in two-tier heterogeneous network where micro BS employs CRE. We derive the expression of whole network transmission success probability (TSP) and energy efficiency (EE) which considering joint transmission of DL and UL. Both theoretical and simulation results show that there is an optimal CRE bias and an optimal transmit power of macro BS to maximize TSP and EE. When the optimal value of CRE bias is selected, the increase of micro BS density has little influence on EE but can improve TSP considerably.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133920641","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}

引用次数: 10

Fairness awared joint sub-channel and power allocation via genetic algorithm in MIMO two-tier networks 基于遗传算法的MIMO两层网络公平性感知联合子信道和功率分配

2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2015-12-03 DOI: 10.1109/PIMRC.2015.7343464

Liang Chen, Lin Ma, Yubin Xu

{"title":"Fairness awared joint sub-channel and power allocation via genetic algorithm in MIMO two-tier networks","authors":"Liang Chen, Lin Ma, Yubin Xu","doi":"10.1109/PIMRC.2015.7343464","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343464","url":null,"abstract":"Advanced interference coordination and resource management schemes are important in heterogeneous wireless networks in order to achieve a high network capacity and good user experience. In this paper, we present a joint consideration of the sub-channel allocation and power distribution in MIMO two-tier networks where the femtocells form clusters of equal size. All of the BSs have a multi-antenna configuration utilizing zero-forcing beamforming. The optimization objective maximizes the long-term system throughput and guarantees the fairness among Femto users (FUEs) in different tiers at the same time. After that, a modified genetic algorithm (GA) is addressed to resolve the mixed-integer nonlinear programming problem involved. Each chromosome in the proposed GA is divided into an integer string for sub-channel allocation, and a real number strings for power distribution. In addition, new initialization, crossover and mutation operations are employed for this new type of chromosomes. Conducted simulations show that the proposed GA can increase the throughput of the system and guarantee the fairness among the FUEs.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134233127","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}

引用次数: 0

Doppler power spectrum densities for fixed-to-fixed radio channels with moving scatterers in millimeter-wave band 毫米波带移动散射体的固定对固定无线电信道的多普勒功率谱密度

2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2015-12-03 DOI: 10.1109/PIMRC.2015.7343313

Xiongwen Zhao, Qingdong Han, Bin Li, Jianwu Dou, W. Hong

引用次数: 0

Pre-processing based soft-demapper for per-tone MIMO operation in QAM-FBMC systems 基于预处理的QAM-FBMC系统单音MIMO操作软定位器

2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2015-12-03 DOI: 10.1109/PIMRC.2015.7343352

Kyeongyeon Kim, Y. Yun, Chanhong Kim, Z. Ho, Yong-Ho Cho, J. Seol

{"title":"Pre-processing based soft-demapper for per-tone MIMO operation in QAM-FBMC systems","authors":"Kyeongyeon Kim, Y. Yun, Chanhong Kim, Z. Ho, Yong-Ho Cho, J. Seol","doi":"10.1109/PIMRC.2015.7343352","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343352","url":null,"abstract":"As a promising candidate to replace cyclic prefixed orthogonal frequency division multiplexing (CP-OFDM), a new quadrature amplitude modulation filter-bank multi-carrier (QAM-FBMC) has been proposed for enabling spectral efficiency increase and spectrum confinement while keeping near orthogonality. QAM transmission can combat intrinsic interference of conventional offset-QAM (OQAM)-FBMC, which is main bottleneck in channel estimator and multiple antenna transceiver design. Compared to existing single filter based QAM-FBMC, the new QAM-FBMC has more optimization freedom in multiple prototype filters to increase self signal-to-interference ratio (SIR). In this paper, the possibility of per-tone multiple input multiple output (MIMO) reception in the new QAM-FBMC system is exploited. Our MIMO receiver is constructed with per-tone MIMO equalization in oversampled signal domain and its soft-demapper in symbol domain. Not only the separate log likelihood ratio (LLR) calculation per stream but also joint LLR calculation (i.e., soft maximum likelihood (ML) detection) is implemented with pre-processing. Simulation results show that the per-tone MIMO reception in QAM-FBMC is comparable to that of CP-OFDM.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115322179","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}

引用次数: 10

Channel-aware local search (CA-LS) for iterative MIMO detection 信道感知局部搜索(CA-LS)迭代MIMO检测

2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2015-12-03 DOI: 10.1109/PIMRC.2015.7343394

I-Wei Lai, Chia-han Lee, G. Ascheid, H. Meyr, T. Chiueh

{"title":"Channel-aware local search (CA-LS) for iterative MIMO detection","authors":"I-Wei Lai, Chia-han Lee, G. Ascheid, H. Meyr, T. Chiueh","doi":"10.1109/PIMRC.2015.7343394","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343394","url":null,"abstract":"We propose an efficient iterative multiple-input multiple-output (MIMO) detection algorithm based on the local search. Specifically, since the MIMO channel matrix twists the lattice structure of the received symbols, the proposed channel-aware local search (CA-LS) defines its search neighborhood according to the instantaneous channel realization. Such channel-dependent neighborhood can be efficiently identified by using the sphere decoder in a set that comprises the differences between pairs of QAM vectors, which is termed as delta vectors. The delta vectors with small quadratic norms with respect to the channel matrix are identified and then used as the search directions of the CA-LS. Features like sparsity and non-uniformity of delta vectors are exploited to reduce the SD complexity. Furthermore, by reformulating the detection criterion, the log-likelihood ratio (LLR) computations and searches of the CA-LS are greatly simplified. Numerical simulations demonstrate that compared with other practical iterative MIMO detectors, e.g., the list sphere decoder, the CA-LS achieves superior performance in both error rate and complexity aspects.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114185023","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}

引用次数: 4

An energy efficient cell selection scheme for femtocell network with spreading 具有扩张性的飞蜂窝网络节能小区选择方案

2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2015-12-03 DOI: 10.1109/PIMRC.2015.7343548

Rahul Thakur, Vijeth J. Kotagi, C. Murthy

{"title":"An energy efficient cell selection scheme for femtocell network with spreading","authors":"Rahul Thakur, Vijeth J. Kotagi, C. Murthy","doi":"10.1109/PIMRC.2015.7343548","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343548","url":null,"abstract":"Use of femtocells for indoor and office environment has proved to be an effective solution to handle ever increasing mobile data demands. Femtocell helps improving network capacity in an energy efficient manner without significantly burdening the operator with huge capital and operational expenditure. Since extremely dense femtocell deployments are expected in near future, it is of interest to look into their energy efficiency measures. In this paper, we analyse the energy efficiency aspect of cell selection scheme for femtocell networks. Cell selection scheme defines the criteria on which mobile users associate themselves with base stations. Hence, it plays a crucial role in system load balancing and total energy consumption. We suggest a unique cell selection scheme that assigns mobile users to femtocell base stations considering the capacity improvement obtained per unit increase in transmit power. Our proposed scheme shows an improvement in network performance in terms of both system capacity and energy efficiency. Additionally, we suggest the use of power spreading over subchannels to keep overall interference minimum while maximizing spectrum utilization.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"170 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114305331","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}

引用次数: 15

How much can White-Fi networks deliver to cellular operators? 白- fi网络能给手机运营商带来多少服务?

2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) Pub Date : 2015-12-03 DOI: 10.1109/PIMRC.2015.7343283

Reham Almesaeed, N. Abdullah, A. Doufexi, A. Nix

{"title":"How much can White-Fi networks deliver to cellular operators?","authors":"Reham Almesaeed, N. Abdullah, A. Doufexi, A. Nix","doi":"10.1109/PIMRC.2015.7343283","DOIUrl":"https://doi.org/10.1109/PIMRC.2015.7343283","url":null,"abstract":"In order to alleviate the mobile data explosion problem, a Wi-Fi offloading strategy has been proposed. Given the recent deployment of Wi-Fi like systems in the TVWS (TV White Space), the mobile offloading to White-Fi networks is an attractive solution to mobile operators to provide full broadband coverage in dense urban environments. To quantify the amount of throughput and coverage gain achieved from users offloading, this paper conducts a simulation-based analysis for a range of carrier class access points (AP) densities considering practical deployment of the IEEE 802.11af and 802.11g networks. The study takes into account a realistic modelling of the TV channels availability and wireless channel propagation. The interference from co-channel operation and DVB-T systems are also considered. The paper shows that the opportunistic deployment of White-Fi networks generally results in high throughput gain and coverage probability at various AP densities as compared to Wi-Fi only networks. It also grants a higher fraction of users with high throughput capability as compared to 802.11g only networks. In addition, the study provides the mobile operators with a range of performance statistics that can help them to select the suitable range of AP deployment to meet certain performance thresholds.","PeriodicalId":274734,"journal":{"name":"2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114414059","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}

引用次数: 0