2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications最新文献_第7页

Performance analysis of opportunistic relaying over imperfect non-identical log-normal fading channels 不完全非同对数正态衰落信道上机会中继的性能分析

2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6139842

A. Kalantari, M. Mohammadi, M. Ardebilipour

引用次数: 18

Cooperative geo-location in underground mines: A novel fingerprint positioning technique exploiting spatio-temporal diversity 地下矿山协同地理定位:一种利用时空多样性的新型指纹定位技术

2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6139715

Shehadi Dayekh, S. Affes, N. Kandil, C. Nerguizian

{"title":"Cooperative geo-location in underground mines: A novel fingerprint positioning technique exploiting spatio-temporal diversity","authors":"Shehadi Dayekh, S. Affes, N. Kandil, C. Nerguizian","doi":"10.1109/PIMRC.2011.6139715","DOIUrl":"https://doi.org/10.1109/PIMRC.2011.6139715","url":null,"abstract":"Underground narrow-vein mines result in complex indoor scenarios which require sophisticated localization techniques to maintain basic security measures. While some traditional localization systems use the triangulation techniques for outdoor channels, fingerprint positioning techniques are mostly used in more complex indoor environments like mines. One of the techniques exploited in the quasi-curvilinear topology of underground mines is the Channel Impulse Response (CIR) based fingerprint positioning combined with Artificial Neural Networks (ANNs). This article innovates a CIR-based positioning technique within a cooperative memory-assisted approach that exploits both the temporal (from different time instances) and spatial (from different space positions) diversities of the collected fingerprints. Introducing memory-type signatures in a cooperative localization technique within the spatial confinements of the tunnel-shaped narrow-vein mines significantly increases the accuracy, precision and robustness of the localization system. The cooperative memory-assisted technique is capable of localizing a transmitter with an accuracy of less than 25 cm 90% of the time.","PeriodicalId":262660,"journal":{"name":"2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115924394","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

Cross-layer designed adaptive packet length control for wireless networks 无线网络跨层自适应数据包长度控制

2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6139941

Shintaro Mori, K. Ishii, S. Ogose

引用次数: 3

Cross-layer interference minimization-oriented channel assignment in IEEE 802.11 WLANs IEEE 802.11无线局域网中面向跨层干扰最小化的信道分配

2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6139664

D. Fan, Xianbin Wang, Penghui Mi

引用次数: 7

Cooperative detection over multiple parallel channels: A principle inspired by nature 多个并行通道上的合作检测:一种受大自然启发的原理

2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6139809

R. Mathar, A. Schmeink

{"title":"Cooperative detection over multiple parallel channels: A principle inspired by nature","authors":"R. Mathar, A. Schmeink","doi":"10.1109/PIMRC.2011.6139809","DOIUrl":"https://doi.org/10.1109/PIMRC.2011.6139809","url":null,"abstract":"We consider an information theoretic model that describes parallel reception of a common signal by many receivers. The signal is distorted by noise and independently decoded by each receiver. Receivers cooperate in the sense that the outcome is conveyed to a decision center, which makes the final decision on the received signal by a majority vote. A potential scenario which could be described by this model is a cluster of base stations jointly receiving signals from a mobile station and conjoining individual decodings. Similar principles apply for cognitive radio setups where a secondary user employs many weak subcarriers, subject to sudden drop out by occupation from the primary users. The whole system is modeled as a cascade of channels, and quality of information exchange is measured by mutual information. This allows for modeling and optimizing quantization and detection in a unifying approach. Numerical evaluations demonstrate that the increase of mutual information by using additional channels is only logarithmic. 4-QAM is investigated as a concrete example and system performance is numerically investigated. The model in this paper is motivated by one used for describing information exchange in biological neural networks, revealing so called stochastic resonance by adding noise to signals.","PeriodicalId":262660,"journal":{"name":"2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116391030","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: 1

Throughput sensitivity to antenna pattern and orientation in 802.11n networks 802.11n网络中对天线方向和方向的吞吐量灵敏度

2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6140078

Di Kong, E. Mellios, David Halls, A. Nix, G. Hilton

引用次数: 12

Sensor context information for energy-efficient optimization of wireless procedures 传感器上下文信息用于无线程序的节能优化

2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6139648

Daniel Corujo, Marcelo Lebre, D. Gomes, R. Aguiar

{"title":"Sensor context information for energy-efficient optimization of wireless procedures","authors":"Daniel Corujo, Marcelo Lebre, D. Gomes, R. Aguiar","doi":"10.1109/PIMRC.2011.6139648","DOIUrl":"https://doi.org/10.1109/PIMRC.2011.6139648","url":null,"abstract":"The wide deployment of Wireless Local Area Networks (WLAN) we are witnessing today increases connectivity opportunities for mobile terminal devices, such as smartphones. However, continuous scanning for WLAN points of attachment can be a power exhausting mechanism for such battery-powered devices. These mobile devices, besides being equipped with different wireless access interfaces, are also coupled with sensors such as accelerometer, GPS, luminance and magnetic compass. In fact, sensors are increasingly being coupled into different devices and environments and are able to convey sensing information through networks into decision entities able to optimize different processes. In this paper we propose a framework where media independent sensing information is used to enhance wireless link management towards energy-efficiency. This framework enables the dissemination of sensing information towards local and remote decision entities, enhancing other processes (e.g. mobility) with sensing information in order to provide true Ambient Intelligence scenarios. We introduce this framework into a wireless management scenario able to provide energy-efficient optimal network connectivity.","PeriodicalId":262660,"journal":{"name":"2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123486545","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

Anchorless localization with local manifold flattening 局部流形平坦化的无锚点定位

2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6139708

D. Popescu, M. Hedley, T. Sathyan

引用次数: 2

Analytical evaluation of LTE uplink performance in the IMT-Advanced Indoor Hotspot scenario IMT-Advanced室内热点场景下LTE上行性能分析评估

2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6139782

M. Mühleisen, B. Walke

引用次数: 7

Adaptive spectrum sensing of wireless microphones with noise uncertainty 噪声不确定无线麦克风的自适应频谱感知

2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2011-09-01 DOI: 10.1109/PIMRC.2011.6140000

Mai H. Hassan, Omar A. Nasr

{"title":"Adaptive spectrum sensing of wireless microphones with noise uncertainty","authors":"Mai H. Hassan, Omar A. Nasr","doi":"10.1109/PIMRC.2011.6140000","DOIUrl":"https://doi.org/10.1109/PIMRC.2011.6140000","url":null,"abstract":"Many spectrum sensing techniques have been proposed in the literature to enable cognitive radio technology. However, their reliability when primary users have very low signal-to-noise ratio (SNR) in the presence of noise uncertainty remains a challenging problem. This paper focuses on detecting wireless microphone signals in the presence of noise uncertainty. Power Spectrum Density (PSD)-based sensing has been proposed in the literature as the best sensing algorithm for wireless microphones. However, when there is noise uncertainty, PSD-based sensing performance is severely degraded. To solve this problem, eignevalues-based blind sensing, which does not need noise information, have been proposed. In this paper, we present a new adaptive spectrum sensing algorithm that outperforms both PSD-based sensing and the eigenvalues-based sensing in the presence of noise uncertainty. The algorithm combines the decisions of the two algorithms, and then, adapts the decision threshold required for the PSD-based sensing in an iterative way. Simulation results show that the proposed spectrum sensing algorithm outperforms the PSD-based sensing in the presence of 1 dB noise uncertainty by more than 2 dBs. At the same level of noise uncertainty, our algorithm outperforms the eigenvalue-based sensing by 1.2 dBs.","PeriodicalId":262660,"journal":{"name":"2011 IEEE 22nd International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124618526","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: 5