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Performance of Ultra-Wideband Transmission over 60GHz WPAN Channel 60GHz WPAN信道超宽带传输性能研究
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342663
Wei Li
{"title":"Performance of Ultra-Wideband Transmission over 60GHz WPAN Channel","authors":"Wei Li","doi":"10.1109/ISWPC.2007.342663","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342663","url":null,"abstract":"In this paper we evaluate the system performance and outage probability of impulse radio ultra-wideband (UWB) transmission over the practical 60GHz wireless personal area network (WPAN) channel. The modulation scheme employed is DS-BPSK. A general system capacity and performance evaluation approach based on moment generation function (MGF) is introduced. Based on the current IEEE wireless personal area network (WPAN) standard documents, different transmission scenarios have been explored and the performances with RAKE reception has been obtained. The channel model is based on the recent work of IEEE 802.15 WPAN group. Analysis on symbol error probability (SEP) and outage probabilities are provided and numerical results are given to illustrate the system performance","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"53 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134033690","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
Always Best Located, a pervasive positioning system 永远最佳定位，一个无处不在的定位系统
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342669
L. Reyero, G. Delisle
{"title":"Always Best Located, a pervasive positioning system","authors":"L. Reyero, G. Delisle","doi":"10.1109/ISWPC.2007.342669","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342669","url":null,"abstract":"A new concept called always best located (ABL) is introduced to achieve an indoor-outdoor pervasive positioning system. Based upon currently deployed technologies, this positioning system is shown to meet the requirements of both coverage and radio localization accuracy. Results issued of an intensive measurements campaign are used to assess the value of the predicted results","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126937022","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
NAES: A Natural Adaptive Exponential Smoothing for Channel Prediction in WLANs NAES:用于无线局域网信道预测的自然自适应指数平滑
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342650
Jeandro M. Bezerra, Rudy Braquehais, F. Roberto, Jorge Silva, Marcia Fernandez, Thelmo P. de Araujo, Celestino Junior, Pablo Ximenes
{"title":"NAES: A Natural Adaptive Exponential Smoothing for Channel Prediction in WLANs","authors":"Jeandro M. Bezerra, Rudy Braquehais, F. Roberto, Jorge Silva, Marcia Fernandez, Thelmo P. de Araujo, Celestino Junior, Pablo Ximenes","doi":"10.1109/ISWPC.2007.342650","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342650","url":null,"abstract":"The advent of wireless networks has increased the demand for research greatly. Context-aware applications must adapt to the environment in which they are inserted, and, for this, information on both device's hardware and the characteristics of the environment is crucial. In this work, we propose a method - called natural adaptive exponential smoothing (NAES) - to describe and forecast, in real time, the channel behavior of IEEE 802.11 WLAN networks. The NAES method uses a variation of the exponential smoothing technique to compute the channel quality indicators, namely the received signal strength (RSS) and the link quality. A comparison with the results obtained by the Trigg and Leach (1967)(TL) method shows that NAES outperforms TL method.","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116598305","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
Optimal Allocation of Bandwidth and Power Resources to OFDMA VoIP Channels OFDMA VoIP信道带宽和功率的优化分配
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342600
Patrick Hosein
{"title":"Optimal Allocation of Bandwidth and Power Resources to OFDMA VoIP Channels","authors":"Patrick Hosein","doi":"10.1109/ISWPC.2007.342600","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342600","url":null,"abstract":"The fourth generation of wireless networks will all use OFDMA (orthogonal frequency domain multiple access) technology. In the forward link of an OFDMA network, each traffic and control channel within a frame must be allocated power, bandwidth (number of subcarriers) and time (number of OFDMA symbols) resources. This flexibility is one of the advantages of OFDMA but requires more sophisticated resource management than third generation networks. In this paper we focus on the power and bandwidth allocation problems for the downlink. The power allocated to a channel can be varied continuously however the bandwidth allocation must be provided in discrete units (number of subcarriers). For some applications, such as voice over IP (VoIP), the bandwidth allocation is fixed and closed loop power control is used to maintain the required frame error rate (FER). In this paper we demonstrate that by varying resources in the bandwidth dimension in addition to the power dimension one can increase the efficiency of the system. We demonstrate the gains through illustrative examples and propose a practical algorithm for achieving these gains","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122359583","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
Adaptive Interference-Aware Multi-Channel Clustering Algorithm in a ZigBee Network in the Presence of WLAN Interference 存在WLAN干扰的ZigBee网络中自适应干扰感知多通道聚类算法
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342601
M. Kang, J. Chong, Hyesun Hyun, S. Kim, B. H. Jung, D. Sung
{"title":"Adaptive Interference-Aware Multi-Channel Clustering Algorithm in a ZigBee Network in the Presence of WLAN Interference","authors":"M. Kang, J. Chong, Hyesun Hyun, S. Kim, B. H. Jung, D. Sung","doi":"10.1109/ISWPC.2007.342601","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342601","url":null,"abstract":"In ubiquitous networking environments, we generally need two or more heterogeneous communication systems coexisting in a single place. Especially, wireless local area networks (WLANs) based on IEEE 802.11 specifications and wireless personal area networks (WPANs) based on IEEE 802.15.4b or g specifications need to coexist in the same Industrial, Science and Medial (ISM) band. If the WPAN communication coverage is expanded using a cluster-tree network topology, then the 802.15.4 network is more susceptible to interference from neighboring WLANs. In this paper, we propose an adaptive interference-aware clustering algorithm using multiple channels in a WPAN in the presence of WLAN interference. The algorithm includes interference detection and avoidance schemes to adaptively reconfigure multiple channels in an IEEE 802.15.4 cluster-tree network to avoid interference from WLANs. To evaluate the performance of the proposed algorithm, the frame error rate (FER) is measured in a real network testbed. The measurement result shows that the proposed algorithm is effective in an IEEE 802.15.4 cluster-tree network in the presence of multiple IEEE 802.11 interferers","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125487695","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: 91
Ubiquitous Wearable Computer (UWC)-Aided Coexistence Algorithm in an Overlaid Network Environment of WLAN and ZigBee Networks 泛在可穿戴计算机(UWC)辅助下的WLAN和ZigBee网络叠加网络环境共存算法
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342603
B. H. Jung, J. Chong, Seong Hoon Jeong, H. Hwang, S. Kim, M. Kang, D. Sung
{"title":"Ubiquitous Wearable Computer (UWC)-Aided Coexistence Algorithm in an Overlaid Network Environment of WLAN and ZigBee Networks","authors":"B. H. Jung, J. Chong, Seong Hoon Jeong, H. Hwang, S. Kim, M. Kang, D. Sung","doi":"10.1109/ISWPC.2007.342603","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342603","url":null,"abstract":"Emerging ubiquitous wireless networks are being spread widely. Ubiquitous wearable computers (UWCs) which may contain various communication protocol modules such as WLAN, Bluetooth, ZigBee, Wibro, and CDMA can be a solution in this era to support the ubiquitous wireless network environment. In ubiquitous wireless environments, ubiquitous wearable computers (UWCs) with multiple communication modules can control each communication module as a coordinator and communicate with other devices containing WLAN and ZigBee modules in the surrounding networks. Since IEEE802.15.4 ZigBee and IEEE802.11b WLAN share the same 2.4 GHz ISM band, WLAN causes severe interference to ZigBee devices due to higher transmission power in a large bandwidth of 22 MHz. We propose a UWC-aided coexistence algorithm in an overlaid network environment of WLAN and ZigBee networks to solve this problem, and measure the performance of WLAN and ZigBee communication modules for two scenarios in a real network testbed in terms of frame error rate (FER) and goodput.","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"371 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124179652","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: 16
Ultrasonic Power and Data Link for Wireless Implantable Applications 用于无线植入式应用的超声波电源和数据链路
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342668
Satu Arra, Jarkko J. Leskinen, Janne Heikkila, Jukka Vanhala
{"title":"Ultrasonic Power and Data Link for Wireless Implantable Applications","authors":"Satu Arra, Jarkko J. Leskinen, Janne Heikkila, Jukka Vanhala","doi":"10.1109/ISWPC.2007.342668","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342668","url":null,"abstract":"Wireless implantable devices revolutionize the field of biomedical engineering as soon as satisfactory power supplies are conceived. This paper presents a novel ultrasound-based method for powering a battery-free electrical implant. Contrary to the commonly used RF and inductive methods, ultrasonic power transmission helps to avoid problems with electromagnetic coupling and offers for use a selection of data frequencies not limited by national regulations. The proof-of-concept data and power link is based on piezoelectric crystals. Measurements carried out in degassed water brought perspective to the feasibility of an ultrasonic link. Efficiencies of 21-35 % at distances between 5 mm and 105 mm were achieved","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129188320","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: 69
Integrating Perceptual, Device and Location Characteristics for Wireless Multimedia Transmission 集成感知、设备和位置特征的无线多媒体传输
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342657
T. Serif, G. Ghinea, A. Fongen
{"title":"Integrating Perceptual, Device and Location Characteristics for Wireless Multimedia Transmission","authors":"T. Serif, G. Ghinea, A. Fongen","doi":"10.1109/ISWPC.2007.342657","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342657","url":null,"abstract":"In this paper, we describe an investigation exploring user experiences of accessing streamed multimedia content, when that content is tailored according to perceptual, device and location characteristics. To this end, we have created pre-defined transmission profiles and stream perceptually tailored multimedia content to three different locations, each characterised by different infotainment requirements. In the light of our results, we propose that multimedia transmission to mobile and wireless devices should be made based on pre-defined profiles, which contains a combination of static (perceptual, device type, CPU speed, and display specifications) and dynamic information (streamed content type location of the device/user, context of the device/user). The evaluation of such a system showed that the users and service providers can gain from such an approach considerably, as user perceptions of quality were not detrimentally affected by QoS degradations. Consequently, service providers can utilise this information to effectively manage local network traffic and bandwidth","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128009784","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
Adding Motion Capability to the Spatial Channel Model 向空间通道模型添加运动能力
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342649
A. Rodriguez-Herrera, S. Jasper, D. Reed
{"title":"Adding Motion Capability to the Spatial Channel Model","authors":"A. Rodriguez-Herrera, S. Jasper, D. Reed","doi":"10.1109/ISWPC.2007.342649","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342649","url":null,"abstract":"The current definition of the spatial channel model (SCM), presents all the components needed to represent the spatial behavior of the propagation channel for a given mobile. These components are used to generate the complex channel samples that evolve with time, but the position of the mobile remains constant, this is known as quasi motion simulation. As the SCM proposes an independent set of channel parameters (powers, delays, angles of departure, and angles of arrival) per mobile, the current model is spatially incoherent, that is, two spatial positions having a small Euclidean distance have widely different channel parameters. This paper proposes a method to introduce spatial coherence to SCM to make it suitable for full-motion simulations. At the same time, the model is well suited for the evaluation of multi-antenna schemes like space division multiple access (SDMA) where modeling of off-beam interference is important. Also, the introduction of spatial coherence does not affect the extension of SCM for wider bandwidths.","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124109968","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
Symbol Mapping Diversity and Power Adjustment for High Speed Downlink Packet Access (HSDPA) 高速下行分组接入(HSDPA)的符号映射分集和功率调整
2007 2nd International Symposium on Wireless Pervasive Computing Pub Date : 2007-04-16 DOI: 10.1109/ISWPC.2007.342675
Mikael Gidlund
{"title":"Symbol Mapping Diversity and Power Adjustment for High Speed Downlink Packet Access (HSDPA)","authors":"Mikael Gidlund","doi":"10.1109/ISWPC.2007.342675","DOIUrl":"https://doi.org/10.1109/ISWPC.2007.342675","url":null,"abstract":"One of the central features of the high speed downlink packet access (HSDPA) concept is advanced physical layer retransmission scheduling employing soft combining gain, incremental redundancy, and low retransmission delays. This paper studies symbol mapping diversity in combination with power adjustment for HSDPA. If retransmission are requested, the bit-to-symbol mapping and transmission power is changed in every retransmission. Compared to the conventional HARQ schemes, our proposed scheme increases the throughput and decreases the average number of retransmissions significantly and reduce the power consumption in HSDPA","PeriodicalId":403213,"journal":{"name":"2007 2nd International Symposium on Wireless Pervasive Computing","volume":"189 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115479608","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
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