2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications最新文献

On the evaluation of fixed step closed loop power control for CDMA High Altitude Platforms (HAPs) communication channel CDMA高空平台通信信道固定步长闭环功率控制评价

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2008-12-08 DOI: 10.1109/PIMRC.2008.4699420

Iskandar, A. Kurniawan, H. Syaputra

{"title":"On the evaluation of fixed step closed loop power control for CDMA High Altitude Platforms (HAPs) communication channel","authors":"Iskandar, A. Kurniawan, H. Syaputra","doi":"10.1109/PIMRC.2008.4699420","DOIUrl":"https://doi.org/10.1109/PIMRC.2008.4699420","url":null,"abstract":"This paper describes the performance evaluation of fixed step closed loop power control algorithm in a novel wireless channel that is called High Altitude Platforms (HAPs). This new wireless delivery method is proposed as a complementary system in providing the next generation services in which the technology basically employs CDMA. In HAPs communication, the channel is predicted to have different characteristic compared to that in terrestrial channel. In this work, HAPs channel is modeled to follow Ricean fading distribution whose K factor is obtained based on experimental measurement. Fixed step power control algorithm is then computer simulated under such a channel to evaluate its performance. The performance is presented in terms of step size of the power control, users elevation angle, feedback delay, and SIR estimation error. We found the performance of fixed step closed loop power control in HAPs channel increases with the increase of step size and elevation angle. Feedback delay has insignificant effect to the power control performance. SIR estimation error degrades the performance of the power control compared with the true SIR estimation.","PeriodicalId":125554,"journal":{"name":"2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115170317","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

Cramér-Rao bound for DOA estimation with antenna arrays and UWB-OFDM signals for PAN applications 针对PAN应用的天线阵列和UWB-OFDM信号的DOA估计

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2008-12-08 DOI: 10.1109/PIMRC.2008.4699884

D. Fittipaldi, M. Luise

引用次数: 6

Secure personal network 安全的个人网络

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2008-12-08 DOI: 10.1109/PIMRC.2008.4699962

P. Anggraeni, N. Prasad, R. Prasad

{"title":"Secure personal network","authors":"P. Anggraeni, N. Prasad, R. Prasad","doi":"10.1109/PIMRC.2008.4699962","DOIUrl":"https://doi.org/10.1109/PIMRC.2008.4699962","url":null,"abstract":"Recently, Personal Networks (PNs) have been focused in supporting the userpsilas business and private activities without jeopardizing privacy and security of the users and their data. The support in business and private activities will take place through the userpsilas own personal network consisting of a core Personal Area Network (PAN) extended with clusters of remote devices which could be private, shared, or public and able to adapt to the quality of the network accessed. The extended PAN with its cluster communication with another PN forms a Federation of Personal Networks (PN-F). PN-F is a secure cooperation between different PNs, making services and resources available for the purpose of achieving a common goal, increasing the security requirements and challenges. The communication in this scenario can happen in various places (home, work, public places), involving various types of network infrastructure, between various types of hardware, and exchanging any kind of service. Context aware security manager (CASM) has been proposed to solve the PN security issue, putting all the security decision in the gateway between PAN and cluster or PN and another PN. CASM relies on providing security policy based on the context being given by user. So far, algorithm regarding how to input the context has not yet been defined. Furthermore, how CASM react upon the context in deciding what security action should be performed has also not yet been elaborated. This paper will analyze the impact of context to security. The paper will work as a continuation of CASM by elaborating further a proposed algorithm on defining the context parameters, quantifying context parameter so that CASM can make decision upon it, and optimizing the matrix of context information.","PeriodicalId":125554,"journal":{"name":"2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123100250","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: 2

Performance analysis of pilot-channel-assisted log-likelihood-ratio selective combining 导频辅助对数似然比选择性组合的性能分析

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2008-12-08 DOI: 10.1109/PIMRC.2008.4699415

Xiaoli Chu, R. Murch

引用次数: 0

Cognitive radio MAC protocol for WLAN 无线局域网的认知无线电MAC协议

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2008-12-08 DOI: 10.1109/PIMRC.2008.4699678

Qi Zhang, F. Fitzek, V. Iversen

{"title":"Cognitive radio MAC protocol for WLAN","authors":"Qi Zhang, F. Fitzek, V. Iversen","doi":"10.1109/PIMRC.2008.4699678","DOIUrl":"https://doi.org/10.1109/PIMRC.2008.4699678","url":null,"abstract":"To solve the performance degradation issue in current WLAN caused by the crowded unlicensed spectrum, we propose a cognitive radio (CR) media access protocol, C-CSMA/CA. The basic idea is that with cognitive radio techniques the WLAN devices can not only access the legacy WLAN unlicensed spectrum but opportunistically access any other under-utilized licensed spectrum without a license. The application scenario of C-CSMA/CA is infrastructure BSS (Basic Service Set) WLAN. C-CSMA/CA efficiently exploits the inherent characteristics of CSMA/CA to design distributed cooperative outband sensing to explore spectrum hole; moreover, it designs dual inband sensing scheme to detect primary user appearance. Additionally, C-CSMA/CA has the advantage to effectively solve the cognitive radio self-coexistence issues in the overlapping CR BSSs scenario. It also realizes station-based dynamic resource selection and utilization. It is compatible with any legacy WLAN (BSS) system. We develop and implement the simulation of C-CSMA/CA by OPNET. The simulation results show that C-CSMA/CA highly enhances throughput and reduces the queuing delay and media access delay.","PeriodicalId":125554,"journal":{"name":"2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116680740","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: 34

Minimising distance ambiguity through thresholding RSS measurements in wireless sensor networks 通过阈值RSS测量在无线传感器网络中最小化距离模糊

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2008-12-08 DOI: 10.1109/PIMRC.2008.4699643

C. Ladha, B. Sharif, C. Tsimenidis, N. A. A. Latiff

引用次数: 2

Iterative carrier frequency offset estimation and compensation for OFDMA uplink OFDMA上行链路的迭代载波频偏估计与补偿

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2008-12-08 DOI: 10.1109/PIMRC.2008.4699695

M. Movahedian, Y. Ma, R. Tafazolli

引用次数: 5

Toward cognitive radio handover management based on social agent technology for spectrum efficiency performance improvement of cellular systems 基于社会代理技术的蜂窝系统频谱效率性能改进的认知无线电切换管理研究

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2008-12-08 DOI: 10.1109/PIMRC.2008.4699853

J. Raiyn

引用次数: 11

Rateless coding on a wearable wireless network for Augmented Reality and biosensors 用于增强现实和生物传感器的可穿戴无线网络的无速率编码

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2008-12-08 DOI: 10.1109/PIMRC.2008.4699523

R. Razavi, M. Fleury, M. Ghanbari

引用次数: 2

On-demand device discovery enhancement of IEEE802.15.3 MAC for 60GHz WPAN system 针对60GHz WPAN系统的IEEE802.15.3 MAC按需设备发现增强

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications Pub Date : 2008-12-08 DOI: 10.1109/PIMRC.2008.4699552

Z. Lan, C. Pyo, F. Kojima, H. Harada, S. Kato

引用次数: 13