2010 16th Asia-Pacific Conference on Communications (APCC)最新文献_第4页

Improved area estimates for localization in wireless sensor networks 改进的无线传感器网络定位区域估计

2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679694

V. A. Pillai, W. Seah, Y. Chew

引用次数: 1

On increasing the spectral efficiency more than 100% by user-in-the-control-loop 通过用户在控制环将频谱效率提高到100%以上

2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679756

R. Schoenen

{"title":"On increasing the spectral efficiency more than 100% by user-in-the-control-loop","authors":"R. Schoenen","doi":"10.1109/APCC.2010.5679756","DOIUrl":"https://doi.org/10.1109/APCC.2010.5679756","url":null,"abstract":"OFDMA has become the key technology for future cellular wireless networks like the IMT-Advanced systems IEEE 802.16m and 3GPP LTE-A. The advantage of allowing different modulation&coding schemes (PhyModes) adaptively for each radio resource is at the same time a new disadvantage because the performance is now distance-dependent from the base station (BS) and the total spectral efficiency depends on how user terminals (UTs) are provided with service opportunities. Instead of increasing the effort to support cell-edge users with high data rates this paper investigates the chances of letting the user participate in the process such that his mobility becomes utility-driven, in a similar way the user behaves in 802.11 hotspot areas. The user's willingness to move to regions of higher SINR must be supported by a display of the current situation (and indications where to move) plus a utility model (lower cost or higher data rate) which motivates moving a distance monotonic in the utility value. By giving input to the user and utilizing the output of his behavior the user becomes a member of the control loop, in a system theoretic sense. The paper shows numeric results of common scenarios and compares the old and new paradigms.","PeriodicalId":402292,"journal":{"name":"2010 16th Asia-Pacific Conference on Communications (APCC)","volume":"67 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114528431","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: 18

Adaptive Beacon Rate Adjusting mechanism for safety communication in cooperative IEEE 802.11p-3G vehicle-infrastructure systems 协同IEEE 802.11p-3G车辆基础设施系统安全通信的自适应信标速率调整机制

2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679988

Yufei Feng, Yingtian Du, Zhanyang Ren, Zi Wang, Yu Liu, Lin Zhang

引用次数: 13

Opportunistic node authentication in intermittently connected mobile ad hoc networks 间歇连接移动自组网中的机会节点认证

2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679991

Yaozhou Ma, A. Jamalipour

{"title":"Opportunistic node authentication in intermittently connected mobile ad hoc networks","authors":"Yaozhou Ma, A. Jamalipour","doi":"10.1109/APCC.2010.5679991","DOIUrl":"https://doi.org/10.1109/APCC.2010.5679991","url":null,"abstract":"Data communication over intermittently connected mobile ad hoc networks (ICMANs) can be carried out by opportunistically employment of mobility nature of nodes and the storage space of all nodes. However, due to intermittent connectivity, security schemes introduced for the conventional mobile ad hoc networks (MANETs) cannot be directly deployed over ICMANs for node authentication. Therefore, this paper adopts the nodes' mobilities to implement the (t, n) threshold secret sharing and identity-based cryptography (IBC) over ICMANs. Such (t, n) based IBC can subsequently be utilized to facilitate node authentication to defend against the malicious attacks in the ICMANs context. In the proposed security scheme, the master private key of IBC is shared by n distributed private key generators (PKGs), while each node needs to employ its mobility nature to contact at least t-out-of-n PKGs to reconstruct its own private key. To overcome the routing-security interdependence cycle, only face-to-face based node authentication is employed. In other words, authentication and key establishment between nodes and distributed PKGs is only allowed whenever they encounter each other directly. Delay performance of such (t, n) based IBC in the ICMANs context is accordingly modeled and evaluated.","PeriodicalId":402292,"journal":{"name":"2010 16th Asia-Pacific Conference on Communications (APCC)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125838917","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

MBER-BER uplink power control method in cellular radio systems 蜂窝无线电系统中MBER-BER上行功率控制方法

2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679752

Chih-Kai Wang, Cheng-Ming Chen, P. Kuo, Pangan Ting

引用次数: 0

An aggressive ONU sleep control scheme that squeezes sleep time into time to transmit data 一种积极的ONU睡眠控制方案，将睡眠时间压缩为传输数据的时间

2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679697

Manabu Yoshino, N. Oota, J. Kani, Hirotaka Nakamura, N. Yoshimoto, H. Hadama

{"title":"An aggressive ONU sleep control scheme that squeezes sleep time into time to transmit data","authors":"Manabu Yoshino, N. Oota, J. Kani, Hirotaka Nakamura, N. Yoshimoto, H. Hadama","doi":"10.1109/APCC.2010.5679697","DOIUrl":"https://doi.org/10.1109/APCC.2010.5679697","url":null,"abstract":"This paper proposes an aggressive ONU sleep control scheme that squeezes sleep time into the time used to transmit data for power saving in passive optical network systems. Unlike current schemes it is effective even in heavily congested situations. To expand the applicability of the ONU sleep control scheme, we propose three major changes to the sleep control and dynamic bandwidth assignment. The first is to change the sleep trigger from the existence of buffered data to the existence of permission to transmit data. The second is to increase the burst length to the limit of the allowable delay variation to increase the sleep time. The third is to compensate for the lack of bandwidth requests from ONUs during sleep time to realize bandwidth fairness. Using the proposed scheme, the results show a one hundred thousand-fold expansion in the applicable range of sleep control and a four-fold improvement in power saving on average under highly congested conditions. Finally, the relation between the ONU load and the minimum sleep time is also discussed. The realistic minimum sleep time required by the proposed scheme is clearly shown.","PeriodicalId":402292,"journal":{"name":"2010 16th Asia-Pacific Conference on Communications (APCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131386878","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

The capacity of cognitive ad hoc networks 认知特设网络的能力

2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679698

Seungmo Kim, Koon-Shik Cho, Hak-Sun Kim

引用次数: 4

On the impact of realistic control channel constraints in UTRAN LTE TDD system 现实控制信道约束对UTRAN LTE TDD系统的影响

2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679764

L. Jingxiu, J. Wigard, Guan Hao, D. Laselva, F. Frederiksen

引用次数: 4

MIMO capacity estimation based on single and dual-polarization MIMO channel measurements 基于单极化和双极化MIMO信道测量的MIMO容量估计

2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679716

S. Nanba, Noriaki Miyazaki, Yuuki Hirota, Y. Kishi

{"title":"MIMO capacity estimation based on single and dual-polarization MIMO channel measurements","authors":"S. Nanba, Noriaki Miyazaki, Yuuki Hirota, Y. Kishi","doi":"10.1109/APCC.2010.5679716","DOIUrl":"https://doi.org/10.1109/APCC.2010.5679716","url":null,"abstract":"Multiple-Input Multiple-Output (MIMO) wireless system is one of the most promising technologies for providing a large transmission capacity without expanding the frequency band in cellular mobile systems. This paper focuses on 2×2 MIMO capacity estimation through propagation measurements at 2GHz band. The authors conducted the measurement campaign in two regions in Fujimino (Saitama prefecture) and Yokohama (Kanagawa prefecture) Japan. The former is a typical residential area and the latter is an urban area. The paper compares MIMO spatial multiplexing efficiency in terms of the eigenvalue ratio between the single and orthogonal dual-polarization antenna configurations. The eigenvalue ratio is characterized by two parameters. One is cross-polarization discrimination (XPD) and the other is the normalized received signal strength indicator (RSSI), which represents the difference from the RSSI when free space propagation is assumed. It is verified that the MIMO capacity of the dual-polarization can be estimated from just the SNR because the dependency of the eigenvalue ratio on the propagation environment is small. In contrast, that of the single-polarization needs to consider both the eigenvalue ratio and the SNR because the eigenvalue ratios change significantly due to the propagation environment.","PeriodicalId":402292,"journal":{"name":"2010 16th Asia-Pacific Conference on Communications (APCC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122284452","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: 8

A novel structure of high rate (3,L) regular QC-LDPC codes for magnetic recording channels 磁记录信道高速率(3,l)规则QC-LDPC码的新结构

2010 16th Asia-Pacific Conference on Communications (APCC) Pub Date : 2010-10-01 DOI: 10.1109/APCC.2010.5679760

M. Kupimai, V. Imtawil, Anupap Meesomboon, Puripong Suthisopapan

引用次数: 1