GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489)最新文献_第9页

Performance evaluation of an iterative PMEPR-reducing technique for OFDM transmission OFDM传输中一种迭代pmepr降低技术的性能评估

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489) Pub Date : 2003-12-01 DOI: 10.1109/GLOCOM.2003.1258195

R. Dinis, A. Gusmão

引用次数: 5

Power techniques for blind adaptive channel estimation in CDMA systems CDMA系统中盲自适应信道估计的功率技术

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489) Pub Date : 2003-12-01 DOI: 10.1109/GLOCOM.2003.1258651

X. Doukopoulos, G. Moustakides

引用次数: 16

Detecting malicious packet dropping using statistically regular traffic patterns in multihop wireless networks that are not bandwidth limited 在不受带宽限制的多跳无线网络中，使用统计规则流量模式检测恶意丢包

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489) Pub Date : 2003-12-01 DOI: 10.1109/GLOCOM.2003.1258776

Rajesh N. Rao, G. Kesidis

{"title":"Detecting malicious packet dropping using statistically regular traffic patterns in multihop wireless networks that are not bandwidth limited","authors":"Rajesh N. Rao, G. Kesidis","doi":"10.1109/GLOCOM.2003.1258776","DOIUrl":"https://doi.org/10.1109/GLOCOM.2003.1258776","url":null,"abstract":"Ad hoc networks are gaining presence with the proliferation of cheap wireless devices and the need to keep them connected. Individual applications and larger missions, such as those of tactical sensor networks, require secure data transmission among wireless devices. Security remains a major challenge for such networks. Current protocols employ encryption and authentication techniques for secure message exchange, but given the limitations and innately insecure nature of ad-hoc networks, such mechanisms may not suffice. A security breach can, for example, be a network-level denial-of-service (DoS) attack, passive eavesdropping, or physical layer jamming to degrade communication channels. In a multihop network, an intruder node can degrade communication quality by simply dropping packets that are meant to be relayed (forwarded). The network could then misinterpret the cause of packet loss as congestion instead of malicious activity. In this paper, we suggest that traffic transmission patterns be selected to facilitate verification by a receiver. Such traffic patterns are used in concert with suboptimal MAC that preserves the statistical regularity from hop to hop. This general technique for intrusion detection is therefore suitable for networks that are not bandwidth limited but have strict security requirements, e.g., certain kinds of tactical sensor networks.","PeriodicalId":301154,"journal":{"name":"GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489)","volume":"235 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115478022","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: 53

Performance evaluation of highway mobile infostation networks 公路移动信息站网络性能评价

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489) Pub Date : 2003-12-01 DOI: 10.1109/GLOCOM.2003.1258376

Wing Ho A. Yuen, R. Yates, C. Sung

引用次数: 13

Phase-sweep transmit diversity (PSTD) for shared data channels: a critical analysis 共享数据通道的相位扫描传输分集(PSTD):一个关键的分析

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489) Pub Date : 2003-12-01 DOI: 10.1109/GLOCOM.2003.1258624

A. L. Moustakas, Pantelis Monogioudis

{"title":"Phase-sweep transmit diversity (PSTD) for shared data channels: a critical analysis","authors":"A. L. Moustakas, Pantelis Monogioudis","doi":"10.1109/GLOCOM.2003.1258624","DOIUrl":"https://doi.org/10.1109/GLOCOM.2003.1258624","url":null,"abstract":"We propose a promising multi-antenna scheme specifically suitable for hybrid code and time division multiplexed (CTDM) high speed shared channels commonly employed in 3GPP and 3GPP2 standards, such as HS-DPA, 1xEVDO (HDR), and 1xEVDV. The scheme is called phase sweep transmit diversity (PSTD) and was originally proposed for power controlled dedicated voice channels. PSTD is shown to provide the benefits of beamforming without the requirement for channel or weight information feedback from the receiver to the transmitter. We evaluate the benefits of PSTD for two antenna configurations: (a) the so-called BF-2V configuration that encompasses two closely-spaced (/spl lambda//2) vertically polarized antenna columns: (b) the so-called DIV-2V antenna configurations, in which the two antenna columns are widely-spaced (10-20 /spl lambda/). When compared to selection transmit diversity (STD) and the baseline case of a single antenna transmission, PSTD offers significant gains for low-tier mobility users. In addition, the closely spaced antenna configuration produces consistently higher sector throughput as compared to the widely spaced configuration.","PeriodicalId":301154,"journal":{"name":"GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114603246","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

Accelerating Bluetooth inquiry for personal area networks 加速个人局域网蓝牙查询

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489) Pub Date : 2003-12-01 DOI: 10.1109/GLOCOM.2003.1258329

G. Záruba, I. Chlamtac

引用次数: 15

Performance evaluation of survivable multifiber WDM network 可生存多光纤WDM网络的性能评估

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489) Pub Date : 2003-12-01 DOI: 10.1109/GLOCOM.2003.1258692

Yuanqiu Luo, N. Ansari

引用次数: 10

An improved personal CA for personal area networks 改进的个人局域网CA

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489) Pub Date : 2003-12-01 DOI: 10.1109/GLOCOM.2003.1258485

R. Deng, F. Bao

引用次数: 2

An adaptive bandwidth reservation scheme in multimedia wireless networks 多媒体无线网络中的自适应带宽预留方案

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489) Pub Date : 2003-12-01 DOI: 10.1109/GLOCOM.2003.1258751

Xiang Chen, Yuguang Fang

引用次数: 10

A low-complexity blind QAM receiver 一种低复杂度盲QAM接收机

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489) Pub Date : 2003-12-01 DOI: 10.1109/GLOCOM.2003.1258616

Hichem Besbes, Alex W. Paek

{"title":"A low-complexity blind QAM receiver","authors":"Hichem Besbes, Alex W. Paek","doi":"10.1109/GLOCOM.2003.1258616","DOIUrl":"https://doi.org/10.1109/GLOCOM.2003.1258616","url":null,"abstract":"We present a low complexity blind receiver tailored for QAM signals. Various simplifications are introduced in carrier/phase recovery and adaptive equalizer algorithms. For blind equalization, the multi-modulus algorithm (MMA) and its generalized version (GMMA) are very promising. They combine the benefits of the reduced constellation algorithm (RCA) and the constant modulus algorithm (CMA) (Yang, J. et al., IEEE J. Select. Areas Commun., vol.20, no.5, p.997-1015, 2002). We propose a low-complexity version of these algorithms by modifying the error function and applying the sign data LMS algorithm for coefficient adaptation. The proposed algorithms use fewer multiplication operations than conventional ones, and ensure a good rate of convergence with an acceptable steady state. Convergence analysis, in the mean sense, of the proposed algorithm is presented. For carrier/phase recovery, we propose an algorithm that has two modes of operation - acquisition and tracking. The overall proposed scheme is promising, especially for applications dealing with a high baud rate over a severe channel, such as VDSL systems, where the required number of taps for the equalizer is large. Computer simulations are presented to support our approach.","PeriodicalId":301154,"journal":{"name":"GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124502816","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