发布求助
文献互助 智能选刊 最新文献

2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)最新文献

筛选
英文 中文
On end-to-end security for Bluetooth/WAP and TCP/IP networks 关于蓝牙/WAP和TCP/IP网络的端到端安全性
2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488) Pub Date : 2000-12-17 DOI: 10.1109/ICPWC.2000.905845
S. Sengodan, D. Smith, M. Abou-Rizk
{"title":"On end-to-end security for Bluetooth/WAP and TCP/IP networks","authors":"S. Sengodan, D. Smith, M. Abou-Rizk","doi":"10.1109/ICPWC.2000.905845","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905845","url":null,"abstract":"With the convergence of the Internet protocol (IP) and wireless technologies such as Bluetooth and the wireless application protocol (WAP), a study on end-to-end security issues has become important. Differences in security algorithms and protocols between these technologies needs to be clearly understood in order to understand the impact on end-to-end security. This paper describes some of these aspects in the context of Bluetooth and WAP interfacing with IP networks. Various security services - key generation, authentication and confidentiality - are considered and compared.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130394622","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 for DS-CDMA systems with multistage HD-PIC 多级HD-PIC的DS-CDMA系统性能分析
2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488) Pub Date : 2000-12-17 DOI: 10.1109/ICPWC.2000.905788
R. van der Hofstad, M. J. Klok
{"title":"Performance analysis for DS-CDMA systems with multistage HD-PIC","authors":"R. van der Hofstad, M. J. Klok","doi":"10.1109/ICPWC.2000.905788","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905788","url":null,"abstract":"For a direct-sequence code division multiple access system with hard decision parallel interference cancellation (DS-CDMA with HD-PIC), we derive analytical results concerning the probability of a bit error. More precisely, we investigate the exponential rate H/sub k//sup (s)/ of a CDMA system with s stages of HD-PIC, with k users and processing gain equal to n, as n/spl rarr//spl infin/. The rate is a good measure of performance and allows us to compare the performance after applying several stages of HD-PIC. Furthermore, we derive results for the asymptotic behaviour of the exponential rates H/sub k//sup (s)/ as k/spl rarr//spl infin/. Finally, we investigate what happens when, for k fixed, we perform many stages of HD-PIC. These results can be used to guarantee a small BEP by applying a number of HD-PIC stages that depends on the number of users. The results show analytically that HD-PIC significantly improves performance. This conference paper is based upon and extends results and techniques of Van der Hofstad et al. (2000), that we briefly discuss.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114503271","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
Low complexity ACELP coding of 7 kHz speech and audio at 16 kbps 低复杂度ACELP编码7千赫语音和音频在16 kbps
2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488) Pub Date : 2000-12-17 DOI: 10.1109/ICPWC.2000.905839
A. Kumar
{"title":"Low complexity ACELP coding of 7 kHz speech and audio at 16 kbps","authors":"A. Kumar","doi":"10.1109/ICPWC.2000.905839","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905839","url":null,"abstract":"The 7 kHz audio bandwidth is increasingly being considered for natural quality communications, especially for binaural, hands-free listening situations such as in teleconferencing and digital AM broadcasting. Based on detailed performance comparisons of several alternative designs, we shortlisted an ACELP-based 7 kHz coder design for performance optimization. This paper presents several low-complexity design strategies which significantly reduce the computational complexity of the encoder and decoder while not compromising on the reconstructed signal quality. These include: (a) open-loop pitch estimation and reduced search adaptive codebook; (b) open-loop pitch estimation based on pre-search in downsampled signal domain; (c) LSF quantization using a combination of scalar and vector quantization; (d) a novel reduced complexity search of algebraic codebook; and (e) efficient postfiltering in the decoder. The computational complexity of the encoder and decoder modules of three ACELP coders with different bit allocations are compared.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116060503","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
Outage analysis of cellular CDMA for integrated voice and data services with correlated signal and interference 具有相关信号和干扰的蜂窝CDMA综合话音和数据业务中断分析
2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488) Pub Date : 2000-12-17 DOI: 10.1109/ICPWC.2000.905813
S. Kundu, S. Chakrabarti
{"title":"Outage analysis of cellular CDMA for integrated voice and data services with correlated signal and interference","authors":"S. Kundu, S. Chakrabarti","doi":"10.1109/ICPWC.2000.905813","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905813","url":null,"abstract":"Probability of outage is an important parameter for capacity evaluation of a cellular CDMA system. A mathematical formulation with closed form expression for outage probability for integrated voice and data services has been proposed. The correlation between signal and interference is also considered in evaluating the outage. It is observed that considering the correlation a significant reduction in outage probability is obtained compared to the model of Ayyagari et al., 1999.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124823309","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
A nonzero intermediate frequency likelihood acquisition scheme for CDMA system 一种用于CDMA系统的非零中频似然采集方案
2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488) Pub Date : 2000-12-17 DOI: 10.1109/ICPWC.2000.905904
Ma Yu-chu, Gu Xuemai, Zhang Nai-tong
{"title":"A nonzero intermediate frequency likelihood acquisition scheme for CDMA system","authors":"Ma Yu-chu, Gu Xuemai, Zhang Nai-tong","doi":"10.1109/ICPWC.2000.905904","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905904","url":null,"abstract":"A nonzero intermediate frequency (IF) likelihood acquisition scheme for PN codes is introduced in this paper. The received signal is first downconverted to IF, and then direct sampled in IF using a 1-bit A/D converter. After the digitalization, the sampled data is detected using a hybrid likelihood acquisition scheme. Using this structure, problems, due to large noise figure of the analog mixer or active filters or due to amplitude and phase imbalance between low-frequency in-phase and quadrature-phase channels, can be avoided. An algorithm which allows easy implementation of the acquisition scheme is also derived. The performance and algorithm are verified by computer simulation.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122972958","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
Frequency look-ahead and link state history based interference avoidance in wireless picocellular networks 无线微蜂窝网络中基于频率前瞻和链路状态历史的干扰避免
2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488) Pub Date : 2000-12-17 DOI: 10.1109/ICPWC.2000.905853
D. Anvekar, M. Kapoor
{"title":"Frequency look-ahead and link state history based interference avoidance in wireless picocellular networks","authors":"D. Anvekar, M. Kapoor","doi":"10.1109/ICPWC.2000.905853","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905853","url":null,"abstract":"In this paper, we present a scheme for combating the problem of interference in frequency hopping indoor wireless communication systems such as Bluetooth. Other methods in reported literature involve adapting the hopping sequence to avoid bad frequencies but they are unsuitable for Bluetooth which has a fixed hopping sequence for a picocell. The proposed scheme is based on the concept of frequency look-ahead and maintaining link state history (LSH) as a table. Look-ahead is employed to know a priori the frequencies that might be used for transmission in the near future. LSH is used to predict the probability of future interference. The paper gives two methods of recording LSH, the first based on the receipt of ACKs and NAKs from the slave and the second based on slave side monitoring of the channel. Before transmitting, the master checks the LSH table to select the slave and the packet size to transmit, such that both the transmissions to and from that slave have a low probability of error. By choosing the right packet size, the master is able to mask bad frequencies and does not need to change the hopping sequence in any way.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114972457","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
Comparative study of partitioned and parallel concatenated convolutional codes with puncturing 带穿刺的分割卷积码与并行级联卷积码的比较研究
2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488) Pub Date : 2000-12-17 DOI: 10.1109/ICPWC.2000.905805
K. Soyjaudah, G. Ramsawock
{"title":"Comparative study of partitioned and parallel concatenated convolutional codes with puncturing","authors":"K. Soyjaudah, G. Ramsawock","doi":"10.1109/ICPWC.2000.905805","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905805","url":null,"abstract":"We design and implement the partitioned convolutional code (PCC) and the parallel-concatenated nonrecursive convolutional code (PCNCC). A comparison of the two codes is then carried out based on the following aspects: BER, encoder and decoder complexity, effective code rate, and throughput. It is shown that the PCNCC has identical error performance to the PCC but with less hardware complexity and a slightly higher effective code rate. Also, puncturing is used to increase the code rate of the PCNCC and computer simulation results show that the best PCNCC are those in which the component encoders are derived from the basic encoder.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126180865","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
Downlink transmit diversity: feedback efficiency and robustness 下行传输分集:反馈效率和鲁棒性
2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488) Pub Date : 2000-12-17 DOI: 10.1109/ICPWC.2000.905764
S. Nagaraj, Yih-Fang Huang
{"title":"Downlink transmit diversity: feedback efficiency and robustness","authors":"S. Nagaraj, Yih-Fang Huang","doi":"10.1109/ICPWC.2000.905764","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905764","url":null,"abstract":"A recently introduced method for closed-loop transmit diversity (see Nagaraj, S. and Huang, Y.F., Asilomar Conference on Signals, Systems and Computers, 2000) is further analyzed in this paper. Specifically, the amount of power saving possible due to the inherent feature of selective feedback is quantified via a capacity analysis. An optimal adaptive algorithm for channel estimation, in the sense of maximum likelihood, is derived to provide robustness against feedback errors, which arise due to incorrect detection at the mobile.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130588419","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
A method of data transfer control during handoffs in mobile multimedia networks 移动多媒体网络中切换期间的数据传输控制方法
2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488) Pub Date : 2000-12-17 DOI: 10.1109/ICPWC.2000.905774
P. Venkataram, S. Laxman, R. Rajavelsamy
{"title":"A method of data transfer control during handoffs in mobile multimedia networks","authors":"P. Venkataram, S. Laxman, R. Rajavelsamy","doi":"10.1109/ICPWC.2000.905774","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905774","url":null,"abstract":"In this paper, a new data transfer control scheme is proposed to provide a high degree of data transfer during handoffs for multimedia traffic carried in microcellular, picocellular, and high speed wireless networks. The method performs efficient buffering of the data at the base station using toggled buffers. The method has been tested on in-house wired/wireless networks. The results have shown enormous improvement in the continuity of data transfer during multiple handoffs while running multimedia applications such as video-on-demand (VoD) and audio-on-demand (AoD).","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"3 S1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120851488","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 evaluation of a wireless ad hoc network: flexible radio network (FRN) 一种无线自组织网络:柔性无线网络(FRN)的性能评价
2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488) Pub Date : 2000-12-17 DOI: 10.1109/ICPWC.2000.905835
M. Sugano, T. Araki, M. Murata, T. Hatauchi, Y. Hosooka
{"title":"Performance evaluation of a wireless ad hoc network: flexible radio network (FRN)","authors":"M. Sugano, T. Araki, M. Murata, T. Hatauchi, Y. Hosooka","doi":"10.1109/ICPWC.2000.905835","DOIUrl":"https://doi.org/10.1109/ICPWC.2000.905835","url":null,"abstract":"In an ad hoc wireless network system, wireless terminals can autonomously construct a network and directly communicate with each other without using a wired network. A flexible radio network is one of the ad hoc wireless network systems which has been operational in recent years. In the flexible radio network, an original communication protocol is implemented to obtain reliability of communication. We evaluate the performance by means of simulations for the data-link protocol and routing protocol of the flexible radio network. We first show the performance when system parameters are changed to examine how these parameters affect the system performance. Furthermore, we investigate the performance improvement by changing the network configuration.","PeriodicalId":260472,"journal":{"name":"2000 IEEE International Conference on Personal Wireless Communications. Conference Proceedings (Cat. No.00TH8488)","volume":"07 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127195801","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: 7
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信