Proceedings of 1997 Wireless Communications Conference最新文献

Ceramic packaging technologies for microwave applications 微波应用陶瓷封装技术

Proceedings of 1997 Wireless Communications Conference Pub Date : 1997-08-11 DOI: 10.1109/WCC.1997.622270

O. Salmela, P. Ikalainen

引用次数: 5

New approach for finding DOA in array antennas using cyclostationarity 利用循环平稳性求阵列天线DOA的新方法

Proceedings of 1997 Wireless Communications Conference Pub Date : 1997-08-11 DOI: 10.1109/WCC.1997.622250

H. Tsuji, J. Xin, S. Yoshimoto, A. Sano

引用次数: 3

Broadband, reduced-size monopoles for wireless data communications 用于无线数据通信的宽带小尺寸单极子

Proceedings of 1997 Wireless Communications Conference Pub Date : 1997-08-11 DOI: 10.1109/WCC.1997.622282

J. Mclean, G. Crook

引用次数: 2

A simple solution for high speed wireless LAN: active fading and PSK-RZ 高速无线局域网的简单解决方案:有源衰落和PSK-RZ

Proceedings of 1997 Wireless Communications Conference Pub Date : 1997-08-11 DOI: 10.1109/WCC.1997.622278

T. Takeuchi, T. Tanaka

引用次数: 2

Affordable MMIC technology trade offs for millimeter-wave communications-a matter of choice 价格合理的MMIC技术与毫米波通信相权衡——这是一个选择问题

Proceedings of 1997 Wireless Communications Conference Pub Date : 1997-08-11 DOI: 10.1109/WCC.1997.622241

Z. Bardai, A. Kurdoghlian, C. Chang, C. Pao, M. Cole, R. Wang, G. Luong, P. Chu, L. Hou

引用次数: 1

Integrated passive components for RF applications 用于射频应用的集成无源元件

Proceedings of 1997 Wireless Communications Conference Pub Date : 1997-08-11 DOI: 10.1109/WCC.1997.622273

D. Benson, Y. Xuan, J. He, Chang-Ming Lin, C.R. Hodges, E. A. Logan, T. Schaefer, B. Gilbert

引用次数: 6

Measurement and analysis of man-made noise in VHF and UHF bands VHF和UHF频段人为噪声的测量与分析

Proceedings of 1997 Wireless Communications Conference Pub Date : 1997-08-11 DOI: 10.1109/WCC.1997.622284

R. Dalke, R. Achatz, Y. Lo, P. Papazian, G. Hufford

{"title":"Measurement and analysis of man-made noise in VHF and UHF bands","authors":"R. Dalke, R. Achatz, Y. Lo, P. Papazian, G. Hufford","doi":"10.1109/WCC.1997.622284","DOIUrl":"https://doi.org/10.1109/WCC.1997.622284","url":null,"abstract":"The Institute for Telecommunication Sciences measured man-made noise in portions of the VHF and UHF bands. This paper provides an overview of the measurement and analysis methods used and examples of the results. The VHF measurements were made as part of a link analysis for the broadcast of digital satellite weather images at 137 MHz. The motivation for these measurements was that published man-made noise statistics are probably outdated because they are based on noise measurements made over two decades ago. Since that time, technological advances have changed man-made noise emissions. For example, automotive emissions have been reduced, while emissions from other sources such as unregulated electronic devices (e.g., computers and microwave ovens) and other electrical equipment such as electric motors have probably increased significantly. In addition to the VHF measurement results, we present an example of measured noise statistics at 2460 MHz. At this frequency, the dominant noise sources are thought to be microwave ovens. The data we obtained show that there are significant changes in the character of man-made noise which should be considered in the design and implementation of radio systems. Also, additional measurements are necessary to characterize adequately VHF and UHF man-made noise in high technology environments such as modern urban and suburban areas.","PeriodicalId":439434,"journal":{"name":"Proceedings of 1997 Wireless Communications Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126998105","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: 27

Modeling and simulation of a OFDM radio link OFDM无线电链路的建模与仿真

Proceedings of 1997 Wireless Communications Conference Pub Date : 1997-08-11 DOI: 10.1109/WCC.1997.622285

R. Achatz

引用次数: 6

The performance of the united demodulator of MLSE and Viterbi decoder with interleaving (UDMVI) 带交错的MLSE与Viterbi解码器(UDMVI)联合解调器的性能

Proceedings of 1997 Wireless Communications Conference Pub Date : 1997-08-11 DOI: 10.1109/WCC.1997.622248

M. Uesugi, Osamu Kato, K. Homma

{"title":"The performance of the united demodulator of MLSE and Viterbi decoder with interleaving (UDMVI)","authors":"M. Uesugi, Osamu Kato, K. Homma","doi":"10.1109/WCC.1997.622248","DOIUrl":"https://doi.org/10.1109/WCC.1997.622248","url":null,"abstract":"Many techniques are introduced for mobile communication. In order to compensate the effect of multipath fading and improve the BER performance, equalization and forward error correction (FEC) are used. MLSE is a kind of equalizer and it shows good performance. The combination of a convolutional coder and a Viterbi decoder with soft decision is a kind of FEC and it also shows good performance. However, they conventionally work separately. We proposed UDMV (united demodulator of MLSE and Viterbi decoder). The states of the Viterbi algorithm for UDMV is given as a sequence of information bits, while that for MLSE is given as a sequence of coded data. We also applied interleaving to UDMV. It is called UDMVI (UDMV with interleaving). UDMVI can improve 1.0 dB of Eb/No at a BER of 0.1% compared with CMSDI (MLSE and soft decision Viterbi decoder with interleaving). Furthermore, we improved the performance of UDMVI under the condition that no delay paths exist using a transmission technique. We called the technique ADPG (adaptive delay path generation). When ADPG is introduced, UDMVI can show its ability exhaustively in all conditions. ADPG with 2 branches improves 2.5 dB and ADPG with 3 branches improves 3.0 dB of Eb/No at a BER of 0.1% on I path static channel respectively.","PeriodicalId":439434,"journal":{"name":"Proceedings of 1997 Wireless Communications Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125446568","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

Effective evaluation of link quality using error vector magnitude techniques 利用误差矢量大小技术对链路质量进行有效评估

Proceedings of 1997 Wireless Communications Conference Pub Date : 1997-08-11 DOI: 10.1109/WCC.1997.622254

R. Hassun, M. Flaherty, R. Matreci, M. Taylor

引用次数: 103