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Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)最新文献

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Noise in self-timed and synchronous implementations of a DSP DSP自定时和同步实现中的噪声
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709140
W. A. Lien, P. Day, C. Farnsworth, R. Glibbery, D. L. Jackson, J. Liu, N. Paver, J. Chappel, L. Kozma
{"title":"Noise in self-timed and synchronous implementations of a DSP","authors":"W. A. Lien, P. Day, C. Farnsworth, R. Glibbery, D. L. Jackson, J. Liu, N. Paver, J. Chappel, L. Kozma","doi":"10.1109/RAWCON.1998.709140","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709140","url":null,"abstract":"This paper proposes the use of self-timed design as an elegant and cost effective solution to control noise. The importance of reducing the high frequency components of the switched current is demonstrated from a review of noise sources in electronic systems. The paper includes a comparison between synchronous and self-timed systems based on the implementation of a DSP and clearly demonstrates the benefits of self-timed design.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121065725","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: 6
Table-based FET model assembled from small-signal models 基于表格的FET模型由小信号模型组装而成
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709210
C. Wei, Y. Tkachenko, D. Bartle
{"title":"Table-based FET model assembled from small-signal models","authors":"C. Wei, Y. Tkachenko, D. Bartle","doi":"10.1109/RAWCON.1998.709210","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709210","url":null,"abstract":"A data-table based large-signal MESFET model is presented based on an ensemble of bias-dependent small-signal equivalent circuits. The model is capable of accurate simulation of small-signal S-parameters over the data-acquisition bias range. In addition to the dc current sources, the model contains two quasi-static charge sources and RF current sources, which are generated by integration of respective intrinsic small-signal element values with respect to the port voltages. All equivalent elements are obtained by cubic spline interpolation. Extrapolation of the model beyond the measurement range is taken into account. The model is extracted by an in-house software without involving optimization. The validity of the model is demonstrated by comparing the simulation of small-signal S-parameters over a wide bias range and power performance to the measured data.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121239651","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
System performance analysis of impulse radio modulation 脉冲无线电调制系统性能分析
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709138
F. Ramírez-Mireles, R. Scholtz
{"title":"System performance analysis of impulse radio modulation","authors":"F. Ramírez-Mireles, R. Scholtz","doi":"10.1109/RAWCON.1998.709138","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709138","url":null,"abstract":"We present a system performance analysis of impulse radio modulation using block waveform encoding signal sets. We analyze both the multiple-access performance in a channel with additive white Gaussian noise, and the single-link performance in a channel with dense multipath.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122191855","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: 70
Effect of tilted base-station antennas on cochannel interference reduction in cellular communications 倾斜基站天线对减少蜂窝通信中共信道干扰的影响
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709144
Tingkai Qin, Xing Zhang, Yong Cheng
{"title":"Effect of tilted base-station antennas on cochannel interference reduction in cellular communications","authors":"Tingkai Qin, Xing Zhang, Yong Cheng","doi":"10.1109/RAWCON.1998.709144","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709144","url":null,"abstract":"The effect of tilted base-station antennas on cochannel interference reduction is studied analytically. A work-site testing approach of antenna installation is proposed and better cochannel interference reduction can be expected by applying the new approach.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116613113","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
Microfabricated single crystal silicon transmission lines 微加工单晶硅传输线
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709188
T.D. Kudrle, H. Neves, N. MacDonald
{"title":"Microfabricated single crystal silicon transmission lines","authors":"T.D. Kudrle, H. Neves, N. MacDonald","doi":"10.1109/RAWCON.1998.709188","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709188","url":null,"abstract":"A novel approach to the transmission of microwave energy is demonstrated on standard (resistivity=1-20 ohm-cm) silicon. The transmission lines consist of pairs of parallel-plate waveguides, each waveguide formed from two deep (150 /spl mu/m) suspended single crystal silicon (SCS) beams. This transmission is achieved through the integration of SCREAM (single crystal reactive etching and metallization) technology adapted for very high aspect ratio structures with thick copper sputter deposition. The integration of these processes allows for the deposition of thick (>.5 /spl mu/m) metal on the sidewalls and attenuation characteristics better than 0.17 dB/mm over the 10-48 GHz frequency range.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130328008","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: 3
Wideband radio prototyping environment 宽带无线电原型环境
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709141
T. Makelainen, T. Eriksson, J. Posti, R. Suoranta
{"title":"Wideband radio prototyping environment","authors":"T. Makelainen, T. Eriksson, J. Posti, R. Suoranta","doi":"10.1109/RAWCON.1998.709141","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709141","url":null,"abstract":"Evaluation of the candidates for the next generation cellular wireless standards is currently going on widely. One critical aspect in the standardisation process is the definition of terrestrial physical layer interface. The physical layer principles along with resource allocation mechanism on medium access control (MAC) together define how well the physical layer resources can be utilised. The prototyping environment presented in this paper has been built to analyse and validate effectiveness of the different design choices. As an example, the case considered is wideband time division multiple access (W-TDMA) based air interface developed in the EU ACTS AC090 FRAMES project.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121289200","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
An IF digitizing receiver for a combined GPS/GSM terminal 一种用于GPS/GSM组合终端的中频数字化接收机
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709131
K. Boehm, T. Hentschel, T. Mueller, F. Oehler, G. Rohmer
{"title":"An IF digitizing receiver for a combined GPS/GSM terminal","authors":"K. Boehm, T. Hentschel, T. Mueller, F. Oehler, G. Rohmer","doi":"10.1109/RAWCON.1998.709131","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709131","url":null,"abstract":"For the purpose of traffic telematics (route guidance, fleet management etc.) one needs terminals on the vehicle for the quasi-simultaneous reception of cellular phone (GSM) and satellite navigation (GPS). A conventional approach uses two complete receivers for these two tasks. We describe a cost-saving solution for a combined receiver which relies on the TDM structure of the GSM signal. Our solution is based on an bandpass-sigma-delta ADC for IF digitizing.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131810802","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: 11
Linearization performance for a polar work function predistorter 极性功函数预失真器的线性化性能
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709202
C. Rey, E. Clark
{"title":"Linearization performance for a polar work function predistorter","authors":"C. Rey, E. Clark","doi":"10.1109/RAWCON.1998.709202","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709202","url":null,"abstract":"We present a polar work function predistorter (WFP) which shows good RF amplifier linearization performance and wideband capability. We describe a DSP optimization scheme that allows the linearizer to adapt and maintain optimum out-of-band performance. We further describe a simulator that accurately models the performance of the system and predicts dynamic distortion due to the WFP implementation as well as an unexpected nonlinear optimum solution for the am-to-am distortion compensation.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"65 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130756518","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
A new real time radio frequency direction finding algorithm for Gaussian and non-Gaussian noise environments 一种适用于高斯和非高斯噪声环境的实时射频测向算法
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709180
W. Featherstone, H. Strangeways
{"title":"A new real time radio frequency direction finding algorithm for Gaussian and non-Gaussian noise environments","authors":"W. Featherstone, H. Strangeways","doi":"10.1109/RAWCON.1998.709180","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709180","url":null,"abstract":"In this paper, a new superresolution direction finding (SRDF) algorithm for multiple incident radio waves is proposed. Superresolution methods enable resolution of signals separated by less than the natural beamwidth of the array. This ability enables the algorithms to separate the closely spaced signals encountered in a multipath environment. The algorithm is termed loaded capon and is shown to be capable of operating on data sets containing a limited number of data points. The new algorithm is shown to be robust in both Gaussian and non-Gaussian noise environments. Simulated and measured data, recorded on a multi-channel direction finding system, are used to demonstrate the algorithm's superior performance robustness over both the standard MVE and eigen-based techniques such as MUSIC.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133432798","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
Electronic beam tilting of base station antenna: Rotman lens fed 基站天线电子束倾斜:罗特曼透镜馈电
Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194) Pub Date : 1998-08-09 DOI: 10.1109/RAWCON.1998.709145
S.G. Kim, S.M. Park, C. Ro, J. Lee
{"title":"Electronic beam tilting of base station antenna: Rotman lens fed","authors":"S.G. Kim, S.M. Park, C. Ro, J. Lee","doi":"10.1109/RAWCON.1998.709145","DOIUrl":"https://doi.org/10.1109/RAWCON.1998.709145","url":null,"abstract":"A new electronically controlled down-tilt mechanism for wireless communication base station antenna is presented. Its main feature consists of a microwave switch, a symmetrical bootlace lens which is a beam forming device like Rotman (1963) lens, and linearly arrayed antennas. Each beam port of the symmetrical bootlace lens is designed to give a linear phase front across the radiating elements, yielding a radiation spatially summed in a direction normal to the phase front. Furthermore, a few watts small power amplifiers may be inserted between the array ports of the lens and radiating elements to replace the conventional single high power amplifier and heavy cable runs and fixed directive sector antenna with a cost-effective tower-top phased array antenna. These concepts are checked by experimental results.","PeriodicalId":226788,"journal":{"name":"Proceedings RAWCON 98. 1998 IEEE Radio and Wireless Conference (Cat. No.98EX194)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132201639","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: 3
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