发布求助
文献互助 智能选刊 最新文献

Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573)最新文献

筛选
英文 中文
Throughput performance analysis for automatic-repeat-request techniques as combined with adaptive rate transmission 结合自适应速率传输的自动重复请求技术的吞吐量性能分析
Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573) Pub Date : 2002-11-07 DOI: 10.1109/RAWCON.2002.1030110
Jungnam Yun, W. Jeong, M. Kavehrad
{"title":"Throughput performance analysis for automatic-repeat-request techniques as combined with adaptive rate transmission","authors":"Jungnam Yun, W. Jeong, M. Kavehrad","doi":"10.1109/RAWCON.2002.1030110","DOIUrl":"https://doi.org/10.1109/RAWCON.2002.1030110","url":null,"abstract":"We mainly focus our investigation on the throughput performance of automatic-repeat-request (ARQ) techniques in conjunction with adaptive rate schemes. First, it is explained how three types of ARQ techniques are combined with adaptive rate transmission. Then, we present analytical expressions for throughput performance of these three ARQ techniques as combined with adaptive rate schemes. We also consider the channel estimation error for throughput analysis and compare the performance to throughput performance when perfect channel estimation is assumed.","PeriodicalId":132092,"journal":{"name":"Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133609733","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
An analysis of direction-of-arrival estimation for closely spaced wideband sources in direction finding smart antennas 测向智能天线中近间隔宽带源的到达方向估计分析
Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573) Pub Date : 2002-11-07 DOI: 10.1109/RAWCON.2002.1030114
T. Do-Hong, P. Russer
{"title":"An analysis of direction-of-arrival estimation for closely spaced wideband sources in direction finding smart antennas","authors":"T. Do-Hong, P. Russer","doi":"10.1109/RAWCON.2002.1030114","DOIUrl":"https://doi.org/10.1109/RAWCON.2002.1030114","url":null,"abstract":"This paper presents an analysis of direction-of-arrival estimation for closely spaced wideband sources in direction finding smart antennas. The relation between array manifold and source separation is derived. The analysis is applied for wideband farfield sources received by an arbitrary array of omnidirectional antenna elements. This analysis can also be applied for both one-dimensional (1D) estimation and two-dimensional (2D) estimation. Simulation is performed for comparison to analysis results, and it is shown that the analysis and simulation results are similar for the spectra of signals, the resolution threshold and minimum separation of sources.","PeriodicalId":132092,"journal":{"name":"Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128950476","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
A DSP-based implementation of adaptive algorithms for a W-CDMA reverse link beamformer 基于dsp的W-CDMA反向链路波束形成器自适应算法实现
Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573) Pub Date : 2002-11-07 DOI: 10.1109/RAWCON.2002.1030137
R. Martínez, L. García, L. de Haro, M. Calvo
{"title":"A DSP-based implementation of adaptive algorithms for a W-CDMA reverse link beamformer","authors":"R. Martínez, L. García, L. de Haro, M. Calvo","doi":"10.1109/RAWCON.2002.1030137","DOIUrl":"https://doi.org/10.1109/RAWCON.2002.1030137","url":null,"abstract":"This paper presents a DSP-based implementation of an adaptive beamformer for the W-CDMA reverse link. A comparative study of LMS and RLS adaptive algorithms is shown, which leads to the implementation taking into account both performance results and computational load. Results for fixed-point DSP implementation and floating point simulations are presented.","PeriodicalId":132092,"journal":{"name":"Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121855930","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: 4
A 2.7-V monolithic SiGe HBT variable gain amplifier for CDMA applications 用于CDMA应用的2.7 v单片sighbt可变增益放大器
Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573) Pub Date : 2002-11-07 DOI: 10.1109/RAWCON.2002.1030148
Chang-Woo Kim, Sung-ryong Park, Young-Gi Kim
{"title":"A 2.7-V monolithic SiGe HBT variable gain amplifier for CDMA applications","authors":"Chang-Woo Kim, Sung-ryong Park, Young-Gi Kim","doi":"10.1109/RAWCON.2002.1030148","DOIUrl":"https://doi.org/10.1109/RAWCON.2002.1030148","url":null,"abstract":"A monolithic SiGe HBT variable gain amplifier with high dB-linear gain control and high linearity has been developed for CDMA applications. The VGA achieves a dynamic gain control range of 30 dB with 2.7-Vdc control-voltage range in 824-849 MHz. The maximum gain and attenuation at a center frequency of 835 MHz are 23 dB and 7 dB, respectively. Input/output VSWR keep low and constant despite change in the gain-control voltage. At a low operation voltage of 2.7 V the VGA produces a output power of 5 dBm with 20 dB power gain and -57 dBc ACPR at /spl plusmn/885 KHz offset bands.","PeriodicalId":132092,"journal":{"name":"Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573)","volume":"197 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133782368","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 importance of nonlinear order in modeling intermodulation distortion and spectral regrowth 非线性阶数在模拟互调失真和频谱再生中的重要性
Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573) Pub Date : 2002-11-07 DOI: 10.1109/RAWCON.2002.1030142
K. Gharaibeh, K. Gard, H. Gutierrez, M. Steer
{"title":"The importance of nonlinear order in modeling intermodulation distortion and spectral regrowth","authors":"K. Gharaibeh, K. Gard, H. Gutierrez, M. Steer","doi":"10.1109/RAWCON.2002.1030142","DOIUrl":"https://doi.org/10.1109/RAWCON.2002.1030142","url":null,"abstract":"Modeling of distortion in nonlinear RF and microwave amplifiers requires high order nonlinear modeling to capture behavior with digitally modulated signals but only low order modeling to capture the response with discrete spectra as in two-tone testing. This paper establishes model order requirements for successful behavioral modeling for system explorations.","PeriodicalId":132092,"journal":{"name":"Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116715160","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: 4
An omnidirectional and low-VSWR antenna for ultra-wideband wireless systems 一种用于超宽带无线系统的全向低驻波比天线
Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573) Pub Date : 2002-11-07 DOI: 10.1109/RAWCON.2002.1030138
T. Taniguchi, T. Kobayashi
{"title":"An omnidirectional and low-VSWR antenna for ultra-wideband wireless systems","authors":"T. Taniguchi, T. Kobayashi","doi":"10.1109/RAWCON.2002.1030138","DOIUrl":"https://doi.org/10.1109/RAWCON.2002.1030138","url":null,"abstract":"This paper proposes an omnidirectional-in-azimuth, low voltage-standing-wave-ratio (VSWR), and easy-to-construct antenna for ultra-wideband (UWB) systems. Most wideband antennas do not simultaneously meet omnidirectional and low-VSWR requirements, essential for applications such as UWB channel sounding. The proposed antenna consists of a circular ground plane and a teardrop that is defined as a combination of a finite cone and a sphere to be inscribed inside the cone at lite cone base. This antenna can be considered either as a rounded finite monocone antenna or as a simplified volcano smoke antenna. Assuming 50-/spl Omega/ excitation, the optimum half-cone angle is 48/spl deg/ which gives the lowest maximum VSWR between 2 and 10 GHz. A prototype antenna was constructed and its VSWR and radiation characteristics were measured. The proposed antenna shows lower VSWR than a finite monocone of the equivalent size across most of the bandwidth. There was a good correlation between the measured and the calculated radiation patterns observed.","PeriodicalId":132092,"journal":{"name":"Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124806201","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: 42
A tuning method using a dummy cavity for dual-mode cavity filters 一种使用假腔用于双模腔滤波器的调谐方法
Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573) Pub Date : 2002-11-07 DOI: 10.1109/RAWCON.2002.1030119
Juseop Lee, M. Uhm, S. Kahng, Pil-yong Lee, I. Yom, S. Lee
{"title":"A tuning method using a dummy cavity for dual-mode cavity filters","authors":"Juseop Lee, M. Uhm, S. Kahng, Pil-yong Lee, I. Yom, S. Lee","doi":"10.1109/RAWCON.2002.1030119","DOIUrl":"https://doi.org/10.1109/RAWCON.2002.1030119","url":null,"abstract":"A tuning method using short-ended dummy cavity is presented for dual-mode cavity filters. Tuning is based on the match of the computed and measured phase response of reflection coefficient. Equivalent circuit model is adopted for computing required phase response of reflection coefficient. This proposed method is applied to 4-pole in-line type dual-mode elliptic response filter for demonstration of this new method. It is shown that this method shows good agreement between the experimental and computed result, and no additional tuning procedure is required.","PeriodicalId":132092,"journal":{"name":"Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128232853","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
BER for multi-access UWB radio using pseudo-chaotic time hopping 伪混沌跳时多址UWB无线电的误码率
Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573) Pub Date : 2002-11-07 DOI: 10.1109/RAWCON.2002.1030125
D. Laney, G. M. Maggio, F. Lehmann, L. Larson
{"title":"BER for multi-access UWB radio using pseudo-chaotic time hopping","authors":"D. Laney, G. M. Maggio, F. Lehmann, L. Larson","doi":"10.1109/RAWCON.2002.1030125","DOIUrl":"https://doi.org/10.1109/RAWCON.2002.1030125","url":null,"abstract":"Pseudo-chaotic time hopping (PCTH) is a recently proposed modulation scheme for UWB impulse radio. PCTH exploits concepts from symbolic dynamics to generate aperiodic spreading sequences. In this paper, we present a general analytical expression for the average bit error rate (BER) performance of a synchronous multi-access PCTH system as a function of the cross-correlation between the users' signatures in an additive white Gaussian noise (AWGN) channel. Also, it is shown that with enough users an error floor in the BER can develop.","PeriodicalId":132092,"journal":{"name":"Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126646636","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
Two dimensional dynamic channel assignment for wireless mobile high speed data network 无线移动高速数据网络的二维动态信道分配
Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573) Pub Date : 2002-11-07 DOI: 10.1109/RAWCON.2002.1030108
F. Alizadeh-Shabdiz
{"title":"Two dimensional dynamic channel assignment for wireless mobile high speed data network","authors":"F. Alizadeh-Shabdiz","doi":"10.1109/RAWCON.2002.1030108","DOIUrl":"https://doi.org/10.1109/RAWCON.2002.1030108","url":null,"abstract":"In order to increase resource utilization in wireless mobile high speed data networks, two dimensional dynamic channel assignment is proposed The quality of the wireless channel inherently varies with time and, in order to get the best use of the available spectrum, the proposed new assignment method changes the bandwidth and the period of assignment dynamically. It is based on the channel condition, type of traffic, and signaling overhead. The new scheme not only reduces waste of radio resources when the channel condition is poor, but also gives the capability to maintain the QoS of users in an optimum fashion.","PeriodicalId":132092,"journal":{"name":"Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127709796","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
Polymer-membrane-supported fin-line frequency multipliers 聚合物膜支持的鳍线倍频器
Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573) Pub Date : 2002-11-07 DOI: 10.1109/RAWCON.2002.1030172
W.Y. Liu, S. Mohammadi, L. Katehi, M. Steer
{"title":"Polymer-membrane-supported fin-line frequency multipliers","authors":"W.Y. Liu, S. Mohammadi, L. Katehi, M. Steer","doi":"10.1109/RAWCON.2002.1030172","DOIUrl":"https://doi.org/10.1109/RAWCON.2002.1030172","url":null,"abstract":"This paper reports with experimental proof two polymer-membrane-supported fin-line frequency multipliers that generate from a microwave source a signal well beyond 100 GHz. The frequency multipliers were realized on a 7-micron thick polymer membrane in the absence of any steps involving thermal oxidation and low-pressure-chemical-vapor-deposition (LPCVD).","PeriodicalId":132092,"journal":{"name":"Proceedings RAWCON 2002. 2002 IEEE Radio and Wireless Conference (Cat. No.02EX573)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122924853","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
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