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Radio and Wireless Conference, 2003. RAWCON '03. Proceedings最新文献

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A software radio OFDM bandpass sampling receiver and the effects of aperture jitter on performance 一种软件无线电OFDM带通采样接收机及其孔径抖动对性能的影响
Radio and Wireless Conference, 2003. RAWCON '03. Proceedings Pub Date : 2003-09-08 DOI: 10.1109/RAWCON.2003.1227936
M. Patel, I. Darwazeh
{"title":"A software radio OFDM bandpass sampling receiver and the effects of aperture jitter on performance","authors":"M. Patel, I. Darwazeh","doi":"10.1109/RAWCON.2003.1227936","DOIUrl":"https://doi.org/10.1109/RAWCON.2003.1227936","url":null,"abstract":"Software radio is a technology that aims to enable the realisation of multi-mode, multi-band digital wireless communications transceivers in order to provide interoperability between heterogeneous networks. Bandpass sampling is considered as a potential solution for the efficient implementation of sampling at IF or RF. This paper describes the performance of a bandpass sampling OFDM receiver and the effect of aperture jitter on system performance.","PeriodicalId":177645,"journal":{"name":"Radio and Wireless Conference, 2003. RAWCON '03. Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115759013","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
Non-reciprocal transceivers in OFDM/SDMA systems: impact and mitigation OFDM/SDMA系统中的非互易收发器:影响和缓解
Radio and Wireless Conference, 2003. RAWCON '03. Proceedings Pub Date : 2003-09-08 DOI: 10.1109/RAWCON.2003.1227923
A. Bourdoux, B. Come, N. Khaled
{"title":"Non-reciprocal transceivers in OFDM/SDMA systems: impact and mitigation","authors":"A. Bourdoux, B. Come, N. Khaled","doi":"10.1109/RAWCON.2003.1227923","DOIUrl":"https://doi.org/10.1109/RAWCON.2003.1227923","url":null,"abstract":"Channel reciprocity is needed in SDMA or MIMO downlink pre-filtering when the channel knowledge is acquired in the uplink. We first show analytically that the non-reciprocity of the base station analog hardware, which is part of the channel, introduces a very high level of multi-user interference and quantify the effect of the non-reciprocity by means of simulations. We then propose a novel calibration technique at the base station that enables to compensate for the non-reciprocity and reduce the MUI to a negligible value while having a low implementation cost.","PeriodicalId":177645,"journal":{"name":"Radio and Wireless Conference, 2003. RAWCON '03. Proceedings","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126809595","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: 126
A planar duplexer consisting of mixed BPFs using different tapped resonators 一种由使用不同抽头谐振器的混合bpf组成的平面双工器
Radio and Wireless Conference, 2003. RAWCON '03. Proceedings Pub Date : 2003-09-08 DOI: 10.1109/RAWCON.2003.1227971
T. Ohno, K. Wada, O. Hashimoto
{"title":"A planar duplexer consisting of mixed BPFs using different tapped resonators","authors":"T. Ohno, K. Wada, O. Hashimoto","doi":"10.1109/RAWCON.2003.1227971","DOIUrl":"https://doi.org/10.1109/RAWCON.2003.1227971","url":null,"abstract":"This paper presents a planar duplexer consisting of mixed bandpass filters (BPFs) using different tapped resonators. The duplexer is designed based on the general filter design and tap-coupling technique. The actual duplexer is fabricated by coplanar waveguide (CPW) structure. The results of this study lead us to the conclusion that the proposal is useful for realizing the high performance planar duplexer fabricated without increasing the number of elements.","PeriodicalId":177645,"journal":{"name":"Radio and Wireless Conference, 2003. RAWCON '03. Proceedings","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128389411","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
30 watt surface-mount power amplifiers for PCS and UMTS applications 用于pc和UMTS应用的30瓦表面贴装功率放大器
Radio and Wireless Conference, 2003. RAWCON '03. Proceedings Pub Date : 2003-09-08 DOI: 10.1109/RAWCON.2003.1227975
E. Crescenzi, B. Griswold, A. Mohammed, R. Buss, R. Pengelly
{"title":"30 watt surface-mount power amplifiers for PCS and UMTS applications","authors":"E. Crescenzi, B. Griswold, A. Mohammed, R. Buss, R. Pengelly","doi":"10.1109/RAWCON.2003.1227975","DOIUrl":"https://doi.org/10.1109/RAWCON.2003.1227975","url":null,"abstract":"Small surface-mount power amplifiers have been developed that produce 30 watts of peak power in the PCS and UMTS frequency bands. These two-stage amplifiers exhibit typical gain of 28 dB with good linearity and efficiency under CDMA signal protocols. The designs involve a combination of chip-and-wire plus SMT lumped and distributed matching elements on a thick-film substrate. The thermal design includes two levels of heat spreading through metal base elements before the PCB attachment interface. FET maximum channel temperatures for PCB mounted devices are typically 121 /spl deg/C for 5 W average CDMA output with a +85 /spl deg/C base temperature. The 30 W peak power is believed to be the highest reported for a commercial surface-mount amplifier operating in a microwave band.","PeriodicalId":177645,"journal":{"name":"Radio and Wireless Conference, 2003. RAWCON '03. Proceedings","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130582808","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 40 GHz LTCC receiver module using a novel submerged balancing filter structure 采用新型淹没平衡滤波器结构的40ghz LTCC接收模块
Radio and Wireless Conference, 2003. RAWCON '03. Proceedings Pub Date : 2003-09-08 DOI: 10.1109/RAWCON.2003.1227915
A. Ziroff, M. Nalezinski, W. Menzel
{"title":"A 40 GHz LTCC receiver module using a novel submerged balancing filter structure","authors":"A. Ziroff, M. Nalezinski, W. Menzel","doi":"10.1109/RAWCON.2003.1227915","DOIUrl":"https://doi.org/10.1109/RAWCON.2003.1227915","url":null,"abstract":"A SMT compatible 40 GHz discrete mixer in LTCC is proposed. A novel filter structure was implemented in a buried layer, which serves as a balun for a discrete balanced mixer at the same time. The design approach scales very well with frequency and stopband specification and allow the design of compact low cost modules.","PeriodicalId":177645,"journal":{"name":"Radio and Wireless Conference, 2003. RAWCON '03. Proceedings","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134462654","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: 19
Analysis of optimized input and output harmonic termination on the linearity of 5 GHz CMOS radio frequency amplifiers 优化输入输出谐波终止对5ghz CMOS射频放大器线性度的影响分析
Radio and Wireless Conference, 2003. RAWCON '03. Proceedings Pub Date : 2003-09-08 DOI: 10.1109/RAWCON.2003.1227950
J. Fairbanks, L. Larson
{"title":"Analysis of optimized input and output harmonic termination on the linearity of 5 GHz CMOS radio frequency amplifiers","authors":"J. Fairbanks, L. Larson","doi":"10.1109/RAWCON.2003.1227950","DOIUrl":"https://doi.org/10.1109/RAWCON.2003.1227950","url":null,"abstract":"The high-frequency nonlinear distortion of a small-signal CMOS common-source amplifier stage is analyzed as a function of bias, source and load termination impedance, and harmonics at 5 GHz using a Volterra analysis. The predictions closely match measurements over bias, and source and load impedances. The results can be applied to low-power wireless RF circuit design applications.","PeriodicalId":177645,"journal":{"name":"Radio and Wireless Conference, 2003. RAWCON '03. Proceedings","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132259901","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
Adaptive duplexer for multiband transreceiver 用于多波段收发的自适应双工器
Radio and Wireless Conference, 2003. RAWCON '03. Proceedings Pub Date : 2003-09-08 DOI: 10.1109/RAWCON.2003.1227972
Shyama Kannangara, M. Faulkner
{"title":"Adaptive duplexer for multiband transreceiver","authors":"Shyama Kannangara, M. Faulkner","doi":"10.1109/RAWCON.2003.1227972","DOIUrl":"https://doi.org/10.1109/RAWCON.2003.1227972","url":null,"abstract":"This paper proposes new adaptive duplexer architecture for multiband systems. It reduces the need for multiple switched duplexers. The propose new technique is based on two step isolation processes: (1) a wide-band circulator (20 dB isolation); and (2) an active double loop canvelling technique that leads to two nulls at the desired frequency and the transmitted frequency. This solution is based on multiband direct conversion receiver. In a direct conversion receiver a simple synchronous detector at the duplex offset frequency provides a convenient feedback signal. Using this approach it was possible to achieve 66 dB total isolation between the transmit signal and the receive signal and 37 dB total transmitter noise cancellation at the receiver band. Adaptive duplexing eliminates many external components in multiband transceiver front end. The described scheme is simple, uses a relatively low frequency error signals and has low computational complexity.","PeriodicalId":177645,"journal":{"name":"Radio and Wireless Conference, 2003. RAWCON '03. Proceedings","volume":"803 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133138303","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: 48
A single-chip 2.4GHz low-power CMOS receiver and transmitter for WPAN applications 单片2.4GHz低功耗CMOS接收机和发射机的WPAN应用
Radio and Wireless Conference, 2003. RAWCON '03. Proceedings Pub Date : 2003-09-08 DOI: 10.1109/RAWCON.2003.1227918
Sohyeong Kim, I. Nam, Taewook Kim, Kyucheol Kang, Kwyro Lee
{"title":"A single-chip 2.4GHz low-power CMOS receiver and transmitter for WPAN applications","authors":"Sohyeong Kim, I. Nam, Taewook Kim, Kyucheol Kang, Kwyro Lee","doi":"10.1109/RAWCON.2003.1227918","DOIUrl":"https://doi.org/10.1109/RAWCON.2003.1227918","url":null,"abstract":"A single ship 2.4 GHz low power CMOS receiver and transmitter for WPAN applications are implemented and measured. The receiver uses a low-IF architecture with a poly-phase filter and transistor linearization technique to improve linearity per power, and the transmitter adopts a ROM based direct-conversion architecture for low power consumption and high integrated density. Experimental results show -79 dBm of sensitivity, 13 dB of receiver NF, -4.5dBm of receiver IIP3, and -4dBm of transmitter output power. The power consumption is 9 mW in receiver and 17 mW in transmitter at 1.8 V, respectively.","PeriodicalId":177645,"journal":{"name":"Radio and Wireless Conference, 2003. RAWCON '03. Proceedings","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129376765","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: 8
A 0.08-cc fully integrated LTCC transceiver front-end module for 5-GHz wireless LAN systems 一个0.08 cc完全集成的LTCC收发器前端模块，用于5 ghz无线局域网系统
Radio and Wireless Conference, 2003. RAWCON '03. Proceedings Pub Date : 2003-09-08 DOI: 10.1109/RAWCON.2003.1227966
K. Kunihiro, S. Yamanouchi, H. Dodo, T. Miyazaki, N. Hayama, M. Fujii, Y. Aoki, Y. Takahashi, K. Numata, K. Haraguchi, T. Ohtsuka, K. Ikuina, H. Hida
{"title":"A 0.08-cc fully integrated LTCC transceiver front-end module for 5-GHz wireless LAN systems","authors":"K. Kunihiro, S. Yamanouchi, H. Dodo, T. Miyazaki, N. Hayama, M. Fujii, Y. Aoki, Y. Takahashi, K. Numata, K. Haraguchi, T. Ohtsuka, K. Ikuina, H. Hida","doi":"10.1109/RAWCON.2003.1227966","DOIUrl":"https://doi.org/10.1109/RAWCON.2003.1227966","url":null,"abstract":"An extremely compact transceiver (TRx) front-end module (FEM) has been developed for 5-GHz wireless LAN systems. A highly-integrated flip-chip TRx IC and the embedding of passive devices in a low-temperature co-fired ceramic (LTCC) with high /spl epsi//sub r/(=17) are the keys to reducing the module size to 8 /spl times/ 10 /spl times/ 1 mm (0.08 cc). To the best of our knowledge, this is the most compact existing FEM that demonstrates full transceiver operation and complies with the IEEE 802.11a standard.","PeriodicalId":177645,"journal":{"name":"Radio and Wireless Conference, 2003. RAWCON '03. Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129540699","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
Simulation of CDMA systems using dynamic system simulator 利用动态系统模拟器对CDMA系统进行仿真
Radio and Wireless Conference, 2003. RAWCON '03. Proceedings Pub Date : 2003-09-08 DOI: 10.1109/RAWCON.2003.1227885
J. Khoja, M. Al-Shalash, J. Bredow
{"title":"Simulation of CDMA systems using dynamic system simulator","authors":"J. Khoja, M. Al-Shalash, J. Bredow","doi":"10.1109/RAWCON.2003.1227885","DOIUrl":"https://doi.org/10.1109/RAWCON.2003.1227885","url":null,"abstract":"Wireless system simulation tools have progressively become more sophisticated along with the progression in the technical sophistication of wireless systems over the years. Because wireless systems are dynamic in nature, they are best evaluated by dynamic system simulators. Dynamic system simulators can capture the details of 3G wireless systems, and are necessary to study the performance of their complex algorithms. This article demonstrates the ability of a dynamic system simulator in studying performance metrics related to a CDMA system, and simultaneously assessing the interactions and correlations of these metrics.","PeriodicalId":177645,"journal":{"name":"Radio and Wireless Conference, 2003. RAWCON '03. Proceedings","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133867738","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
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