发布求助
文献互助 智能选刊 最新文献

CSQRWC 2012最新文献

筛选
英文 中文
Calibration of digital modulation quality parameters of 802.11n WLAN tester 校正802.11n无线局域网测试仪的数字调制质量参数
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294958
Zhang Zhiqiang, Lai Lei
{"title":"Calibration of digital modulation quality parameters of 802.11n WLAN tester","authors":"Zhang Zhiqiang, Lai Lei","doi":"10.1109/CSQRWC.2012.6294958","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294958","url":null,"abstract":"This paper describes the standard instruments and calibration methods for the calibration of digital modulation parameters of 802.11n WLAN tester, and gives the analysis of the digital modulation quality parameters; finally introduces the checking parameters and checking methods for the 802.11n digital modulation output signal.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"18 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126933839","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 early stopping criterion for LDPC decoding based on average weighted reliability measure 基于平均加权可靠性测度的LDPC译码早期停止准则
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294956
Tso-Cho Chen
{"title":"An early stopping criterion for LDPC decoding based on average weighted reliability measure","authors":"Tso-Cho Chen","doi":"10.1109/CSQRWC.2012.6294956","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294956","url":null,"abstract":"An early stopping criterion for low-density parity-check decoding is proposed to reduce the number of decoding iterations. The proposed early stopping criterion is based on the average weighted reliability measure of the hard output of decoder to detect undecodable blocks in an early stage of the decoding process. Simulation results show that the proposed algorithm can achieve about 0.2-0.4 dB coding gain improvement on average while reducing up to about 50%-85% iteration for decoding at low to medium Eb/N0, compared with the existing method.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122315481","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
Implementation of low dropout regulator with low bandgap reference voltage circuit for RFID tag applications 基于低带隙参考电压电路的RFID标签低压差稳压器的实现
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294976
Min-Chin Lee, Chi-Chun Hu, Zong-Wei Lin
{"title":"Implementation of low dropout regulator with low bandgap reference voltage circuit for RFID tag applications","authors":"Min-Chin Lee, Chi-Chun Hu, Zong-Wei Lin","doi":"10.1109/CSQRWC.2012.6294976","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294976","url":null,"abstract":"This paper proposes a high performance LDO with low bandgap reference voltage circuit that have a low temperature coefficient and stable supply voltage for applications to RFID Tag power management module. This proposed circuit is design and implemented using the TSMC 0.35μm CMOS 2P4M process. Based on simulated and measured results, the chip size is 0.686 × 0.805mm2 with power dissipation about 1.32mW, and the operation temperature range form 0°C to 100°C with temperature coefficient about 10.52ppm/°C. The chip supply voltage can from 2.9V to 3.3V, with 4mV /V line regulation and 31uV /mA load regulation (output current from 0 ~ 100mA variation), provides an stable output voltage of 1.61V and its low bandgap reference voltage circuit output reference voltage can stable at 0.65V.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131277056","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: 14
The application of composite grid method to an electromagnetic scattering problem 复合网格法在电磁散射问题中的应用
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294990
Guizhen Lu, Tao Chen, Li Yang
{"title":"The application of composite grid method to an electromagnetic scattering problem","authors":"Guizhen Lu, Tao Chen, Li Yang","doi":"10.1109/CSQRWC.2012.6294990","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294990","url":null,"abstract":"In this paper, we applied a composite grid method (CGM) to solve the electromagnetic scattering problem of thin wire structures, which can greatly reduce the number of unknowns. Composite grid method derived from the domain decomposition method, solves the formulation on two sets of meshes totally different in mesh-size, the coarse mesh and the fine one. In electromagnetic scattering problems, the fine grid region contains the thin wire structures cause the scattering field. Using the interface boundary condition, the coarse mesh region and fine one are calculated separately, and then the scattering field of the thin wire structure was obtained. The CGM based scheme can reduce the computing effort. We compare the result with the traditional finite element method which partitions the whole domain into fine mesh. The two results agree very well, which demonstrates the validity and efficiency of our method.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124373842","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
Design and implementation of a low power VCO for K-Band Application k波段低功耗压控振荡器的设计与实现
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294967
M. Her, Pao-Hsun Wu, C. Huang
{"title":"Design and implementation of a low power VCO for K-Band Application","authors":"M. Her, Pao-Hsun Wu, C. Huang","doi":"10.1109/CSQRWC.2012.6294967","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294967","url":null,"abstract":"A fully integrated low power voltage control oscillator K-Band application is presented in this letter. Using Gm-boosted architecture, the power consumption can be lower. In addition, the capacitive filtering technology can prevent the low frequency tail current noise converted into phase noise, the technology used to enhance the phase noise performance. The VCO design and implement in TSMC 0.18μm COMS technology with 1.5V supply voltage, the simulated power consumption is 15 mV, tuning range is 18.56 GHz ~ 17.51 GHz, phase noise at 1-MHz is -112 dBc/Hz, chip size is 0.496 * 0.678 μm2.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123638302","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
A low computing I/Q-mismatch compensator for 3GPP LTE systems 用于3GPP LTE系统的低计算I/ q不匹配补偿器
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294955
Terng-Yin Hsu, Wei-Chi Lai, Shao-Ying Yeh
{"title":"A low computing I/Q-mismatch compensator for 3GPP LTE systems","authors":"Terng-Yin Hsu, Wei-Chi Lai, Shao-Ying Yeh","doi":"10.1109/CSQRWC.2012.6294955","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294955","url":null,"abstract":"Variations of I/Q gains and phases of RF frontend, namely I/Q mismatch (I/Q-M), are the important impact in OFDM-based wireless accesses. Making a 2×2 MIMO-OFDM modem of 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) work properly, this work investigates a low computing cross-ratio engine to deal with serious I/Q-M by using only synchronization signal (SS). Through performance evaluation, our approach incurs a 0.3-dB SNR loss to maintain BER<;10-5 at 1-dB gain error and 15°-phase error. Hence, this work not only ensures adequate performances, but also makes low computing I/Q-M estimation and compensation.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126426841","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 gilbert mixer with passive balun for 18 GHz Application 一种18ghz应用的带被动平衡的吉尔伯特混频器
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294989
M. Her, Cheng-Kai Hung, C. Huang, M. Hsu, Wen Ko, Yu-Chang Lin
{"title":"A gilbert mixer with passive balun for 18 GHz Application","authors":"M. Her, Cheng-Kai Hung, C. Huang, M. Hsu, Wen Ko, Yu-Chang Lin","doi":"10.1109/CSQRWC.2012.6294989","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294989","url":null,"abstract":"The aim of this paper is presented A Gilbert mixer with passive balun for 18 GHz application. It was used Taiwan Semiconductor provided by TSMC CMOS 0.18 μm process. We proposed mixer consists of Gilbert Cell, balun and the IF buffer amplifier. Finally, at the operation voltage of Vdd = 1.8 V, RF frequency = 18 GHz, LO frequency = 17 GHz, the conversion gain is about 8.6 dB, input P1dB and power consumption are about -9 dBm and 41.4 mW. The chip size including all testing pads is 0.76 × 0.59 mm2.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128649517","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
Aperture-coupled dual-band circularly polarized antenna for RFID reader applications 用于RFID阅读器的孔径耦合双频圆极化天线
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294984
H. Hsu, Ting-Jui Huang
{"title":"Aperture-coupled dual-band circularly polarized antenna for RFID reader applications","authors":"H. Hsu, Ting-Jui Huang","doi":"10.1109/CSQRWC.2012.6294984","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294984","url":null,"abstract":"This paper presents the design and testing of an aperture-coupled dual-band and circularly-polarized antenna for RFID reader applications. The antenna was designed to cover both UHF (902 MHz ~ 928 MHz) and microwave (2.4 GHz ~ 2.5 GHz) bands. The coupling apertures were arranged orthogonally with proper phase offset to achieve circular polarization (CP) at both bands. The fabricated prototype exhibited good impedance bandwidth, an axial ratio of less than 3 dB, and 7dBi peak gain at both bands.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133962297","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: 17
A precoding transceiver design for OFDMA Uplink system over CFO and multipath fading channels 基于CFO和多径衰落信道的OFDMA上行系统的预编码收发器设计
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6294996
Juinn-Horng Deng, Yuh-Cherng Jang
{"title":"A precoding transceiver design for OFDMA Uplink system over CFO and multipath fading channels","authors":"Juinn-Horng Deng, Yuh-Cherng Jang","doi":"10.1109/CSQRWC.2012.6294996","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6294996","url":null,"abstract":"In this paper, a precoding OFDMA uplink technique is proposed for the upcoming 4G cellular system. Such as IEEE 802.16m and 3GPP LTE, both of them are 4G candidates. We especially tackle the common carrier frequency offset (CFO) problem which brings the inter carrier interference (ICI) and multiple access interference (MAI). The main idea of this paper is the proposed QR dirty paper coding (QR-DPC) method, which is based on QR decomposition. Assisted with block diagonalization (BD) algorithm, we successfully utilize the precoding technique to eliminate the annoying MAI in a multiuser uplink system. Thus, the combination of BD and QR-DPC can significantly increase the BER performance as compared to conventional DPC. Moreover, we can further enhance the performance of QR-DPC by using the famous Water Pouring algorithm. Simulation results confirm that the proposed system can provide excellent performance under the ICI, MAI, and multipath interference environment.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128756218","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 automatic window washer 自动擦窗机
CSQRWC 2012 Pub Date : 2012-07-23 DOI: 10.1109/CSQRWC.2012.6295006
Chien-Nan Lee, Li-Lin Chen, Kai‐Teng Jheng, Jheng-Guo Pan, Yi-Syong Su
{"title":"An automatic window washer","authors":"Chien-Nan Lee, Li-Lin Chen, Kai‐Teng Jheng, Jheng-Guo Pan, Yi-Syong Su","doi":"10.1109/CSQRWC.2012.6295006","DOIUrl":"https://doi.org/10.1109/CSQRWC.2012.6295006","url":null,"abstract":"Recently, incidents in which window washers have fallen during jobs have been reported in Taiwan. If a robot could replace manual window washing labor, accidents would be prevented and window washing costs would decrease. After rain, a certain amount of water remains on windows; consequently, if a robot existed that could automatically wash windows directly after rain, window cleanliness would be maintained and unnecessary manual labor costs would be reduced. Our window washing device can detect whether it is raining. When rain starts, the raindrop sensor is triggered, and the system's screen displays that it is raining. When rain stops, the system begins to automatically wash windows, or users can start the window washing function manually. It also automatically washes windows when window glass becomes foggy and records time.","PeriodicalId":250360,"journal":{"name":"CSQRWC 2012","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123440234","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
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：604180095
Book学术官方微信
小红书