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2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals最新文献

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High-speed real-time hand effect tuning algorithm in hand-held terminal 手持终端的高速实时手效调整算法
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027217
Hyeong-seok Jang, W. Son, K. Oh, Sang-Hun Lee, Ja-Hong Ku, Jong-Won Yu
{"title":"High-speed real-time hand effect tuning algorithm in hand-held terminal","authors":"Hyeong-seok Jang, W. Son, K. Oh, Sang-Hun Lee, Ja-Hong Ku, Jong-Won Yu","doi":"10.1109/IMWS2.2011.6027217","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027217","url":null,"abstract":"In this paper, impedance tuning algorithm is proposed. To improve antenna radiation performance, antennas have high radiation efficiency and mismatched efficiency. The mismatched efficiency can be improved by the impedance matching circuit and matching algorithm. The proposed algorithm uses only standing wave ratio (SWR) information. The proposed algorithm is high-speed predicting antenna impedance algorithm. The algorithm running time is less than 25 ms.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132554494","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
Cooperative sensing using probabilistic graphical models in Cognitive Radio networks 认知无线电网络中基于概率图模型的协同感知
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027193
Mochan Yang, Sung-kyun Yoo, Yirang Yim, Y. Shin
{"title":"Cooperative sensing using probabilistic graphical models in Cognitive Radio networks","authors":"Mochan Yang, Sung-kyun Yoo, Yirang Yim, Y. Shin","doi":"10.1109/IMWS2.2011.6027193","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027193","url":null,"abstract":"We propose a new scheme for minimizing the probability of false alarm in cooperative CR (Cognitive Radio) networks by using graphical model theory. In order to improve the performance, we formulate a dynamical assignment for SUs (Secondary Users) to better detect PUs (Primary Users). A restriction in the assignment of SUs is adopted to reduce the complexity of optimal solution, and a sub-optimal message passing algorithm is presented based on the probabilistic graphical model.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131541268","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 low-power wideband transimpedance amplifier in 0.13µm CMOS 一种0.13µm CMOS低功耗宽带跨阻放大器
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027202
Jiyoung Tak, H. Kim, Jihye Shin, Jinju Lee, Jung-Won Han, Sung Min Park
{"title":"A low-power wideband transimpedance amplifier in 0.13µm CMOS","authors":"Jiyoung Tak, H. Kim, Jihye Shin, Jinju Lee, Jung-Won Han, Sung Min Park","doi":"10.1109/IMWS2.2011.6027202","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027202","url":null,"abstract":"This paper presents a low-power wideband transimpedance amplifier (TIA) for the applications of multi-band wireless communication systems. Realized in a standard 0.13µm CMOS technology, the measured results of the TIA demonstrate the maximum gain of 16dB in the frequency range of 800MHz∼4.3GHz, the noise figure of < 5.88dB, the input-referred third order intercept point (IIP3) of −5.4dBm at 2.4GHz, and the power consumption of 12mW from a single 1.2V supply. The chip occupies the total area of 0.7×1.1mm2.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122643830","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
A high speed comparator based active rectifier for wireless power transfer systems 一种基于高速比较器的无线电力传输系统有源整流器
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027216
Yang Sun, Chang-Jin Jeong, Seok-Kyun Han, Sang-Gug Lee
{"title":"A high speed comparator based active rectifier for wireless power transfer systems","authors":"Yang Sun, Chang-Jin Jeong, Seok-Kyun Han, Sang-Gug Lee","doi":"10.1109/IMWS2.2011.6027216","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027216","url":null,"abstract":"Wireless power transfer technique can be used in many applications nowadays. The main limitation of this wireless power transfer system is in their interface circuitry. In this paper, a highly efficient active rectifier is proposed. By adopting the high speed comparator and, proposed rectifier solved the turn on and off delay of power transistor problem of conventional rectifier and shows high power conversion efficiency. Based on 0.35 um CMOS technology, the simulated power efficiency of the proposed rectifier is 92%. The proposed active rectifier improves upon the power conversion efficiency by 1.66 times compared to the conventional one.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115163504","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
A signal detection method for uplink multiuser MIMO systems 一种用于上行多用户MIMO系统的信号检测方法
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027186
Tae-ho Im, Sungwook Yu, Y. Cho
{"title":"A signal detection method for uplink multiuser MIMO systems","authors":"Tae-ho Im, Sungwook Yu, Y. Cho","doi":"10.1109/IMWS2.2011.6027186","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027186","url":null,"abstract":"In this paper, we propose an efficient signal detection method for uplink multiuser systems based on collaborative spatial multiplexing (CSM). The proposed method achieves near-optimal performance and shows only 0.8dB loss at the target frame error rate (FER) of 10−2. It also requires substantially lower computational complexity than the QRD-M method especially when the modulation order is high (e.g., 16-QAM and 64-QAM). Moreover, the error performance of each user is almost the same in the proposed method, which is an important property in a multiuser multiple-input multiple-output (MIMO) system where each user's error performance must satisfy some fixed error rate criteria. This is a big advantage over other detection methods such as the ordered successive interference cancellation (OSIC) and the QRD-M methods, where the error performance varies greatly among users.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131265443","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
Nerimi: WiFi-based subway navigation system
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027187
Inje Lee, Gi-Wan Yoon, Dongsoo Han
{"title":"Nerimi: WiFi-based subway navigation system","authors":"Inje Lee, Gi-Wan Yoon, Dongsoo Han","doi":"10.1109/IMWS2.2011.6027187","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027187","url":null,"abstract":"In this paper, we propose a WiFi-based stop notification system. The users of the system inform their destination stops to the system, then the system provides subway navigation services to the users in real-time. To construct the system, we have collected WiFi fingerprints at 15 lines for 536 Seoul subway stops. Also, we have implemented a WiFi-based subway stop notification system for Seoul subways in Korea. We have tested the accuracy of our system, Nerimi, at Seoul subways. Among the 536 stops, the system could detect the subway stops with over 90% accuracy. Thus, if we can capture the WiFi signals at every stop of the subways, using the WiFi signals will be highly eligible for building a subway navigation system.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124244142","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
Multiband MIMO antenna using a symmetric slotted structure for next generation USB dongle application 多频段MIMO天线采用对称开槽结构，适用于下一代USB加密狗应用
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027175
Jaehoon Choi, Minseok Han
{"title":"Multiband MIMO antenna using a symmetric slotted structure for next generation USB dongle application","authors":"Jaehoon Choi, Minseok Han","doi":"10.1109/IMWS2.2011.6027175","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027175","url":null,"abstract":"A compact multiband MIMO antenna using a symmetric slotted structure is proposed for next generation USB dongle applications. The proposed MIMO antenna consists of two triple-band PIFAs with a symmetric slotted structure. The first resonance frequency is controlled by the total length of the main radiating strip with coupling slits (slit 1 and slit 2), which has a length of 70 mm (about 0.18 wavelengths at 0.77 GHz). The second one can be obtained by inserting on additional slit (slit 3) for WCDMA band. Moreover, the third resonance frequency can be tuned by the width of coupling slits (slit 1 and slit 2) and the position of the port 1 and 2 (P1 and P2) to cover M-WiMAX Band (2.5–2.69 GHz). To obtain a high isolation characteristic between two antennas, a symmetric slotted structure and the jointed shorting line are used to reduce the interaction between the two PIFAs. The proposed MIMO antenna has an isolation of approximately 15 dB and the envelope correlation coefficient (ECC) of the two antennas is less than 0.2 over the whole wanted frequency bands.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114343886","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
Dual-frequency antenna for HF/UHF handheld RFID reader 用于HF/UHF手持式RFID阅读器的双频天线
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027174
W. Son, K. Oh, Wang‐Sang Lee, H. Tae, Jong-Won Yu
{"title":"Dual-frequency antenna for HF/UHF handheld RFID reader","authors":"W. Son, K. Oh, Wang‐Sang Lee, H. Tae, Jong-Won Yu","doi":"10.1109/IMWS2.2011.6027174","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027174","url":null,"abstract":"This paper presents a dual-frequency (HF and UHF) antenna for handheld radio frequency identification (RFID) reader to embrace the benefits offered by both the UHF and HF RFID systems. In the HF (13.56 MHz) band, a spiral-shaped loop antenna is used and placed at the outmost region of the available space. In the UHF (915 MHz) band, a quadrifilar spiral antenna (QSA) is used because it is electrically small and features a low frequency shift by platform size and is placed in the center of the HF antenna. Measurements revealed that the antenna provides a quality factor of 56.5 in the 13.56 MHz and a gain of 2.5 dBic in the 920 MHz band.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130456949","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: 12
Design of spiral-shaped UHF near-field reader antenna for RFID applications 用于RFID应用的螺旋形超高频近场读取器天线设计
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027212
Wonseok Lee, K. Oh, Jong-Won Yu
{"title":"Design of spiral-shaped UHF near-field reader antenna for RFID applications","authors":"Wonseok Lee, K. Oh, Jong-Won Yu","doi":"10.1109/IMWS2.2011.6027212","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027212","url":null,"abstract":"A type of ultra-high frequency (UHF, 840–960MHz) band near-field antenna for RFID applications is proposed. The proposed near-field reader antenna consists of two spiral-shaped transmission lines and lines are parallel to each other. By adjusting the distance between two lines of the reader antenna, the strength of the field between two transmission lines and the recognition distance are able to be controlled. The antenna printed on a FR4 printed circuit board (PCB) with an overall size of 150 × 150 × 1 mm. The proposed near-field reader antenna satisfactorily operates in UHF band, and the measurements show that the proposed antenna has bandwidth of about 350MHz and is capable of detecting UHF RFID tags in 11cm distance for 10 dBm incident power.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"4 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116937772","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
A 4-GHz low-power TDC-based all digital PLL having 9.6mW and 1.2ps rms jitter 一个4 ghz低功耗基于tdc的全数字锁相环，具有9.6mW和1.2ps的有效值抖动
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027171
Ja-yol Lee, Mi-Jeong Park, Seongdo Kim, Moo-Yang Park, Hyun-Kyu Yu
{"title":"A 4-GHz low-power TDC-based all digital PLL having 9.6mW and 1.2ps rms jitter","authors":"Ja-yol Lee, Mi-Jeong Park, Seongdo Kim, Moo-Yang Park, Hyun-Kyu Yu","doi":"10.1109/IMWS2.2011.6027171","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027171","url":null,"abstract":"This paper presents a 4-GHz ADPLL with low-power TDC using two low-rate retimed reference clocks (pCKR, nCKR) to measure the fractional phase error between the reference clock edge and DCO clock edge. The application of the retimed reference clocks enables TDC to avoid metastability of its sampling register as well as alleviate large dynamic power of its delay inverter chain. A mode-decision block is also proposed to generate suitable control signals for accomplishing seamless movement of DCO operation mode. The proposed ADPLL achieves − 95 dBc/Hz in-band phase noise and 1.2ps rms jitter, consuming 9.6mW.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128637106","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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