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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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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
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
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
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
Duplexer application for a band-pass filter with open stub using parallel coupled-line 双工器应用于使用平行耦合线的开存根带通滤波器
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027218
T. Jung, K. Yoon, Dong-Ki Lee, H. Nam, Hyunwook Lee, Jae-Yeong Lee, Kyo-Soon Choi, M. Lim, Jong‐Chul Lee
{"title":"Duplexer application for a band-pass filter with open stub using parallel coupled-line","authors":"T. Jung, K. Yoon, Dong-Ki Lee, H. Nam, Hyunwook Lee, Jae-Yeong Lee, Kyo-Soon Choi, M. Lim, Jong‐Chul Lee","doi":"10.1109/IMWS2.2011.6027218","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027218","url":null,"abstract":"In this paper, a duplexer using the open stub band-pass filter(BPF) with parallel coupled line is presented. The suggested duplexer is composed of distributed elements and planar substrate and it has characteristic of excellent isolation. The operating frequencies of the duplexer are respectively 5.8 GHz and 4.8 GHz at the RX and TX for C-band wireless communication systems. Also, the deviation frequency is 40 MHz and the bandwidth of filter is 10 %. The experimental results for insertion losses of filters are less than 2 dB at RX and TX, while the return losses are better than 15 dB.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"12 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":"127187513","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
User cooperation-assisted multi-cell MIMO networks 用户协作辅助多小区MIMO网络
2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals Pub Date : 2011-09-26 DOI: 10.1109/IMWS2.2011.6027189
W. Shin, N. Lee, Jong-Bu Lim, Changyong Shin, Kyunghun Jang, Yoon-Chae Cheong
{"title":"User cooperation-assisted multi-cell MIMO networks","authors":"W. Shin, N. Lee, Jong-Bu Lim, Changyong Shin, Kyunghun Jang, Yoon-Chae Cheong","doi":"10.1109/IMWS2.2011.6027189","DOIUrl":"https://doi.org/10.1109/IMWS2.2011.6027189","url":null,"abstract":"We explore the interplay between interference, cooperation, and feedback in multi-cell networks. Specifically, this paper focuses on G-cell multiple-input multiple-output Gaussian interfering broadcast channels (MIMO-IFBC) with K cooperating users on the cell-boundary of each base station. It corresponds to a downlink scenario for cellular networks with G base stations, and K users equipped with Wi-Fi interfaces enabling to cooperate among users on a peer-to-peer basis. In this scenario, we propose a novel interference alignment technique exploiting user cooperation. Our proposed algorithm obtains the total degrees of freedom (DoF) of GK to be achieved by transmitting one stream to each user from its corresponding BS, when each BS and cell-edge user has M = K + (G − 1)dalign transmit antennas and N = ⌊(M(G − 1)(K − dalign) + 1)/K⌋ receive antennas as a minimum antenna configuration, respectively, where ∀dalign ∈ {1,2,…K}. Furthermore, the algorithm requires only a small amount of channel feedback information with the aid of the user cooperation channels. The simulations demonstrate that not only are the analytical results valid, but the achievable DoF of our proposed algorithm also outperforms those of conventional techniques.","PeriodicalId":367154,"journal":{"name":"2011 IEEE MTT-S International Microwave Workshop Series on Intelligent Radio for Future Personal Terminals","volume":"50 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":"130171886","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 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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