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2015 IEEE International Wireless Symposium (IWS 2015)最新文献

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Polarized modulation scheme for mobile satellite MIMO broadcasting 移动卫星MIMO广播极化调制方案
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164605
Bin Zuo, Kanglian Zhao, Wenfeng Li, Naitong Zhang
{"title":"Polarized modulation scheme for mobile satellite MIMO broadcasting","authors":"Bin Zuo, Kanglian Zhao, Wenfeng Li, Naitong Zhang","doi":"10.1109/IEEE-IWS.2015.7164605","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164605","url":null,"abstract":"A polarized modulation (PM) scheme is proposed for mobile satellite broadcasting (MSB) in this paper. PM employs polarization domain to represent information, which is different from the conventional dual polarization spatial multiplexing (SM) or space time block coding (STBC) schemes in MSB. At any transmission instant, only one polarized antenna is activated, which avoids cross polarization interference and mitigates the possibility of inter-beam interference. A fair system performance evaluation is taken between PM and SM schemes for both single-satellite and dual-satellite cases with practical MIMO land mobile satellite (LMS) channel models. The simulation results show that for same spectral efficiency the proposed PM scheme outperforms SM in different MSB system settings.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"131 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123416935","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
CPW-fed wideband circularly-polarized antenna cpw馈电宽带圆极化天线
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164601
X. Ren, Ruina Lian, Hao Zhang, Yingzeng Yin, S. Gao
{"title":"CPW-fed wideband circularly-polarized antenna","authors":"X. Ren, Ruina Lian, Hao Zhang, Yingzeng Yin, S. Gao","doi":"10.1109/IEEE-IWS.2015.7164601","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164601","url":null,"abstract":"A novel shorted CPW-fed slot antenna with wideband circular polarization characteristic is proposed in this letter. The proposed antenna consists of a bi-directional radiation slot antenna printed on a single substrate and a reflector for unidirectional radiation. A half circle slot and a slim slot are involved to optimize the axial ratio (AR) bandwidth and taper on the feeding line is utilised to further improve the impedance bandwidth. The measured results show that the antenna has the impedance bandwidth (S11 <; -10dB) of 12.6% and the AR bandwidth (AR <; 3dB) of 12.7%. The RHCP gain in the main radiation direction is 7.5 dBi..","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124159007","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
Conceptual design of a triple-band complementary antenna using fractional-order dipole modes 采用分数阶偶极子模式的三波段互补天线的概念设计
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164520
Ying Chen, Bao-Long Jian, Wen‐Jun Lu, Hongbo Zhu
{"title":"Conceptual design of a triple-band complementary antenna using fractional-order dipole modes","authors":"Ying Chen, Bao-Long Jian, Wen‐Jun Lu, Hongbo Zhu","doi":"10.1109/IEEE-IWS.2015.7164520","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164520","url":null,"abstract":"Conceptual design of a novel multi-resonated complementary antenna is proposed. By perpendicularly incorporating an offset microstrip-fed slot radiator and a symmetrical aperture-dipole element, the dominant one half-wavelength mode and two fractional-order dipole modes, i.e., the three quarters-wavelength mode and seven quarters-wavelength mode can be excited and triple-band operation can be obtained. The radiation behavior at 1.10, 1.68 and 4.10 GHz are studied and the operation principle is validated. It is shown that the antenna has stable and unidirectional radiation patterns at the three resonant frequencies.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114462993","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 novel digital post-distortion and detection technique for RF power amplifiers in cognitive radio systems 认知无线电系统中射频功率放大器的一种新型数字后失真检测技术
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164559
M. Ben Mabrouk, G. Ferré, É. Grivel, N. Deltimple
{"title":"A novel digital post-distortion and detection technique for RF power amplifiers in cognitive radio systems","authors":"M. Ben Mabrouk, G. Ferré, É. Grivel, N. Deltimple","doi":"10.1109/IEEE-IWS.2015.7164559","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164559","url":null,"abstract":"This paper deals with digital post-distortion for radio frequency (RF) power amplifiers (PAs) used in cognitive radio (CR) systems. This technique is based on a new approach modelling the PA behavior. The latter characterizes not only the PA non-linearities and memory effects but also its highly-varying behavior with carrier frequency in CR context. Given this modelling, a Kalman algorithm based post-distortion and detection is used to compensate the CR-PA non-linear effect and restore the input signal. This method is suitable for uplink communications in CR context because it saves the consumed power at the transmitter. Finally, this on-line technique does not require known test signals to estimate the PA model parameters.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132193864","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
Modeling of on-chip wireless power transmission system (invited paper) 片上无线电力传输系统的建模(特邀论文)
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164635
S. Raju, C. Prawoto, M. Chan, C. Yue
{"title":"Modeling of on-chip wireless power transmission system (invited paper)","authors":"S. Raju, C. Prawoto, M. Chan, C. Yue","doi":"10.1109/IEEE-IWS.2015.7164635","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164635","url":null,"abstract":"This paper presents a complete model of an on-chip wireless power transmission (WPT) system, which is essential to design a WPT link that can operate at maximum power efficiency within the design constraint of a particular application. In the process of WPT modeling, a unified model of planar inductor was proposed, which captured both PCB and on-chip inductor characteristics. Also, the mutual inductance model between two planar coils was proposed to estimate the energy coupling between the transmitter and receiver. All these models are based on the geometric parameters of the WPT system. An on-chip WPT link was implemented, and the key parameters were characterized and compared with the calculated results to confirm the accuracy of the model.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130855611","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
Empirical equation for carrier power dependence of passive intermodulation product 无源互调积载波功率依赖的经验方程
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164600
M. Ye, Yong-ning He, Hui Zhu
{"title":"Empirical equation for carrier power dependence of passive intermodulation product","authors":"M. Ye, Yong-ning He, Hui Zhu","doi":"10.1109/IEEE-IWS.2015.7164600","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164600","url":null,"abstract":"This paper proposes an empirical equation for input carrier power level dependence of 3rd order reflected passive intermodulation (PIM) product. Three kinds of microwave passive devices, namely, directional coupler, N type coaxial adapter and microstrip line, are measured by the PIM test setup in the 900MHz band. To obtain systematical experimental results, the power levels of the two carriers are tuned in the following three ways: 1. Keep the two carriers with equal amplitude and simultaneously increase both of them; 2. Keep one of the carriers constant and increase the other carrier; 3. Keep the sum of the two carrier power constant and change their ratio. Enlightened by the classic polynomial theory of intermodulation, an empirical equation based on polynomial is proposed to describe the relationship between input carrier power and PIM product. It is found that the empirical equation describes the measurement data very well with the fitting parameters in the equation vary for different devices. The empirical equation can be used as a simple tool of PIM evaluation when engineers tackle problems on site.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115399526","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 balanced reflection type HMIC vector modulator over 34–36GHz based on cold state pHEMTs 基于冷态pHEMTs的34-36GHz平衡反射型HMIC矢量调制器
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164511
Dongquan Sun, Yanyan Fan, Jin-ping Xu, Shu Jiang
{"title":"A balanced reflection type HMIC vector modulator over 34–36GHz based on cold state pHEMTs","authors":"Dongquan Sun, Yanyan Fan, Jin-ping Xu, Shu Jiang","doi":"10.1109/IEEE-IWS.2015.7164511","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164511","url":null,"abstract":"A vector modulatorat Ka band consisting of two balanced I/Q bi-phase attenuatorsis presented in this paper. The bi-phase attenuators are of reflection type, in which cold state pHEMTs are employed as tunable impedance loads. Due to the balanced structure, parasitic effects of the pHEMTs are effectively cancelled. A prototype of the vector modulator is fabricated by HMIC technique. The measured dynamic range of amplitude is about 28dB with 360 degree tunable phase. The maximum transmission coefficient is about -8dB while the return loss is better than 15dB at the whole operation band of 34-36GHz.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117175892","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
14.4-GS/s, 5-bit, 50mW time-interleaved ADC with distributed track-and-hold and sampling instant synchronization for ADC-based SerDes 14.4-GS/s, 5位，50mW时间交错ADC，具有分布式跟踪保持和采样即时同步，用于基于ADC的SerDes
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-27 DOI: 10.1109/IEEE-IWS.2015.7164567
Tao Jiang, P. Chiang
{"title":"14.4-GS/s, 5-bit, 50mW time-interleaved ADC with distributed track-and-hold and sampling instant synchronization for ADC-based SerDes","authors":"Tao Jiang, P. Chiang","doi":"10.1109/IEEE-IWS.2015.7164567","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164567","url":null,"abstract":"A 14.4-GS/s 5-b ADC is designed in 40nm CMOS with eight time-interleaved channels of Flash/Successive-Approximation hybrid sub-ADCs each running at 1.6GS/s. A modified bootstrapped track-and-hold switch incorporates a global clock to synchronize the sampling instant of each individual sub-channel, therefore improving multi-phase alignment. Measurement results show that the ADC can achieve a peak SNDR of 26.5dB, consuming 49.4mW, leading to a FoM of 199fJ/conversion-step, in a core area less than 800μm by 500μm.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123858347","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
Double-layer waveguide-fed high gain antenna array in the 60 GHz band 60 GHz频段双层波导馈电高增益天线阵列
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-22 DOI: 10.1109/IEEE-IWS.2015.7164602
Yue Zhao, K. Luk
{"title":"Double-layer waveguide-fed high gain antenna array in the 60 GHz band","authors":"Yue Zhao, K. Luk","doi":"10.1109/IEEE-IWS.2015.7164602","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164602","url":null,"abstract":"In this report, a double-layer waveguide-fed antenna array is proposed to operate at the 60 GHz band. The simulated results show a maximum gain of 32.7 dBi, a 17% bandwidth centered at approximately 60 GHz and a maximum aperture efficiency of 70%. In addition, the antenna is simple in structure and easy in fabrication.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132156771","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 3-to-7GHz wideband LNA with IIP3 of −2dBm and 0.5dB in-band gain ripple 3- 7ghz宽带LNA, IIP3为- 2dBm，带内增益纹波0.5dB
2015 IEEE International Wireless Symposium (IWS 2015) Pub Date : 2015-07-22 DOI: 10.1109/IEEE-IWS.2015.7164627
H. Cruz, Shuenn-Yuh Lee, C. Luo
{"title":"A 3-to-7GHz wideband LNA with IIP3 of −2dBm and 0.5dB in-band gain ripple","authors":"H. Cruz, Shuenn-Yuh Lee, C. Luo","doi":"10.1109/IEEE-IWS.2015.7164627","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2015.7164627","url":null,"abstract":"This paper presents a wide band LNA for the IEEE 802.11 WLAN. The LNA uses two feedback paths to enhance linearity and in-band gain ripple. The -3 dB bandwidth is 4 GHz with center frequency of 4.7 GHz. The current reuse technique is utilized to reduce the power consumption and the noise figure (NF). Post-Layout simulation results demonstrate that the achievable input third-order intercept point (IIP3) is -2 dBm, and the NF equals 3.07 dB. Using a 0.18 μm CMOS process, the power consumption is 8.8 mW under a supply voltage of 1.8 V. The total area including pads is 1.48 mm×1.51 mm.","PeriodicalId":164534,"journal":{"name":"2015 IEEE International Wireless Symposium (IWS 2015)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117266496","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
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