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2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G)最新文献

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W-band PAM-4 wireless delivery employing intensity modulation and coherent detection based on CMMA equalization 采用强度调制和基于CMMA均衡的相干检测的w波段PAM-4无线传输
2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G) Pub Date : 2019-08-01 DOI: 10.1109/IMC-5G47857.2019.9160364
Wen Zhou, Li Zhao, You-Wei Chen, G. Chang
{"title":"W-band PAM-4 wireless delivery employing intensity modulation and coherent detection based on CMMA equalization","authors":"Wen Zhou, Li Zhao, You-Wei Chen, G. Chang","doi":"10.1109/IMC-5G47857.2019.9160364","DOIUrl":"https://doi.org/10.1109/IMC-5G47857.2019.9160364","url":null,"abstract":"We have experimentally demonstrated PAM-4 signals generation and millimeter wave wireless transmission at 90-GHz W-band, respectively, enabled by using an intensity modulator and coherent receiver. The bit-error-ratio (BER) performance can be improved significantly by the offline digital-signal processing (DSP) including cascaded multi-modulus algorithm (CMMA) equalization at the receiver side. We also investigated the DSP process difference between PAM-2 and PAM-4 signals recovery. The experimental results show that up to 10-Gb/s PAM-2 signal and 12-Gb/s PAM-4 signal over 9-m free space wireless delivery can be realized with a BER less than 7% hard-decision forward-error-correction (HD-FEC) threshold of 3.8x10-3. To the best of our knowledge, this is the first time to achieve W-band PAM signal wireless transmission based on coherent detection. Our proposed scheme has important practical application of significance for the 5G broadband network.","PeriodicalId":373158,"journal":{"name":"2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127623377","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 compact, 42% PAE, two-stage, LDMOS Doherty PA Module for Massive MIMO applications 紧凑，42% PAE，两级，LDMOS Doherty PA模块，适用于大规模MIMO应用
2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G) Pub Date : 2019-08-01 DOI: 10.1109/IMC-5G47857.2019.9160382
H. Ladhani, Elie Maalouf, Jeffrey K. Jones, M. Masood, J. Kenney
{"title":"A compact, 42% PAE, two-stage, LDMOS Doherty PA Module for Massive MIMO applications","authors":"H. Ladhani, Elie Maalouf, Jeffrey K. Jones, M. Masood, J. Kenney","doi":"10.1109/IMC-5G47857.2019.9160382","DOIUrl":"https://doi.org/10.1109/IMC-5G47857.2019.9160382","url":null,"abstract":"Massive MIMO systems for pre-5G and 5G applications have necessitated the development of low power (2-5W average) high efficiency PAs due to the need for multiple PA elements to form a 64, 128 or 256 element array base station system. Such requirements pose several challenges such as the need for high efficiency, linearizability with simple digital predistortion systems, low cost and small form factors. In this paper, we discuss a novel technique for the miniaturization of a fully-integrated, low-cost LDMOS Doherty Power amplifier using ABCD matrix equivalents for the matching networks. A small form factor 50-Ohm in-out Doherty PA is designed for the 2.5-2.7GHz band and its performance is discussed in the context of a low-complexity DPD system with very few coefficients. The PA achieves a PAE of 42% with a gain of 32dB and corrects to -55dBc with a 60MHz (3x20MHz) LTE signal.","PeriodicalId":373158,"journal":{"name":"2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114267125","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
Linearity-aware design of Doherty power amplifiers Doherty功率放大器线性感知设计
2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G) Pub Date : 2019-08-01 DOI: 10.1109/IMC-5G47857.2019.9160390
A. Piacibello, Ricardo Figueiredo, V. Camarchia, M. Pirola, N. Carvalho
{"title":"Linearity-aware design of Doherty power amplifiers","authors":"A. Piacibello, Ricardo Figueiredo, V. Camarchia, M. Pirola, N. Carvalho","doi":"10.1109/IMC-5G47857.2019.9160390","DOIUrl":"https://doi.org/10.1109/IMC-5G47857.2019.9160390","url":null,"abstract":"The linearity is a crucial requirement of power amplifiers. At design level, it is typically assessed by means of AM/AM, AM/PM and IMR, which are extracted from 1- and 2-tone characterization. These however are not fully representative of the actual behaviour under modulated signal excitation, for which purpose other system-level metrics such as the NPR have been successfully introduced. In this paper, different linearity estimations are used to compare two GaN-on-Si Doherty MMIC power amplifiers for Ka-band space applications. One of the two amplifiers shows an AM/PM reduction of more than 30% with respect to the other. However, it is observed that this does not always lead to a reduction in NPR. The reasons for this disagreement between metrics are analysed and discussed.","PeriodicalId":373158,"journal":{"name":"2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G)","volume":"9 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113964376","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 9-Bit Vector-Sum Digital Phase Shifter Using High Resolution VGAs and Compensated Quadrature Signal Generator 一种采用高分辨率vga和补偿正交信号发生器的9位矢量和数字移相器
2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G) Pub Date : 2019-08-01 DOI: 10.1109/IMC-5G47857.2019.9160356
Jie Zhou, H. Qian, Xun Luo
{"title":"A 9-Bit Vector-Sum Digital Phase Shifter Using High Resolution VGAs and Compensated Quadrature Signal Generator","authors":"Jie Zhou, H. Qian, Xun Luo","doi":"10.1109/IMC-5G47857.2019.9160356","DOIUrl":"https://doi.org/10.1109/IMC-5G47857.2019.9160356","url":null,"abstract":"In this paper, a 90–98 GHz vector-sum digital phase shifter with high phase accuracy and low power consumption is presented for W-band phased-arrays. The proposedphase shifter is based on a quadrature all-pass filter (QAF) and four identical variable gain amplifiers (VGAs) with 7-bit current-digital to analog converters (I-DACs). To eliminate the parasitic loading capacitance influence of the VGAs on the QAF, a inductor-based compensation network is utilized. Then, specific phase shifting could be obtained. Meanwhile, the digital pre-distortion (DPD) technology is used to further improve the phase error performance. To verify the mechanisms mentioned above, a W-band digital phase shifter is implemented and fabricated in a 40-nm CMOS technology with a core size of 0.058 mm2. The measured results after DPD exhibit the root mean square (RMS) amplitude error of 0.67-1.23 dB and RMS phase error of 0.60°-0.71° from 90 to 98 GHz. Additionally, the phase shifter features an average gain of -1.29 dB at 92.1 GHz with a power consumption of 14 mW from 1.1 V supply.","PeriodicalId":373158,"journal":{"name":"2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128820716","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
Pattern Sensing Based Digital Predistortion of RF Power Amplifiers under Dynamical Signal Transmission 动态信号传输下基于模式感知的射频功率放大器数字预失真
2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G) Pub Date : 2019-08-01 DOI: 10.1109/IMC-5G47857.2019.9160384
H. Yin, Chao Yu, Qianyun Lu, J. Xia, Xiaowei Zhu, W. Hong, A. Zhu
{"title":"Pattern Sensing Based Digital Predistortion of RF Power Amplifiers under Dynamical Signal Transmission","authors":"H. Yin, Chao Yu, Qianyun Lu, J. Xia, Xiaowei Zhu, W. Hong, A. Zhu","doi":"10.1109/IMC-5G47857.2019.9160384","DOIUrl":"https://doi.org/10.1109/IMC-5G47857.2019.9160384","url":null,"abstract":"In this paper, a pattern sensing based digital predistortion (DPD) technique for radio frequency (RF) power amplifiers (PAs) under dynamical signal transmission is proposed. Unlike conventional methods where real time re-calibration is required, this approach utilizes a low resolution amplitude-modulation to amplitude-modulation (AM/AM) pattern to sense PA characteristics and then quickly select proper DPD coefficients to linearize the PA. Experimental results show that the proposed method can provide an efficient a nd effective w ay to deal with complex dynamic signal transmission scenarios and maintain very good linearization performance, which is very suitable for future 5G applications.","PeriodicalId":373158,"journal":{"name":"2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G)","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117332107","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
Dual-Polarized Substrate-Integrated-Waveguide Cavity-Backed Monopulse Antenna Array for 5G Millimeter-Wave Applications 5G毫米波应用的双极化基板集成波导腔背单脉冲天线阵列
2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G) Pub Date : 2019-08-01 DOI: 10.1109/IMC-5G47857.2019.9160387
Chenhao Chu, Jianfeng Zhu, S. Liao, Q. Xue, A. Zhu
{"title":"Dual-Polarized Substrate-Integrated-Waveguide Cavity-Backed Monopulse Antenna Array for 5G Millimeter-Wave Applications","authors":"Chenhao Chu, Jianfeng Zhu, S. Liao, Q. Xue, A. Zhu","doi":"10.1109/IMC-5G47857.2019.9160387","DOIUrl":"https://doi.org/10.1109/IMC-5G47857.2019.9160387","url":null,"abstract":"This paper presents a new substrate-integrated-waveguide (SIW) cavity-backed antenna array with dual-polarization monopulse radiation patterns. The monopulse comparator is realized by using SIW magic Tee that is directly fed by the WR-15 waveguide for wide phase balanced bandwidth. The radiating part is implemented by using aperture coupled cross-shaped patches that are enclosed by metallized cavity. In order to realize dual polarizations with high isolation, two independent monopulse feed networks are designed in two different layers and positioned orthogonally to feed the array. Taking advantages of good performance of the SIW-based magic Tee, the monopulse antenna array shows good performance including stable sum and difference patterns with high null-depth from 57.5 GHz to 64.2 GHz.","PeriodicalId":373158,"journal":{"name":"2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115326093","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
Parallel-Processing-Based Digital Predistortion Architecture and FPGA Implementation for Wide-band 5G Transmitters 基于并行处理的宽带5G发射机数字预失真架构及FPGA实现
2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G) Pub Date : 2019-08-01 DOI: 10.1109/IMC-5G47857.2019.9160360
Hai Huang, J. Xia, S. Boumaiza
{"title":"Parallel-Processing-Based Digital Predistortion Architecture and FPGA Implementation for Wide-band 5G Transmitters","authors":"Hai Huang, J. Xia, S. Boumaiza","doi":"10.1109/IMC-5G47857.2019.9160360","DOIUrl":"https://doi.org/10.1109/IMC-5G47857.2019.9160360","url":null,"abstract":"This paper presents a bandwidth-scalable and hardware-efficient p arallel-processing-based D PD architecture for wide-band 5G transmitters. By computing multiple data samples at each clock cycle in parallel, the proposed DPD architecture extends the bandwidth of a conventional serial DPD architecture, as limited by the maximum FPGA clock rate, to a much higher rate that is proportional to the number of parallel data paths. With a cross-bar structure devised to reroute the intermediate computation results between the parallel data paths, it allows advanced DPD model with memory and cross-terms to be constructed efficiently. F or proof-of-concept, the pruned Complexity-Reduced-Volterra (CRV) DPD with four parallel data paths has been implemented using an Xilinx Ultrascale+ FPGA to achieve a total linearization bandwidth of 1.25 GHz. Subsequently, a 28 GHz power amplifier modulated with 400 MHz QAM64 signals has been successfully linearized in the proposed DPD system in real-time.","PeriodicalId":373158,"journal":{"name":"2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126988824","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
88.9-GHz W-Band Multi-Channel Integrated Fiber-Wireless Access Network with KK Coherent Receiver 带KK相干接收机的88.9 ghz w波段多通道综合光纤无线接入网
2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G) Pub Date : 2019-08-01 DOI: 10.1109/IMC-5G47857.2019.9160389
Shang-Jen Su, You-Wei Chen, Shuyi Shen, G. Chang
{"title":"88.9-GHz W-Band Multi-Channel Integrated Fiber-Wireless Access Network with KK Coherent Receiver","authors":"Shang-Jen Su, You-Wei Chen, Shuyi Shen, G. Chang","doi":"10.1109/IMC-5G47857.2019.9160389","DOIUrl":"https://doi.org/10.1109/IMC-5G47857.2019.9160389","url":null,"abstract":"A novel fiber-wireless integrated access system supporting multi-channel data transmission via the same network infrastructure was experimentally demonstrated with a proposed KK receiver over baseband/IF and W-band at 88.9GHz. By tuning the operating wavelength of the optical carrier, the signal is available to be transmitted over different frequency ranges with over 21 dB optical power margin, and the system can serve up to 128 subscribers.","PeriodicalId":373158,"journal":{"name":"2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126769881","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
Phase Calibration of a Massive MIMO System for Direction of Arrival Applications 面向到达方向的大规模MIMO系统相位标定
2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G) Pub Date : 2019-08-01 DOI: 10.1109/IMC-5G47857.2019.9160375
M. Al-Dabbagh, Abdo Gaber, A. Omar
{"title":"Phase Calibration of a Massive MIMO System for Direction of Arrival Applications","authors":"M. Al-Dabbagh, Abdo Gaber, A. Omar","doi":"10.1109/IMC-5G47857.2019.9160375","DOIUrl":"https://doi.org/10.1109/IMC-5G47857.2019.9160375","url":null,"abstract":"In this paper we perform a Uniform Linear Array (ULA), Multiple Input Multiple Output (MIMO) system calibration, to measure the Direction of Arrival (DoA) of multiple User Equipment (UE). We consider wired, wireless, Over-the-Air (OTA) calibration operations. The calibrated signals are then processed using Matrix Pencil (MP) estimation technique to achieve the DoA measurements. The results show that DoA stability and accuracy can be achieved using both of the procedures. The results show that an offline calibration vector can be a replacement for real time calibration. It also shows the feasibility of mutual wireless calibration among distant wireless systems, to avoid the need for the costly, and permeant wired calibration connections.","PeriodicalId":373158,"journal":{"name":"2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126591210","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
Reliable Multi-user Uplinks in Fiber-Wireless Integrated Network using Quasi-orthogonal Chirp Spreading OFDM 准正交啁啾扩展OFDM在光纤无线综合网络中的可靠多用户上行链路
2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G) Pub Date : 2019-08-01 DOI: 10.1109/IMC-5G47857.2019.9160370
You-Wei Chen, P. Peng, Long Huang, G. Chang
{"title":"Reliable Multi-user Uplinks in Fiber-Wireless Integrated Network using Quasi-orthogonal Chirp Spreading OFDM","authors":"You-Wei Chen, P. Peng, Long Huang, G. Chang","doi":"10.1109/IMC-5G47857.2019.9160370","DOIUrl":"https://doi.org/10.1109/IMC-5G47857.2019.9160370","url":null,"abstract":"We experimentally demonstrate a grant-free multiuser upstream with a quasi-orthogonal chirp spreading (QOCS) orthogonal frequency division multiplexing (OFDM) in an intensity-modulation and direct-detection based fiber-wireless convergence over 120-cm wireless and 25-km fiber transmission. By applying the frequency chirp spreading, user subcarriers in a widely-adapted OFDM are re-allocated into the coding channels and occupies the whole available bandwidth. Time and frequency resources can be shared and fully utilized for all active users. Without a time-consuming request-and-grant process, the proposed scheme is suitable for the low-latency and emergency communications. The experimental results reveal a high tolerance of multi-user interference and a less than 3% of error vector magnitude degradation is measured in the most critical scenario that randomly distributed users are totally active and temporally overlapped. Furthermore, a 21.9 dB system power budget is achieved after 25-km fiber transmission. Therefore, our proposed scheme exhibits a high-reliability for the next generation low-latency applications in a fiber-wireless convergence network.","PeriodicalId":373158,"journal":{"name":"2019 IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond (IMC-5G)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125080439","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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