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BCH and LDPC coded wide-band modem for 21-GHz band satellite broadcasting system 用于21ghz波段卫星广播系统的BCH和LDPC编码宽带调制解调器
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2015.7129777
Yoichi Suzuki, Y. Matsusaki, M. Kamei, A. Hashimoto, Takeshi Kimura, S. Tanaka, T. Ikeda
{"title":"BCH and LDPC coded wide-band modem for 21-GHz band satellite broadcasting system","authors":"Yoichi Suzuki, Y. Matsusaki, M. Kamei, A. Hashimoto, Takeshi Kimura, S. Tanaka, T. Ikeda","doi":"10.1109/RWS.2015.7129777","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129777","url":null,"abstract":"The 21-GHz band has been allocated for Ka-band BSS and has a wide bandwidth from 21.4 to 22.0GHz. The 600MHz spectrum allocation is suitable for UHDTV satellite broadcasting. As a countermeasure for rain attenuation due to Ka-band characteristics, a strong forward error correction scheme must be implemented for stable signal reception. We have implemented the concatenated code of BCH and LDPC in the Q/8PSK wide-band modem, whose maximum symbol rate is 250Mbaud. Through measurements, we confirmed clear coding gain against QPSK and 8PSK with no FEC under AWGN.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130820131","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
Digital cancellation technique to mitigate receiver desensitization in cellular handsets operating in carrier aggregation mode with multiple uplinks and multiple downlinks 在具有多个上行链路和多个下行链路的载波聚合模式下运行的蜂窝手机中，用于减轻接收机脱敏的数字对消技术
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2015.7129754
H. Gheidi, H. Dabag, Youjiang Liu, P. Asbeck, P. Gudem
{"title":"Digital cancellation technique to mitigate receiver desensitization in cellular handsets operating in carrier aggregation mode with multiple uplinks and multiple downlinks","authors":"H. Gheidi, H. Dabag, Youjiang Liu, P. Asbeck, P. Gudem","doi":"10.1109/RWS.2015.7129754","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129754","url":null,"abstract":"Recent explosive growth in uplink and downlink carrier aggregation in cellular networks is leading to severe desense in receivers for deployment of certain band combinations. In this paper, we studied receiver desense caused by 2nd order nonlinearity of components in the signal chain. A practical case of two (bands 3 and 8) uplink aggregation and three (bands 3, 8 and 26) downlink carrier aggregation was considered to demonstrate greater than 20dB desense in band 26 receiver despite using state of the art frontend components including linear diplexer with IIP2 greater than +90dBm. We developed a digital cancellation technique that is capable of achieving greater than 20dB improvement in signal-to-interference-plus-noise ratio for 10MHz LTE signals.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127823907","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: 15
Sharp-rejection highpass and dual-band bandpass planar filters with multi-transmission-zero-generation transversal cell 具有多传输零代横向单元的锐阻高通和双带带通平面滤波器
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2015.7129766
Raul Loeches-Sanchez, D. Psychogiou, D. Peroulis, R. Gómez‐García
{"title":"Sharp-rejection highpass and dual-band bandpass planar filters with multi-transmission-zero-generation transversal cell","authors":"Raul Loeches-Sanchez, D. Psychogiou, D. Peroulis, R. Gómez‐García","doi":"10.1109/RWS.2015.7129766","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129766","url":null,"abstract":"A method to produce multiple transmission zeros (TZs) is applied to design sharp-rejection planar highpass filters (HPFs) and dual-passband filters (BPFs). It consists of adding an external transversal cell to a basic filter to create TZs in its response without damaging its in-band amplitude and group-delay variation. Thus, contrary to other filter design techniques, in-band requisites and stopband TZ creation can be separately addressed in the entire filter synthesis process. Such technique could have great potential in other technologies, such as waveguide filters for satellite communications, in which low in-band group-delay variation and adjustable high selectivity are necessary. Measurements for a microstrip HPF and simulations for a stripline dual-band BPF are shown.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124159137","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
Enhancing connectivity for communication and control in Unmanned Aerial Vehicle networks 加强无人机网络通信和控制的连通性
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2015.7129745
D. Rawat, Robin Grodi, C. Bajracharya
{"title":"Enhancing connectivity for communication and control in Unmanned Aerial Vehicle networks","authors":"D. Rawat, Robin Grodi, C. Bajracharya","doi":"10.1109/RWS.2015.7129745","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129745","url":null,"abstract":"Wireless connectivity for communication and control in Unmanned Aerial Vehicles (UAVs) networks is very critical to accomplish an assigned task such as monitoring a given area. Because of dynamic mobility of UAVs, robust adaptive wireless connectivity for UAVs is crucial. In this paper, we analyze the connectivity for UAV networks that is based on density of UAVs, velocity of UAVs, angle of arrival, and transmission range used by UAVs. We evaluate the performance of the proposed approach using numerical results obtained from simulations.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"31 14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116329609","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: 15
Dual-band negative group delay circuit using defected microstrip structure 采用缺陷微带结构的双带负群延时电路
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2015.7129762
G. Chaudhary, P. Kim, Junhyung Jeong, Y. Jeong, Jongsik Lim
{"title":"Dual-band negative group delay circuit using defected microstrip structure","authors":"G. Chaudhary, P. Kim, Junhyung Jeong, Y. Jeong, Jongsik Lim","doi":"10.1109/RWS.2015.7129762","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129762","url":null,"abstract":"This paper demonstrates a design and analysis of a dual-band negative group delay (NGD) network using defected microstrip structure (DMS). The group delays (GD) and signal attenuation (SA) of each band can be controlled independently by resistors connected across U-shaped DMS slots. For the experimental validation, the NGD network is designed and fabricated. For enhancement of the NGD bandwidth, two-stage NGD networks with slightly different center frequencies are connected in cascade. From the measurement, the GDs of -3.86±0.94 ns and -3.26±1.07 ns are obtained at 3.32-3.44 GHz and 4.63-4.76 GHz, respectively.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116867299","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
Ultra-wideband microwave components fabricated using low-cost aerosol-jet printing technology 采用低成本气溶胶喷射打印技术制造的超宽带微波元件
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2015.7129749
X. Lan, Xuejun Lu, Tyler Blumenthal, V. Fratello, W. Chan, M. Truong, K. Kiyono, Yingjie Zhang, Guiru Gu, May Tan
{"title":"Ultra-wideband microwave components fabricated using low-cost aerosol-jet printing technology","authors":"X. Lan, Xuejun Lu, Tyler Blumenthal, V. Fratello, W. Chan, M. Truong, K. Kiyono, Yingjie Zhang, Guiru Gu, May Tan","doi":"10.1109/RWS.2015.7129749","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129749","url":null,"abstract":"In this paper, ultra-wideband RF/Microwave components fabricated using a low-cost aerosol-jet printing technology are demonstrated on a 50 μm thick Kapton film. The demonstrated RF/Microwave components include a four-stage Wilkinson power divider and a novel planar quad Archimedean spiral true-time delay line. The printed power divider has achieved a bandwidth of 2 to 20 GHz with typical 2 dB insertion loss, greater than 25 dB return loss, and better than 25 dB isolation performance across the majority of the band. The printed delay line has demonstrated 2 ns true time delay with excellent delay flatness across the entire band. The performances of the printed RF/Microwave components are comparable to those of semiconductor based monolithic microwave integrated circuits (MMIC).","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117045573","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: 10
A broadband Rx band noise reduction circuit with CMOS switch for multi-band power amplifier 一种用于多波段功率放大器的带CMOS开关的宽带Rx波段降噪电路
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2015.7129735
Yoshifumi Kawamura, S. Shinjo, K. Iyomasa, M. Hirobe, Katsuya Kato, Yoshinori Takahashi, S. Yamabe, K. Horiguchi, M. Hieda, K. Yamanaka
{"title":"A broadband Rx band noise reduction circuit with CMOS switch for multi-band power amplifier","authors":"Yoshifumi Kawamura, S. Shinjo, K. Iyomasa, M. Hirobe, Katsuya Kato, Yoshinori Takahashi, S. Yamabe, K. Horiguchi, M. Hieda, K. Yamanaka","doi":"10.1109/RWS.2015.7129735","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129735","url":null,"abstract":"A broadband Rx band noise reduction circuit for multi-band power amplifiers (PA) is presented. The proposed Rx band noise reduction circuit consists of a Single-Pole Double-Throw (SPDT) switch and an LC resonator with resonant frequency is at the difference frequency between transmit and receive bands. By controlling the connection path of the LC resonator with the SPDT switch, the proposed Rx band noise reduction circuit achieves broadband Rx band noise suppression. In this paper, to clarify the impact of the proposed circuit, the proposed circuit is applied to a multi-band PA. As a result, the proposed Rx noise reduction circuit offers broadband out-of-band noise suppression and improved Rx noise power. In addition, the PA achieves more than 28.5 dBm of output power with power added efficiency (PAE) as high as 37% with a corresponding Rx-noise power of -136.5 dBm/Hz.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126619124","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 fourth order tunable capacitor coupled microstrip resonator band pass filter 一种四阶可调谐电容耦合微带谐振器带通滤波器
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2015.7129763
Shilei Hao, Q. Gu
{"title":"A fourth order tunable capacitor coupled microstrip resonator band pass filter","authors":"Shilei Hao, Q. Gu","doi":"10.1109/RWS.2015.7129763","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129763","url":null,"abstract":"This paper presents a simple and efficient tunable microstrip band pass filter based on the reflected group delay method. The effect of varactor location on the filter performance is investigated in details to guide the filter design. The measured results are consistent with both analytical and simulation results.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131672259","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: 11
Dual-band pattern-reconfigurable Yagi-Uda antenna 双频模式可重构Yagi-Uda天线
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2015.7129758
N. Gagnon
{"title":"Dual-band pattern-reconfigurable Yagi-Uda antenna","authors":"N. Gagnon","doi":"10.1109/RWS.2015.7129758","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129758","url":null,"abstract":"This paper presents a dual-band pattern-reconfigurable Yagi-Uda antenna for use in a wireless network access point. The antenna allows for dual-band operation in the 2450 MHz and 5800 MHz bands with independent radiation pattern reconfiguration in both bands. Five operational cases are presented, with the beam at the two different bands pointing in either the same or opposite directions as well as a case presenting a combination of omnidirectional and lateral directive beams. The unique antenna concept reported is a compact and efficient solution for frequency-band-independent reconfigurable radiation patterns.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115797282","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: 10
Frequency quadrupling transmitter architecture with digital predistortion for high-order modulation signal transmission 高阶调制信号传输中带数字预失真的四倍频发射机结构
2015 IEEE Radio and Wireless Symposium (RWS) Pub Date : 1900-01-01 DOI: 10.1109/RWS.2015.7129771
Youjiang Liu, Gang Liu, P. Asbeck
{"title":"Frequency quadrupling transmitter architecture with digital predistortion for high-order modulation signal transmission","authors":"Youjiang Liu, Gang Liu, P. Asbeck","doi":"10.1109/RWS.2015.7129771","DOIUrl":"https://doi.org/10.1109/RWS.2015.7129771","url":null,"abstract":"This paper demonstrates a novel transmitter architecture based on frequency quadrupling, in which modulated signals are generated at a frequency f0, and subsequently up-converted to 4f0 using a frequency quadrupler. This technique is a promising architecture for mm-wave communications, at frequencies where signal amplification, modulation and distribution at 4f0 are challenging. To achieve acceptable output signal accuracy, predistortion of the input is mandatory. In this work, we validate the architecture using a low (microwave) demonstration frequency of f0= 890MHz, with 4f0=3.56GHz. High-order modulation signals are directly applied to a quadrupler, and “quadrupling digital predistortion” (Q-DPD) is used to restore the signal modulation format at the output. With a 5MHz bandwidth 256-QAM signal, before predistortion the output signal has an error vector magnitude (EVM) of 138%. After Q-DPD, the 256-QAM output signal has an EVM of 1.8% and adjacent channel power ratio (ACPR) of around -43dBc.","PeriodicalId":306938,"journal":{"name":"2015 IEEE Radio and Wireless Symposium (RWS)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116322314","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
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