2003 IEEE Topical Conference on Wireless Communication Technology最新文献_第6页

Wideband slot bow-tie antennas for radar applications 用于雷达应用的宽带槽领结天线

2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321597

A. Eldek, A. Elsherbeni, C.E. Smith

引用次数: 27

Multiuser detector combining multicarrier transmission and decorrelating detector in a Rayleigh fading channel 瑞利衰落信道中多载波传输和去相关检测器相结合的多用户检测器

2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321446

J. Kim, Wan Choi

引用次数: 0

A 120-degree beamwidth post-wall waveguide slot array with a three-way power divider on a single-layer dielectric substrate 一种在单层介质基板上具有三路功率分配器的120度波束宽度后壁波导槽阵列

2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321557

S. Yamamoto, Nozoniii Hikono, J. Hirokawa, M. Ando

引用次数: 8

Realized case of smart antenna in mobile communication systems 智能天线在移动通信系统中的实现案例

2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321478

Y. Doi, Jun Kitakado, Tadayoshi Ito, T. Miyata, S. Nakao, T. Ohgane, Y. Ogawa

{"title":"Realized case of smart antenna in mobile communication systems","authors":"Y. Doi, Jun Kitakado, Tadayoshi Ito, T. Miyata, S. Nakao, T. Ohgane, Y. Ogawa","doi":"10.1109/WCT.2003.1321478","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321478","url":null,"abstract":"Summary form only given. Recently, many spatial signal processing technologies based on plural antennas and signal processing has been studied. It is well known that the technologies, i.e., adaptive array, space division multiple access (SDMA), and multi-input multi-output (MIMO) provide increasing communication quality, spectrum efficiency, and throughput. However, the technologies are not yet almost utilized for the actual product. In order to introduce the spatial signal processing technologies to real commercial products, we have studied and developed them. We consider that a mobile terminal has a limitation of performance of a processor and power consumption. Therefore, we have studied the technologies that do not require heavy performance for a mobile terminal. In this paper, we present results of our research and development: the adaptive array PHS base station, SDMA PHS test bed, MIMO PHS test bed, and adaptive array WLAN test bed. We have carried out field tests for the AA PHS BS in Tokyo. The results of the field test show that the AA PHS BS increases the system traffic by about 11% and reduces interference level as compared with the existing PHS BS. Results of the field test for the SDMA PHS test bed indicate that the SDMA test bed improves the traffic by about 2.4 to 2.7 times, and can coexist with the existing PHS BS. Results of the indoor test for the MIMO PHS test bed indicate that the test bed establishes two stable paths if the MIMO BS antenna distance is larger than 1.0 /spl lambda/ and the MIMO terminal antenna distance is larger than 0.3 /spl lambda/. We also have developed an adaptive array test bed for the wireless LAN, i.e., IEEE 802.11b. Results of the field test show that the AA-WLAN test bed expands communication distance by 1.9 times, and increases average throughput.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"68 1","pages":"180-"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82345274","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

SOC technology for future wireless communications 面向未来无线通信的SOC技术

2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321418

C. Hewes

引用次数: 4

Millimeter-wave ad-hoc wireless access system. (1) System overview 毫米波自组织无线接入系统。(1)系统概述

2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321535

Y. Shoji, K. Hamaguchi, H. Ogawa, A. Akeyama, Y. Shiraki, K. Yoshida, T. Hirose, H. Shimawaki, K. Sakamoto

引用次数: 4

Design issues of ultra-wideband systems for high-rate wireless PANs: modulation schemes and coexistence with WLANs 高速无线广域网的超宽带系统设计问题:调制方案及与广域网的共存

2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321603

Jeong-Heon Lee, Tae-Jin Lee

{"title":"Design issues of ultra-wideband systems for high-rate wireless PANs: modulation schemes and coexistence with WLANs","authors":"Jeong-Heon Lee, Tae-Jin Lee","doi":"10.1109/WCT.2003.1321603","DOIUrl":"https://doi.org/10.1109/WCT.2003.1321603","url":null,"abstract":"Summary form only given. We adopt a general Gaussian function shifted in time by 0.5 ns and truncated at /spl plusmn/0.25 ns and its derivatives for a UWB waveform and its shaping, and employ a TH-SS (time hopping spread spectrum) technique. Three types of typical data modulation schemes - PPM, BPSK and BPAM - are used. It is important to choose an appropriate modulation scheme that has a smooth spectrum reducing the spectral lines to result in maximum power efficiency because of possible limits on the UWB transmit power emission level for wireless network applications. The adopted UWB systems are designed to consume extremely low AC power. We describe some UWB features which attract many battery operated mobile applications such as WPANs. The UWB signal can be seen as random noise to the IEEE 802.11 WLAN signal, whose bandwidth is 22 MHz. The bandwidth of the WLAN interference signal is only a small fraction of the UWB signal bandwidth, which means that the UWB system has robust noise performance. The transmitted average power of the UWB signal is extremely low. Therefore, the WLAN and WPAN systems can coexist in the same 2.4 GHz ISM band.","PeriodicalId":6305,"journal":{"name":"2003 IEEE Topical Conference on Wireless Communication Technology","volume":"9 1","pages":"459-460"},"PeriodicalIF":0.0,"publicationDate":"2003-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86220076","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

Design of broadband modified folded slot antennas for C-band wireless applications 面向c波段无线应用的宽带改进型折叠槽天线设计

2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321464

R. Usaha, M. Ali

引用次数: 2

Design of a multi-band antenna array using CTS and photonic band gap technologies 基于CTS和光子带隙技术的多波段天线阵列设计

2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321519

M. Iskander, R. Isom, T. Heffner, Z. Yun, W. Milroy

引用次数: 2

Evaluation of induced SAR in the human body due to EM waves emitted from a dipole antenna at 400 MHz band 400兆赫波段偶极子天线发射的电磁波对人体诱导SAR的评估

2003 IEEE Topical Conference on Wireless Communication Technology Pub Date : 2003-10-15 DOI: 10.1109/WCT.2003.1321486

T. Fujino, A. Hirata, T. Shiozawa

引用次数: 1