Millimeter-wave universal test bed (MUTB) for high speed communication systems: system architecture and measurement

2003 ◽  
Author(s):  
Yong-Hoon Kim ◽  
Ki-Seok Yang ◽  
Young-Sik Hur ◽  
Ki-Ho Kim
Keyword(s):  
Millimeter Wave ◽  
System Architecture ◽  
Communication Systems ◽  
High Speed ◽  
Test Bed ◽  
Universal Test

scholarly journals Digitally-Compensated Wideband 60 GHz Test-Bed for Power Amplifier Predistortion Experiments

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1473
Author(s):  
Martin Pospíšil ◽  
Roman Maršálek ◽  
Tomáš Götthans ◽  
Tomáš Urbanec
Keyword(s):  
Millimeter Wave ◽  
Power Amplifier ◽  
Communication Systems ◽  
High Speed ◽  
Direct Conversion ◽  
Digital Predistortion ◽  
60 Ghz ◽  
Test Bed ◽  
Front End ◽  
Predistortion Linearization

Millimeter waves will play an important role in communication systems in the near future. On the one hand, the bandwidths available at millimeter-wave frequencies allow for elevated data rates, but on the other hand, the wide bandwidth accentuates the effects of wireless front-end impairments on transmitted waveforms and makes their compensation more difficult. Research into front-end impairment compensation in millimeter-wave frequency bands is currently being carried out, mainly using expensive laboratory setups consisting of universal signal generators, spectral analyzers and high-speed oscilloscopes. This paper presents a detailed description of an in-house built MATLAB-controlled 60 GHz measurement test-bed developed using relatively inexpensive hardware components that are available on the market and equipped with digital compensation for the most critical front-end impairments, including the digital predistortion of the power amplifier. It also demonstrates the potential of digital predistortion linearization on two distinct 60 GHz power amplifiers: one integrated in a direct-conversion transceiver and an external one with 24 dBm output power.

scholarly journals Doppler Shift Estimation for Millimeter-Wave Communication Systems on High-Speed Railways

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 40454-40462 ◽  
Author(s):  
Chong Zhang ◽  
Gongpu Wang ◽  
Minzheng Jia ◽  
Ruisi He ◽  
Li Zhou ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Doppler Shift ◽  
Communication Systems ◽  
High Speed ◽  
Millimeter Wave Communication

scholarly journals On the Feasibility of High Speed Railway mmWave Channels in Tunnel Scenario

2017 ◽  
Vol 2017 ◽  
pp. 1-17 ◽  
Author(s):  
Guangkai Li ◽  
Bo Ai ◽  
Danping He ◽  
Zhangdui Zhong ◽  
Bing Hui ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Communication Systems ◽  
High Speed ◽  
Radio Channel ◽  
Wide Band ◽  
Directional Antenna ◽  
Propagation Loss ◽  
High Rate ◽  
Railway Tunnel ◽  
High Data

Rail traffic is widely acknowledged as an efficient and green transportation pattern and its evolution attracts a lot of attention. However, the key point of the evolution is how to develop the railway services from traditional handling of the critical signaling applications only to high data rate applications, such as real-time videos for surveillance and entertainments. The promising method is trying to use millimeter wave which includes dozens of GHz bandwidths to bridge the high rate demand and frequency shortage. In this paper, the channel characteristics in an arched railway tunnel are investigated owing to their significance of designing reliable communication systems. Meantime, as millimeter wave suffers from higher propagation loss, directional antenna is widely accepted for designing the communication system. The specific changes that directional antenna brings to the radio channel are studied and compared to the performances of omnidirectional antenna. Note that the study is based on enhanced wide-band ray tracing tool where the electromagnetic and scattering parameters of the main materials of the tunnel are measured and fitted with predicting models.

AN INTRODUCTION TO HIGH SPEED TRANSMISSION SYSTEMS AND RELATED DEVICES IN CHINA

1996 ◽  
Vol 07 (03) ◽  
pp. 349-356
Author(s):  
ZI-SEN ZHAO
Keyword(s):  
Optical Communication ◽  
Communication Systems ◽  
High Speed ◽  
Laser Diodes ◽  
Optical Devices ◽  
Test Bed ◽  
Transmission Systems ◽  
Optical Communication Systems ◽  
Comprehensive Test ◽  
Further Development

This paper is an introduction of high speed optical communication systems used in China, especially those deployed by the Ministry of Post and Telecommunication. Practical high speed systems, such as 565 Mb/s system and the optical devices used in these systems manufactured in China are described. Further development of high speed systems and devices such as SDH systems at 622 Mb/s and 2.5 Gb/s, EDFA, MQW laser diodes and a comprehensive test bed are discussed.

scholarly journals Rectangular Waveguide Polymer Microwave Fiber (PMF) Interconnect for Satellite Communication Systems

2021 ◽  
Vol 9 (9) ◽  
pp. 1295-1298
Keyword(s):  
Millimeter Wave ◽  
Communication Systems ◽  
High Speed ◽  
Satellite Communication ◽  
Propagation Constant ◽  
Low Cost ◽  
Data Communication ◽  
Dielectric Waveguides ◽  
Efficient Data ◽  
Ku Band

Research in millimeter-wave dielectric waveguides is recently experiencing high interest in efficient data communication. Generally, channel interconnect remains a challenge for high- speed links design in satellite communication. This paper presents an analysis of Polytetrafluoroethylene (PTFE) interconnect at Ku band owing to its low-cost and efficient throughput. The effect of varying PTFE properties was examined based on the wavelength, propagation constant and attenuation, in other to advise on coating and energy escape outside the Polymer Microwave Fiber (PMF).

DESIGN AND ANALYSIS OF A 60 GHZ MILLIMETER WAVE ANTENNA

2016 ◽  
Vol 78 (4-3) ◽  
Author(s):  
Sana Ullah ◽  
Sadiq Ullah ◽  
Shahbaz Khan
Keyword(s):  
Millimeter Wave ◽  
Patch Antenna ◽  
Communication Systems ◽  
High Speed ◽  
Ground Plane ◽  
Wave Band ◽  
60 Ghz ◽  
Wave Antenna ◽  
Millimeter Wave Band ◽  
Millimeter Wave Antenna

In this paper an inset feed 60 GHz millimeter wave microstrip patch antenna is proposed for future high speed wireless communication systems. The performance of a conventional 60 GHz patch antenna compared with metamaterial-based 60 GHz antennas. The later employs three types (mushroom, cross and hexagonal) of Electromagnetic Bandgap (EBG) surfaces as a ground planes. The millimeter wave antenna employing the cross-shaped EBG give improved gain as compared to the rest of the antenna models. The 60 GHz antenna based on the mushroom type EBG present better efficiency due to the surface suppression by the ground plane. The proposed antennas can be used in future high speed wireless applications. Due to the very small size these antennas are suitable for medical implants operating in the unlicensed millimeter wave band.

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