IEIE Transactions on Smart Processing and Computing

The Institute of Electronics and Information Engineers (대한전자공학회)
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Development of Millimeter-Wave Communication Modem for Mobile Wireless Backhaul in Mobile Hotspot Network

  • Choi, Seung Nam (Wireless Transmission Research Department, Electronics and Telecommunications Research Institute) ;
  • Kim, Junhyeong (Wireless Transmission Research Department, Electronics and Telecommunications Research Institute) ;
  • Kim, Il Gyu (Wireless Transmission Research Department, Electronics and Telecommunications Research Institute) ;
  • Kim, Dae Jin (School of Electronics and Computer Engineering, Chonnam National University)
  • Received : 2013.12.20
  • Accepted : 2014.05.12
  • Published : 2014.08.31
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Abstract

The current cellular communications are optimized for low mobility users, meaning that their performance is degraded at high speed. Therefore, passengers in a high-speed train experience very poor radio link quality due to the significantly large number of simultaneous handovers. In addition, wireless data traffic is expanding exponentially in trains, subways and buses due to the widespread use of smartphones and mobile devices. To solve the inherent problem of cellular communication networks and meet the growing traffic demand, this paper proposes the mobile hotspot network of a millimeter-wave communication system as a mobile wireless backhaul. This paper describes the physical layer design of uplink and downlink in the proposed system, and the performances of uplink and downlink are evaluated under Rician fading channel conditions. The implemented baseband prototype of the proposed millimeter-wave communication modem is presented. This system can provide a Gbps data rate service in high-speed trains carrying hundreds of wireless Internet users.

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References

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