Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Analysis of LMDS Channel Characteristics for Multimedia Services in Microwave

마이크로파 대역에서 멀티미디어 서비스를 위한 LMDS의 채널 특성 분석

  • 박혁규 (전북대학교 컴퓨터공학과) ;
  • 윤현정 (전북대학교 컴퓨터공학과 전북대학교 컴퓨터공학과 전북대학교 컴퓨터공학과 전북대학교 컴퓨터공학과)
  • Published : 1998.06.01
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Abstract

Due to the increasing demand to multimedia services over wireless communication network, LMDS(Local Multipoint Distribution Service) has been proposed as an alternate approach for broadband wireless access network. But LMDS, Which uses the mmwavelength radio spectrum, has been limited for unknown microwave frequency characteristics. In this paper, we analyze the parameters related to the system design on 28GHz frequency: Propagation path loss and rainfall attenuation. Based on these analytical results, the proper cell size in Korea is determined. We also analyze the bit error rate and frame loss rate for various kinds of digital modulation schemes(QAM 4, 16, 64, 256). Finally, we apply to ㅍ service to evaluate a call blocking rate, efficiency and channel capacity.

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