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학술지 Robust Digital Retrodirective Beamforming Technique for Multipath Channel Environment
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저자
안창영, 장국한, 유흥균, 최진규, 조한벽
발행일
201508
출처
Procedia Computer Science, v.56, pp.427-432
ISSN
1877-0509
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.procs.2015.07.231
협약과제
15GC2100, 철도전용 무선통신망 표준화 연구, 조한벽
초록
In this paper, we describe the effect of temporal and spatial focusing obtained by using the digital retrodirective beamforming (DRDB) system and analyze BER performance of DRDB in multipath channel. There is a problem with reception performance degraded due to inter symbol interference (ISI) in multipath channel. In order to reduce ISI, the existing communication system use complex equalizer. In order to reduce ISI, we propose a DRDB system which can retransmit data information toward direction as the received signal without any prior information. Also, we explain ISI mitigation by temporal and spatial focusing of the proposed system. Simulation results show that the proposed system has better BER performance than that without DRDB because of ISI mitigation effect in multipath channel environment.
키워드
Digital retrodirective beamforming, DRDB, Multipath channel, Retrodirective antenna
KSP 제안 키워드
BER performance, Beamforming technique, Communication system, Inter-Symbol-Interference(ISI), Mitigation effect, Multipath channels, Spatial focusing, data information, prior information, retrodirective antenna(RDA), simulation results