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- W2068359619 abstract "본 논문에서는 ESPAR 안테나를 사용하여 다이버시티 이득을 얻기 위한 수신기를 제안한다. 수신 신호의 방향이 추정될 경우 추정된 신호의 각에 근접하는 빔을 OFDM 심볼 주기 동안 순차적으로 형성하여 수신함으로써 다이버시티 이득을 얻는다. 제안하는 수신기는 다이버시티 이득을 얻기 위해 단 1개의 RF 체인을 사용한다. 그러나 이러한 방법으로 빔의 방향을 바꾸면서 신호를 수신 할 경우 신호의 스펙트럼이 확장되어 ICI(inter-channel interference)가 발생된다. 이러한 ICI는 주파수 영역의 등화기를 이용하여 등화 할 수 있다. 시뮬레이션 결과, 추정 된 DoA가 <TEX>$60^{circ}$</TEX>, <TEX>$120^{circ}$</TEX>일 때 OFDM 심볼 주기 동안 <TEX>$60^{circ}$</TEX>의 빔과 <TEX>$120^{circ}$</TEX>의 빔을 순차적으로 형성하여 신호를 수신한 결과 다이버시티 성능을 얻을 수 있는 것을 확인하였다. In this paper, we propose receiver using ESPAR antenna for diversity gain. The proposed receiver receive signal by changing direction of beam pattern alternately in the OFDM symbol time period when DoA is estimated. In this way, the proposed receiver obtains diversity gain. The proposed receiver has single RF chain. If beam direction is changed alternately then it causes spectrum spread. And then, ICI occur because of spectrum spread. This interference can be equalized at the frequency domain equalizer such as ZF, MMSE and ML. In simulation, the proposed system receive signal using beam pattern of <TEX>$60^{circ}$</TEX> and beam pattern of <TEX>$120^{circ}$</TEX> alternately in OFDM symbol time period when it is assumed that DoA is <TEX>$60^{circ}$</TEX> and <TEX>$120^{circ}$</TEX>. The performance results confirm that it is possible that the proposed receiver obtains diversity gain." @default.
- W2068359619 created "2016-06-24" @default.
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- W2068359619 date "2014-01-31" @default.
- W2068359619 modified "2023-10-17" @default.
- W2068359619 title "Beam Diversity Receiver Using 7-Element ESPAR Antenna" @default.
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- W2068359619 doi "https://doi.org/10.7840/kics.2014.39a.1.36" @default.
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