Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Capacity Improvement of Dual-Polarized Antenna Systems in Non-Line-of-Sight Channels

비가시선 채널에서 이중 편파 안테나 시스템의 용량 증대

  • Shin, Changyong (School of Mechanical and ICT Convergence Engineering, Sun Moon University)
  • 신창용 (선문대학교 기계ICT융합공학부)
  • Received : 2015.06.05
  • Accepted : 2015.07.16
  • Published : 2015.07.31
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Abstract

In this paper, we consider the capacity improvement of systems exploiting dual-polarized antennas for two-user transmission. To this end, we analyze the upper bounds of ergodic capacities for multicast and unicast data services in the systems, and propose the condition for adjusting the complex cross-polarization discriminations (XPDs) to maximize the ergodic capacities. In addition, we present the adjustment condition of the complex XPDs that can achieve spectral efficiencies close to the maximum ergodic capacities with lower system complexity. Lastly simulation results demonstrate that the systems using the proposed conditions can obtain higher spectral efficiencies than the ones employing different adjustment conditions including the exiting adjustment condition.

본 논문은 비가시선 채널 환경에서 이중 편파 안테나를 이용하여 두 명의 사용자에게 데이터를 전송하는 시스템의 전송 용량 향상 방안을 고려한다. 이것을 위해 이 시스템의 멀티캐스트 및 유니캐스트 평균 채널 용량의 상한 분석을 수행하여 평균 채널 용량을 최대화하는 복소 교차 편파 식별도의 조절 조건을 제안한다. 또한 최대 평균 채널 용량에 근접한 성능을 달성하면서 동시에 시스템 복잡도를 줄일 수 있는 복소 교차 편파 식별도 조절 조건 역시 제시한다. 마지막으로 시뮬레이션 기반 성능 검증을 통해 제안한 조절 조건을 이용하는 시스템이 현존하는 복소 교차 편파 식별도 조절 조건을 포함한 다양한 다른 조절 조건을 채용하는 시스템 보다 높은 주파수 이용 효율을 획득할 수 있음을 보인다.

Keywords

References

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