현재의 이동통신 시스템은 수많은 통신 규격이 공존하는 상태이며, 끊임없이 증가하는 사용자 요구 사항에 따라 계속해서 새로운 규격이 등장할 것이고, 그 속도 또한 빨라지는 추세이다. SDR (Software Defined Radio)은 뛰어난 재구성 능력으로 인해 다양한 서비스와 프로토콜을 지원할 수 있어 현재와 미래의 통신 시스템 간의 상호 운용성을 제공할 수 있는 가장 훌륭한 대안으로 고려된다. 본 논문에서는 SDR 기반 기지국 상용화를 위해 요구되는 핵심 기술과 문제점을 제시하고, HSDPA와 WiMAX를 지원하는 SDR 기반 다중모드 기지국에 대해서 소개한다.
KSP Keywords
Software Defined Radio(SDR)
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