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GNU Radio와 USRP 플랫폼을 이용한 OFDM및 COFDM 구현에 관한 연구
디엔 뉴옌 반(Dien Nguyen Van),투안 뉴옌 안(Tuan Nguyen Anh),티엔 호아 뉴옌(Tien Hoa Nguyen),반 둑 뉴옌(Van Duc Nguyen),노승환(Soonghwan Ro) 한국정보기술학회 2014 한국정보기술학회논문지 Vol.12 No.2
SDR allows users to adjust a system with its flexibility and re-configurability for any frequency band and different modulation of various physical parameters by using programmable hardware and software. In this paper, we implement an Orthogonal Frequency Division Multiplexing (OFDM) system with and without channel coding blocks based on Software-Defined Radio. Quadrature amplitude modulation QAM-16, convolutional encoder with block interleaving algorithm and hard decision Viterbi decoder are deployed for the implementation. Different scenarios have been implemented in real-time wireless transmission in order to evaluate the Packet Failure Rate (PFR). The results show that the introduction of channel coding reduces the PFR of transmitted data signals.