In this paper, transmission rate enhancement schemes for DRM (Digital Radio Mondiale), which is a worldwide standard for digital AM and FM broadcasting in the AM and FM bands below 170 MHz, are presented and compared. The data rate of the legacy DRM system is supported up-to 186kbps with 16QAM and MLC (Multi-level Coding) at 100 kHz bandwidth. However, this rate is not sufficient to achieve new high quality services such as loss-less audio broadcasting and mobile TV. In order to increase transmission rates of the DRM system, two different types of FEC (Forward Error Correction) codes are used with 64QAM in the proposed schemes. One is the MLC (Multi-level Coding) derived straightforwardly from the legacy DRM system while the other is the TC (Turbo Code) designed for an enhanced DRM. The proposed schemes can achieve transmission rates higher than 300kbps. Also, compared with MLC, TC has 1.6 dB – 5 dB SNR gain with code rate 1/2 in different channel environments for Band-II.
목차
Abstract 1. Introduction 2. Legacy DRM System Description 3. Enhanced Modes for DRM 3.1. 64QAM and MLC Mode 3.2. 64QAM and TC Mode 3.3. Transmission Rates 4. Simulation Results 5. Conclusion Acknowledgements References
보안공학연구지원센터(IJMUE) [Science & Engineering Research Support Center, Republic of Korea(IJMUE)]
설립연도
2006
분야
공학>컴퓨터학
소개
1. 보안공학에 대한 각종 조사 및 연구
2. 보안공학에 대한 응용기술 연구 및 발표
3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최
4. 보안공학 기술의 상호 협조 및 정보교환
5. 보안공학에 관한 표준화 사업 및 규격의 제정
6. 보안공학에 관한 산학연 협동의 증진
7. 국제적 학술 교류 및 기술 협력
8. 보안공학에 관한 논문지 발간
9. 기타 본 회 목적 달성에 필요한 사업
간행물
간행물명
International Journal of Multimedia and Ubiquitous Engineering
간기
월간
pISSN
1975-0080
수록기간
2008~2016
등재여부
SCOPUS
십진분류
KDC 505DDC 605
이 권호 내 다른 논문 / International Journal of Multimedia and Ubiquitous Engineering Vol.8 No1