상세정보
학술지
System-Level Performance of Spread Spectrum-Based Add-on Service Overlaid onto the Existing Terrestrial Digital Multimedia Broadcast Band
- 발행일
- 201208
- 출처
- ETRI Journal, v.34 no.4, pp.492-502
- ISSN
- 1225-6463
- 출판사
- 한국전자통신연구원 (ETRI)
- 협약과제
- 11PR4500, 자동인지 T-DMB 재난방송 서비스 기술 개발, 이용태
- 초록
- We consider an overlaid broadcast service, where a spread spectrum (SS)-based broadcast signal is overlaid onto the existing terrestrial Digital Multimedia Broadcasting (T-DMB) band. The system is similar to the augmented data transmission in the ATSC DTV, for which it was investigated mostly in terms of link level performance, such as bit error rate. Our focus in this paper is on the system-level performances. More specifically, utilizing both a large scale path loss and a small scale fading channel model, the primary objective is to explore the tradeoff between the coverage and the achievable rate of the overlaid service and, finally, to determine the achievable rate in the overlaid service for marginal coverage reduction in the existing broadcast service. The analytical and simulation results show that an SS-based add-on service of 10 kbps to 20 kbps can co-exist with the T-DMB service while resulting in only a marginal degradation in T-DMB coverage (for example, less than one percent reduction). © 2012 ETRI.
- KSP 제안 키워드
- Achievable rate, Bit Error Rate(And BER), Broadcast service, Coverage reduction, Data transmission, Digital multimedia broadcasting, Fading Channel Model, Path loss, Percent reduction, Small-scale fading, System-level performance