HD-Radio 와 DAB 시스템의 성능비교

In this paper, the performance of digital radio systems are evaluated and compared there exist two types of digital audio system currently available: IBOC and Eureka-147. HDR(HD-Radio) standard of IBOC (In-Band-On-Channel) can use coherent demodulation using pilot sub-carriers. But DAB standard of Eureka-147 uses non-coherent demodulation by differential modulation. Theoretically, coherent demodulation is better than non-coherent demodulation. Each method develops different frequency band target, so using same channel model is not appropriate. For that reason we use the channel model offered by each standard developer to evaluate the performance of each system.