Study of Dynamic Spectrum Access Scheme in HD Radio

Abstract:

In HD Radio (Hybrid Digital Radio), the spectra of analog FM and digital signal are combined in a fixed way. However, the bandwidth of FM varies dynamically, which result in the insufficient utilization of spectrum in HD Radio. This paper analyzes the effect of different parameters on dynamic spectrum access scheme in HD Radio. The scheme extends the digital spectrum after detecting the spare spectrum of analog signal. Moreover, the analog signal is maintained a stable quality grade by employing an evaluation measurePEAQ (Perceptual Evaluation of Audio Quality). Simulation results of four programs show that the saved bandwidth of the scheme will achieve average 15 kHz with 42.7 (ms) of frames and dynamic digital spectrum.

• Periodical: Advanced Materials Research (Volumes 774-776)
• Pages: 1685-1689
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.774-776.1685
• Online since: September 2013
• Authors: Wei Wang, Gang Yang, Wei Wei Fang, Wei Jiao
• Keywords: Dynamic Spectrum, HD Radio, PEAQ, Saved Bandwidth

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