A Method of Dynamic Spectrum Access in HD Radio Based on BP Neural Network

2014 ◽  
Author(s):  
Wei Wang ◽  
Jin Liu ◽  
Fei Yang ◽  
Chao-Shi Cai
Keyword(s):  
Neural Network ◽  
Bp Neural Network ◽  
Dynamic Spectrum Access ◽  
Dynamic Spectrum ◽  
Spectrum Access ◽  
Hd Radio

A Dynamic Spectrum Access Method for IBOC Broadcasting Based on the Ear Perception

2013 ◽  
Vol 816-817 ◽  
pp. 839-842 ◽  
Author(s):  
Wei Jiao ◽  
Gang Yang ◽  
Wei Wei Fang
Keyword(s):  
Dynamic Spectrum Access ◽  
Digital Signal ◽  
Dynamic Spectrum ◽  
Spectrum Access ◽  
Time Dimension ◽  
Access Method ◽  
Audio Quality ◽  
Perceptual Evaluation ◽  
Digital Broadcasting ◽  
Hd Radio

In-Band On-Channel (IBOC) as an AM&FM digital broadcasting technology is used in HD Radio standard. In Hybrid of HD Radio, the spectra of analog FM signal and digital signal are combined in a fixed way, without taking full advantage of spectra. To solve this problem, this paper presents a Dynamic Spectrum Access (DSA) method, using the idle spectrum on time dimension. And the improved method brings in a Perceptual Evaluation of Audio Quality (PEAQ) module based on the ear perception as the evaluation criterion to measure audio quality. The simulation results show that on the basis of insuring audio quality, this method can save a lot of spectral bandwidth to improve the available spectrum resources.

Study of Dynamic Spectrum Access Scheme in HD Radio

2013 ◽  
Vol 774-776 ◽  
pp. 1685-1689 ◽  
Author(s):  
Wei Wang ◽  
Gang Yang ◽  
Wei Wei Fang ◽  
Wei Jiao
Keyword(s):  
Dynamic Spectrum Access ◽  
Digital Signal ◽  
Dynamic Spectrum ◽  
Analog Signal ◽  
Spectrum Access ◽  
Digital Radio ◽  
Perceptual Evaluation ◽  
Digital Spectrum ◽  
Access Scheme ◽  
Hd Radio

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.

Dynamic Spectrum Access to the Combined Resource of Commercial and Public Safety Bands Based on a WCDMA Shared Network

2009 ◽  
Vol E92-B (12) ◽  
pp. 3581-3585
Author(s):  
Hyoungsuk JEON ◽  
Sooyeol IM ◽  
Youmin KIM ◽  
Seunghee KIM ◽  
Jinup KIM ◽  
...  
Keyword(s):  
Public Safety ◽  
Dynamic Spectrum Access ◽  
Dynamic Spectrum ◽  
Spectrum Access ◽  
Shared Network
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