Title :
Performance Improvement of Terrestrial DMB Receivers in Hierarchical Modulation Mode
Author :
Kim, Ji-Hyun ; Kim, Hyoung-Nam ; Lim, Hyoungsoo ; Lim, Jong Soo
Author_Institution :
Dept. of Electron. Eng., Pusan Nat. Univ.
Abstract :
Hierarchical modulation has been considered for higher data rates in terrestrial-DMB systems, which may degrade the performance of legacy receivers. To minimize the degradation, we adopt a decision-directed channel estimation method for phase correction. Simulation results show that the proposed method may secure higher data rates by reducing the degradation caused by hierarchical modulation.
Keywords :
channel estimation; digital audio broadcasting; modulation; multimedia communication; receivers; decision-directed channel estimation method; hierarchical modulation mode; legacy receivers; performance degradation; phase correction; terrestrial DMB receivers; Channel estimation; Code standards; Data engineering; Degradation; Differential quadrature phase shift keying; Digital audio broadcasting; Digital multimedia broadcasting; Liquid crystal displays; OFDM; Signal to noise ratio;
Conference_Titel :
Consumer Electronics, 2007. ICCE 2007. Digest of Technical Papers. International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
1-4244-0763-X
Electronic_ISBN :
1-4244-0763-X
DOI :
10.1109/ICCE.2007.341463
