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Next Generation S-DMB Using Hierarchical Modulation
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- Authors
- Cheon-In Oh
- Issue Date
- 2008-10
- Citation
- IEICE Transactions on Communications, v.E91-B, no.10, pp.3409-3410
- ISSN
- 0916-8516
- Publisher
- 일본, 전자정보통신학회 (IEICE)
- Language
- English
- Type
- Journal Article
- Project Code
- 08MC3300, Development of Sensor Tag and Sensor Node Technologies for RFID/USN, Cheol Sig Pyo
- Abstract
- In this paper, we propose a method to ensure larger number of channels than the current Satellite Digital Multimedia Broadcasting (S-DMB). For Backwards Compatibility (BC) for legacy subscribers, we apply Hierarchical Eight Phase Shift Keying (H-8PSK) modulation and Low Density Parity Check (LDPC) code. Using the newly proposed method, we simulate the performance deterioration of the existing stream and the performance of the new stream according to code rates of LDPC and deviation angle. As the result, we present the optimal deviation angle, which produces the least performance deterioration of the existing system and the best performance of the new system, drawing satisfiable improvement in transmission rate. Copyright © 2008 The Institute of Electronics.
- KSP Keywords
- Backwards Compatibility, Best performance, Digital multimedia broadcasting, Hierarchical modulation, Low density parity check (LDPC) code, Transmission Rate, deviation angle, performance deterioration, phase shift keying