Algebraic Hybrid Satellite-Terrestrial Space-Time Codes for Digital Broadcasting in SFN
| Autor: | Hollanti, Camilla, Vehkalahti, Roope, Nasser, Youssef |
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| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Proceedings of the IEEE Workshop on Signal Processing Systems, SiPS 2011, October 4-7, 2011, Beirut, Lebanon |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1109/SiPS.2011.6088980 |
| Popis: | Lately, different methods for broadcasting future digital TV in a single frequency network (SFN) have been under an intensive study. To improve the transmission to also cover suburban and rural areas, a hybrid scheme may be used. In hybrid transmission, the signal is transmitted both from a satellite and from a terrestrial site. In 2008, Y. Nasser et al. proposed to use a double layer 3D space-time (ST) code in the hybrid 4 x 2 MIMO transmission of digital TV. In this paper, alternative codes with simpler structure are proposed for the 4 x 2 hybrid system, and new codes are constructed for the 3 x 2 system. The performance of the proposed codes is analyzed through computer simulations, showing a significant improvement over simple repetition schemes. The proposed codes prove in addition to be very robust in the presence of power imbalance between the two sites. Comment: 14 pages, 2 figures, submitted to ISIT 2011 |
| Databáze: | arXiv |
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