Computer Science – Information Theory
Scientific paper
2011-03-02
Proceedings of the IEEE Workshop on Signal Processing Systems, SiPS 2011, October 4-7, 2011, Beirut, Lebanon
Computer Science
Information Theory
14 pages, 2 figures, submitted to ISIT 2011
Scientific paper
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.
Hollanti Camilla
Nasser Youssef
Vehkalahti Roope
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