Title :
Normalization Factor of Hierarchically Modulated Symbols for Advanced T-DMB System
Author :
Yim, Zungkon ; Jeon, Sungho
Author_Institution :
Broadcast Tech. Res. Inst., Korean Broadcasting Syst. (KBS), Seoul, South Korea
Abstract :
In this paper, we derived the exact formula for the normalization factor of both B-mode and Q-mode hierarchically modulated symbols of the advanced terrestrial digital multimedia broadcasting (AT-DMB) system. This factor is required to scale the average energy of the transmit symbol to one. After investigating the average energy of hierarchically modulated symbols in AT-DMB, we formulate the normalization factor as a term of the constellation ratio. Based on this normalization factor, we have verified the effect after normalization on bit error rate (BER) performance.
Keywords :
digital multimedia broadcasting; error statistics; modulation; AT-DMB system; B-mode hierarchically-modulated symbols; BER performance; Q-mode hierarchically-modulated symbols; advanced T-DMB system; advanced terrestrial digital multimedia broadcasting system; bit error rate performance; constellation ratio; normalization factor; Bit error rate; Euclidean distance; Phase shift keying; Receivers; Signal to noise ratio; Advanced T-DMB; Hierarchical Modulation; Normalization; T-DMB;
Journal_Title :
Broadcasting, IEEE Transactions on
DOI :
10.1109/TBC.2011.2139030
