Title :
Source-adaptive power allocation for digital modulation
Author :
Görtz, Norbert ; Bresch, Erik
Author_Institution :
Inst. for Commun. Eng., Munich Univ. of Technol., Germany
Abstract :
A novel joint source channel-coding technique called source-adaptive power allocation is introduced for the transmission of continuous-amplitude waveform source samples over a noisy channel. Starting from a binary or quaternary digital modulation scheme we apply a power control, which depends on the unquantized source samples, to the modulation signal points before they are transmitted over the channel. The resulting system shows strongly superior performance compared with conventional schemes.
Keywords :
combined source-channel coding; phase modulation; power control; radio networks; telecommunication channels; telecommunication control; continuous-amplitude waveform source; digital modulation; joint source channel-coding technique; noisy channel; power control; source-adaptive power allocation; Binary phase shift keying; Decoding; Digital modulation; Modulation coding; Multimedia communication; Phase shift keying; Power system modeling; Protection; Quadrature phase shift keying; Radio broadcasting;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2003.821312
