Title :
Coding efficiency of RF pulse-width-modulation for mobile communications
Author :
Markert, Daniel ; Haslach, Christoph ; Fischer, Georg ; Pascht, Andreas
Author_Institution :
Bell Labs., Alcatel-Lucent Deutschland GmbH, Stuttgart, Germany
Abstract :
This paper discusses RF-PWM for mobile communication applications focusing on maximal achievable coding efficiency. Coding efficiency is one of the most crucial metrics in evaluating modulation concepts for switch mode amplification. It is shown that the achievable efficiency is mostly dependent on the chosen modulator waveform and the magnitude probability density function of the wanted signal. We determine theoretical limits and unveil unexpected benefits of unipolar waveforms. The results are applied to realistic communication test signals with various system parameter sets.
Keywords :
encoding; mobile communication; modulators; pulse width modulation; RF pulse-width-modulation; RF-PWM; crucial metrics; evaluating modulation concepts; magnitude probability density function; maximal achievable coding efficiency; mobile communication applications; mobile communications; modulator waveform; realistic communication test signals; switch mode amplification; unipolar waveforms; Encoding; Mobile communication; Modulation; Peak to average power ratio; Power generation; Probability density function; Switches; delta-sigma modulation; digital modulation; mobile communications; power amplifier; pulse-width modulation; transceiver;
Conference_Titel :
Signals, Systems, and Electronics (ISSSE), 2012 International Symposium on
Conference_Location :
Potsdam
Print_ISBN :
978-1-4673-4454-8
Electronic_ISBN :
2161-0819
DOI :
10.1109/ISSSE.2012.6374301
