Name
Title | ||
|---|---|---|
A Hybrid Amplitude/Time Encoding Scheme for Enhancing Coding Efficiency and Dynamic Range in Digitally Modulated Power Amplifiers |
Abstract | ||
|---|---|---|
Digitally modulated power amplifiers (DMPA) are a promising architecture for practical and highly efficient software-defined radio transmitters. Signal encoding schemes for DMPAs have primarily focused either on amplitude or time domain encoding, neither of which can simultaneously provide high coding efficiency, high dynamic range and low design complexity. In this paper, we propose, analyze and evaluate a new hybrid amplitude/time signal encoding scheme that significantly improves the coding efficiency and dynamic range of DMPAs without significantly increasing design complexity. The proposed hybrid amplitude/time encoding scheme combines both the amplitude domain and the time domain to optimally encode information. Evaluation results show that hybrid amplitude/time encoding yields a 35% increase in the average coding efficiency with respect to conventional time encoding, and is only 6.7% lower than peak efficiency when applied to a Wireless Local Area Network signal with a peak to average power ratio equal to 9.9 dB. A new DMPA architecture, based on the proposed hybrid encoding, is also proposed. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1109/JETCAS.2013.2284616 | IEEE J. Emerg. Sel. Topics Circuits Syst. |
Keywords | Field | DocType |
dmpa,software-defined ratio,digitally modulated power amplifiers,pulse-width modulation,time domain,radio transmitters,hybrid amplitude scheme,domain encoding,power amplifiers,optimally encode information,hybrid encoding,encoding,time encoding scheme,software-defined radio transmitters,wireless local area network signal,high coding efficiency,high dynamic range,software radio,amplitude domain,digital encoder,hybrid amplitude encoding,low design complexity,signal encoding schemes,digitally modulated power amplifier | Time domain,Transmitter,Algorithmic efficiency,Time signal,Dynamic range,Computer science,Real-time computing,Electronic engineering,High dynamic range,Encoding (memory),Amplifier | Journal |
Volume | Issue | ISSN |
3 | 4 | 2156-3357 |
Citations | PageRank | References |
3 | 0.39 | 14 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jingjing Xia | 1 | 12 | 4.20 |
| Siddharth Garg | 2 | 675 | 55.14 |
| Slim Boumaiza | 3 | 65 | 12.40 |