论文信息 - Power and Bandwidth-Efficient Circular M-Ary APSK Schemes with Low PAPR

Power and Bandwidth-Efficient Circular M-Ary APSK Schemes with Low PAPR

This paper presents a class of circular M-ary Amplitude-Phase Shift Keying (APSK) signaling techniques with high bandwidth efficiency and low peak-to-average power ratio (PAPR) suitable for systems using nonlinear power amplifiers to achieve high power efficiency. For nonlinear amplification, good performance requires not only high squared minimum distance to average power ratio (DPR) but also low PAPR. A search algorithm for M-ary APSK schemes using circular constellations suitable for nonlinear amplification with minimum PAPR and maximum DPR is developed. Results for 8-, 16-, 32-, 64- and 128-APSK signalling schemes are presented. The effects of bandlimiting filter sharpness on the PAPR are examined and considered in the development. The analytical and simulation results show that this class of circular M-ary APSK signals outperforms the square and cross M-ary QAM schemes.

Tho Le-Ngoc | Thai Hoa Vo

[1] Michael Faulkner,et al. Adaptive linearization using predistortion-experimental results , 1994 .

[2] C. Thomas,et al. Digital Amplitude-Phase Keying with M-Ary Alphabets , 1974, IEEE Trans. Commun..

[3] Xiaodai Dong,et al. Signaling constellations for fading channels , 1999, IEEE Trans. Commun..

[4] G. David Forney,et al. Efficient Modulation for Band-Limited Channels , 1984, IEEE J. Sel. Areas Commun..

[5] James K. Cavers,et al. Amplifier linearization using a digital predistorter with fast adaptation and low memory requirements , 1990 .

[6] Brian W. Kernighan,et al. Heuristic solution of a signal design optimization problem , 1973 .

[7] M. Stefanovic,et al. Design of signal constellations for Gaussian channel by using iterative polar quantization , 1998, MELECON '98. 9th Mediterranean Electrotechnical Conference. Proceedings (Cat. No.98CH36056).