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引用次数: 1
摘要
本文提出了一种具有高带宽效率和低峰均功率比(PAPR)的圆形M-ary幅相移键控(APSK)信号技术，适用于使用非线性功率放大器的系统，以实现高功率效率。对于非线性放大，良好的性能不仅要求高的平方最小距离平均功率比(DPR)，而且要求低的PAPR。提出了一种适用于最小PAPR和最大DPR非线性放大的圆形星座的M-ary APSK方案搜索算法。给出了8-、16-、32-、64-和128-APSK信令方案的结果。带限滤波器清晰度对PAPR的影响在开发中得到了检验和考虑。分析和仿真结果表明，这类圆形m - mary APSK信号优于方形和交叉m - mary QAM方案。
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.
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