电子科技大学学报2017，Vol.46Issue(1)：21-26,6.DOI:10.3969/j.issn.1001-0548.2017.01.004
一种降低OFDM误码率及立方度量值的凸优化算法
A Convex Optimization Algorithm for Reducing the Ber and Cubic Metric in OFDM Systems
摘要
Abstract
Since cubic metric (CM) can more accurately predict the power de-rating of power amplifier (PA), it is recognized as a better metric to characterize the envelope fluctuations of orthogonal frequency division multiplexing (OFDM) signals than peak-to-average power ratio (PAPR). To improve the PA efficiency, a common scheme is minimizing the CM value of signals. However, this aggravates the in-band distortion, resulting in bit error ratio (BER) degradation of systems. This paper formulates the problem as an in-band distortion optimization subject to CM constraint, and a customized interior-point algorithm is developed to solve the optimization problem. Simulation results show that the proposed algorithm provides better BER and CM-reduction performance than existing optimization schemes.关键词
误码率/凸优化算法/立方度量/OFDM系统/功率峰均比Key words
bit error ratio/convex optimization algorithm/cubic metric/OFDM system/peak-to-average power ratio分类
信息技术与安全科学引用本文复制引用
张翔引,朱晓东,唐友喜..一种降低OFDM误码率及立方度量值的凸优化算法[J].电子科技大学学报,2017,46(1):21-26,6.基金项目
国家自然科学基金(61101034,61271164,61471108)；国家重大专项(2014ZX03003001-002)；863项目(2014AA01A704) （61101034,61271164,61471108）
