Article | 01-September-2014
OFDM technology has become the core technology of DTMB system. The high Doherty power amplifier can effectively improve the peak-average power ratio of OFDM system, but with poor linear performance. This paper starts with improving linear performance of Doherty power amplifier, analyzes the nonlinear model of power amplifier, presents a construction method of nonlinear performance model of Doherty power amplifier, gets the corresponding nonlinear performance curve, and then presents a design of
Chen Jun,
Su Kaixiong,
Huang Xiyuan,
Yan Lirong
International Journal on Smart Sensing and Intelligent Systems, Volume 7 , ISSUE 3, 1421–1435
Article | 01-June-2020
In this paper, a nonlinear model is proposed for improving the relationship between the size of a cluster and the variance within the cluster. This model describes the most appropriate functional relation between the within-cluster variance and the cluster size. Through this model, we can obtain the optimum size of a cluster and an estimate of the variance between clusters. The proposed model leads to further improvement in the estimation of the optimum size of a cluster, and the formula for
Alok Kumar Shukla,
Subhash Kumar Yadav
Statistics in Transition New Series, Volume 21 , ISSUE 2, 189–200