This paper analyzes the influence of the delay estimation error on the performance of the predistorter. The evaluation criteria are the adjacent channel power ratio ( ACPR ) and the normalized mean square error ( NMSE ). 该文以邻近信道功率比(ACPR)和归一化均方误差(NMSE)两项指标作为衡量标准,研究了延时估计误差对间接学习结构预失真器补偿性能的影响。
Analysis of Influence of Low Frequency Factor to Adjacent Channel Power(ACP) Leakage of Power Amplifier Used for W-CDMA Handset W-CDMA手机用功放的临道泄漏的低频因素分析
This technique can efficaciously correct for both amplitude and phase distortion of power amplifiers. 2. Individually controlled by look-up table and adjacent channel power minimization, two kinds of adaptive predistortion linearizer are formed and simulated with computer. 使用查表法和邻道功率最小法建立了两种自适应预失真线性功率放大器,仿真结果表明,采用自适应技术可以提高预失真线性功率放大器功率动态范围。
The modeling performance is assessed in terms of in-band and out-of band errors, such as normalized mean square error and adjacent channel error power ratio, and it is compared with a conventional NARMA, a memory polynomial with respect to accuracy and computation complexities. 广义NARMA模型性能通过使用归一化的均方误差和邻道误差功率比等带内和带外失真误差进行评价,并且在计算精度和计算复杂性方面和传统的NARMA模型及记忆多项式模型进行比较。
For implement of wide band modulation, multi-carries and elimination of adjacent channel interference to satisfy BER requirement in WCDMA system, which is most popular in 3G technology, the linearity requirement of the base station power amplifier becomes tighter. index; 以WCDMA为代表的第三代移动通信技术,为实现宽带调制、多载波应用,同时减小邻信道干扰以满足通信系统的误码率要求,对基站发射机功放的线性指标要求苛刻。