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首页> 外文期刊>Communications, China >Non-overlapping conditions to enable multi- dimensional behavioral models/dpds for multi-band or non-continuous carrier aggregation systems
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Non-overlapping conditions to enable multi- dimensional behavioral models/dpds for multi-band or non-continuous carrier aggregation systems

机译:非重叠条件,可为多频带或非连续载波聚合​​系统启用多维行为模型/ dpd

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摘要

To linearize the multi-band PAs/ transmitters, a serial of multi-band predistortion models based on multi-dimensional architecture have been proposed. However, most of these models work properly only for the signals whose harmonic and intermodulation products of carriers' non-overlap with the interested fundamental bands. In this paper, the non-overlapping conditions for dual-band and tri-band signals are derived and denoted in the form of closed-form expression. It can be used to verify whether a given dual-band/ multi-band signals can be linearized properly by these multi-dimensional behavioral models. Also the conditions can be used to plan the frequency spacing and maximum bandwidth of a multi-band or non-continuous carrier aggregation signal. Several dual-band and triband signals were tested on the same PA, by employing 2-D DPD and 3-D DPD behavioral models. The measurement results show that the signals which don’t satisfy the non-overlapping conditions cannot be linearized well by the multi-dimensional behavioral models which does not take the harmonic and intermodulation products of carriers' into account.
机译:为了线性化多频段功率放大器/发射机,提出了一系列基于多维架构的多频段预失真模型。但是,这些模型中的大多数仅适用于其载波的谐波和互调产物与感兴趣的基带不重叠的信号。本文推导了双频和三频信号的非重叠条件,并以闭环形式表示。可以用来验证给定的双频/多频信号是否可以通过这些多维行为模型正确地线性化。这些条件还可以用于计划多频带或非连续载波聚合​​信号的频率间隔和最大带宽。通过使用2-D DPD和3-D DPD行为模型,在同一PA上测试了几个双频和三频信号。测量结果表明,不考虑载波的谐波和互调产物的多维行为模型不能很好地线性化不满足非重叠条件的信号。

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