MIMO OFDM中通过连续候选生成的概率信号整形

R. Fischer, C. Siegl
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引用次数: 2

摘要

本文对最近提出的基于信道编码的峰值平均功率比(PAR)降低方法进行了进一步的发展。一方面,不仅考虑了PAR,而且通过定义要最小化的相应度量来处理要优化的广泛的信号参数。另一方面,依次进行候选项的生成和评估。如果满足给定的可容忍度量限制,则过程停止。导出了平均考生人数和达到的成绩的解析表达式。定义了临界度量值,作为“临界”PAR值ξ = log(D)的概括,其中D是载流子的数量。理论陈述是通过使用PAR或立方度作为所需信号参数的数值模拟来涵盖的。版权所有©2010 John Wiley & Sons, Ltd
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Probabilistic signal shaping in MIMO OFDM via successive candidate generation
In this paper, the recently introduced method of channel-coding-based peak-to-average power ratio (PAR) reduction is further developed. On the one hand, not only PAR is considered, but a broad class of signal parameters to be optimised is treated by defining a respective metric to be minimised. On the other hand, the candidate generation and assessment is done successively. If a given tolerable metric limit is met the procedure stops. Analytical expressions for the average number of tested candidates and the achieved performance are derived. Critical metric values, as generalisation of the ‘critical’ PAR value ξ = log(D), where D is the number of carriers, are defined. The theoretical statements are covered by means of numerical simulations using either PAR or cubic metric as desired signal parameter. Copyright © 2010 John Wiley & Sons, Ltd.
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