arXiv 2002.067452020-02-17cs.ITmath.IT

OFDMA系统中用于动态频谱分配的低PMEPR前导序列设计

Low-PMEPR Preamble Sequence Design for Dynamic Spectrum Allocation in OFDMA Systems

Yajing Zhou, Zhengchun Zhou, Zilong Liu, Pingzhi Fan, Yong Liang Guan

备注：: Accepted to be published in IEEE Transactions on Communications (Feb 2020)

摘要：

具有动态频谱分配（DSA）的正交频分多址（OFDMA）能够提供宽范围的数据率要求。该文在DSA的背景下，研究了具有低峰值平均包络功率比（PMEPR）特性的OFDMA系统中前导序列的设计。我们提出了一个系统的前导码序列设计，这可能会导致非连续频谱分配的低PMEPR。借助Golay-Davis-Jedwab（GDJ）序列，提出了两类前导序列。我们证明了他们的PMEPR的上限为4的任何DSA超过一块四个连续的资源块。

英文摘要：

Orthogonal Frequency Division Multiple Access (OFDMA) with Dynamic spectrum allocation (DSA) is able to provide a wide range of data rate requirements. This paper is focused on the design of preamble sequences in OFDMA systems with low peak-to-mean envelope power ratio (PMEPR) property in the context of DSA. We propose a systematic preamble sequence design which gives rise to low PMEPR for possibly non-contiguous spectrum allocations. With the aid of Golay-Davis-Jedwab (GDJ) sequences, two classes of preamble sequences are presented. We prove that their PMEPRs are upper bounded by 4 for any DSA over a chunk of four contiguous resource blocks.

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