扩频OFDM系统中QPSK序列的设计

2019 12th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics (CISP-BMEI) Pub Date : 2019-10-01 DOI:10.1109/CISP-BMEI48845.2019.8965673

Guixin Xuan, Zhenyu Zhang, Chenrun Liu

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引用次数: 6

摘要

正交频分复用(OFDM)系统作为一种有效的数据速率和通信质量之间的折衷方法，可以为不同的通信需求提供灵活的选择。然而，传统的单通道BPSK序列在很大程度上限制了高速传输。为了获得更高的数据速率，本文提出了一种用于MSS-OFDM系统的QPSK序列设计方法。所提供的QPSK序列是在互补正交序列集的基础上构造的，该序列集同时映射到同相信道和正交信道。因此，以峰值平均功率比从3dB增长到6dB为代价，可以实现数据速率的两倍增长。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Design of QPSK Sequences for M-Ary Spread Spectrum OFDM Systems

As an efficient tradeoff method between data rate and communication quality, M-ary spread spectrum (MSS) orthogonal frequency division multiplexing (OFDM) system may provide a flexible choice for different communication requirements. However, conventional BPSK sequences with single channel mode limits high-speed transmission to a great extent. In order to obtain higher data rate, a design method of QPSK sequences for MSS-OFDM systems is proposed in this paper. The provided QPSK sequences are constructed on the basis of complementary orthogonal sequence set which is simultaneously mapped to both of in-phase channel and quadrature channel. As a result, the increase of twice data rate may be achieved at the cost of peak-to-average power ratio growth from 3dB to 6dB.

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2019 12th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics (CISP-BMEI)

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