Diversity-Achieving Quadrature Space-Frequency Index Modulation

被引：1

作者：

Xue, Yilei ^{[1
]}

Wang, Lei ^{[1
]}

Shao, Yanzhang ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Informat & Commun Engn, Xian 710049, Peoples R China

来源：

IEEE COMMUNICATIONS LETTERS | 2021年 / 25卷 / 07期

基金：

美国国家科学基金会;

关键词：

Frequency-domain analysis; Modulation; Diversity reception; OFDM; Transmitting antennas; Indexes; Rician channels; Index modulation; space-frequency code; quadrature spatial modulation; precoding matrix; transmit diversity; OFDM;

D O I：

10.1109/LCOMM.2021.3074410

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

Quadrature space-frequency index modulation (QSF-IM) is a recently developed space-frequency transmission scheme which generalizes the idea of quadrature spatial modulation into both spatial and frequency domains. However, QSF-IM lacks of transmit diversity. In this letter, by combining QSF-IM and space-frequency code designing, a novel diversity-achieving QSF-IM (DA-QSFIM) scheme which can achieve the second-order transmit diversity is proposed. In the proposed scheme, the real and imaginary parts of a symbol vector are respectively multiplied by two different precoding matrices and then they are placed into space-frequency resource block in diagonal or anti-diagonal form for transmission. Theoretical performance analysis and simulation results are presented to validate the superiority of DA-QSFIM over other existing schemes in terms of bit error rate (BER) performance under both Rayleigh and Rician channels.

引用

页码：2295 / 2299

页数：5

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