Subcarrier Allocation for OFDM With Index Modulation

被引：23

作者：

Ma, Qianli ^{[1
]}

Xiao, Yue ^{[1
,2
]}

Dan, Lilin ^{[1
]}

Yang, Ping ^{[1
]}

Peng, Lan ^{[1
]}

Li, Shaoqian ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Natl Key Lab Sci & Technol Commun, Chengdu 611731, Peoples R China

[2] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Jiangsu, Peoples R China

来源：

IEEE COMMUNICATIONS LETTERS | 2016年 / 20卷 / 07期

关键词：

Index modulation; subcarrier allocation; orthogonal frequency division multiplexing;

D O I：

10.1109/LCOMM.2016.2560171

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

A subcarrier allocation (SA) scheme was demonstrated to provide useful performance improvements for orthogonal frequency division multiplexing (OFDM) systems. Hence, in this letter, we extend its employment to OFDM with index modulation (OFDM-IM) systems. For the sake of improving the bit error rate (BER) performance, an optimal SA algorithm is first proposed by maximizing the average minimum Euclidean distance based on exhaustive search. Furthermore, for striking a better tradeoff between the complexity imposed and the BER performance attained, we propose a simplified SA algorithm by sorting the channel gains of the subcarriers. Simulation results show that with the aid of SA algorithms, significant performance gains can be achieved over conventional OFDM-IM systems.

引用

页码：1469 / 1472

页数：4

共 13 条

[1] Subcarrier-Index Modulation OFDM [J].