Design of Space-Time Block Coded Unique Word OFDM Systems

被引：0
|
作者：
Cheema, Sher Ali [1 ]
Zhang, Jianshu [1 ]
Huemer, Mario [2 ]
Haardt, Martin [1 ]
机构：
[1] Ilmenau Univ Technol, Commun Res Lab, Ilmenau, Germany
[2] Johannes Kepler Univ Linz, Inst Signal Proc, Linz, Austria
来源：
2017 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP) | 2017年
关键词：
Orthogonal Frequency Division Multiplexing (OFDM); Cyclic Prefix (CP); Unique Word (UW); Space-Time Block Codes (STBCs); Multiple-Input Multiple-Output (MIMO); SELECTIVE FADING CHANNELS;
D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
In this paper we develop space-time block codes for unique word -orthogonal frequency division multiplexing (UW-OFDM) systems to fully exploit the diversity gain when the channel state information is not available at the transmitter. To this end, we propose two novel space-time block codes (STBCs) for UW-OFDM systems, namely a frequency domain space-time block code and a time-reversal space-time code (TR-STC). The former one is an extension of the traditional spacefrequency block codes (SFBCs) for CP-OFDM systems to UW-OFDM systems while the latter one makes use of the frame structure of the UW-OFDM symbols and has a low complexity decoder. Simulation results show that both of the proposed space-time block codes achieve a significant gain compared to the SFBC based CP-OFDM. Moreover, the frequency domain STBC yields a slightly better performance as compared to the TR-STC but has a higher computational complexity.
引用
收藏
页码：3341 / 3345
页数：5
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