Space frequency block codes and code division multiplexing in OFDM systems
Space frequency block codes and code division multiplexing in OFDM systems
复制标题
OFDM系统中的空频分组码和码分复用
DOI：
10.1109/glocom.2003.1258657
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
S. Kaiser
中科院分区：
文献类型：
--
作者：
S. Kaiser
本文研究了OFDM系统中不同的分集概念。它们是空频分组码（SFBC）和码分复用（CDM）。两者的性能，以及两者的组合，编码OFDM系统在瑞利衰落信道进行了比较。所应用的SFBC和CDM的共同之处在于它们没有速率损失，因此不会降低系统的带宽效率。在OFDM系统中，SFBC利用空间和频率分集，而CDM利用频率和时间分集。此外，由于信道编码的分集增益的影响被考虑在调查中。
The paper investigates different diversity concepts for OFDM systems. These are space frequency block codes (SFBCs) and code division multiplexing (CDM). The performances of both, and of combinations of both, are compared for coded OFDM systems in a Rayleigh fading channel. The applied SFBCs and CDM have in common that they have no rate loss and thus do not decrease the bandwidth efficiency of the system. While the SFBCs exploit space and frequency diversity, CDM exploits frequency and time diversity in OFDM systems. Additionally, the effects due to diversity gains by channel coding are taken into account in the investigations.