Smart versus dumb antennas - Capacities and FEC performance

被引：33

作者：

Bauch, G ^{[1
]}

Hagenauer, J ^{[1
]}

机构：

[1] Tech Univ Munich, Inst Commun Engn, D-80290 Munich, Germany

来源：

IEEE COMMUNICATIONS LETTERS | 2002年 / 6卷 / 02期

关键词：

FEC coding; smart antennas; space-time codes; transmit diversity;

D O I：

10.1109/4234.984690

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

We compare two approaches to use multiple transmit antennas in an FEC coded wireless system: Smart antennas use an antenna array to direct a beam in the direction of the dominant transmission path in order to obtain an antenna gain. Another approach is to use multiple transmit antennas for diversity using space-time block codes. Since no knowledge of the channel is required at the transmitter we denote this approach as dumb antennas. Using equivalent single-input channel models we compare smart and dumb antennas in terms of BER performance and channel capacity and discuss under which conditions it is preferable to use multiple transmit antennas for transmit diversity or for beamforming.

引用

页码：55 / 57

页数：3

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