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Multiple Beamforming with Constellation Precoding: Diversity Analysis and Sphere Decoding
 

Summary: Multiple Beamforming with Constellation Precoding:
Diversity Analysis and Sphere Decoding
Hong Ju Park, Boyu Li, and Ender Ayanoglu
Center for Pervasive Communications and Computing
Department of Electrical Engineering and Computer Science
University of California, Irvine
Email: hjpark@uci.edu, boyul@uci.edu, ayanoglu@uci.edu
Abstract--Multi-Input Multi-Output (MIMO) wireless com-
munication systems commonly employ beamforming techniques
with Singular Value Decomposition (SVD). In such systems,
if no channel encoding is employed, the full diversity order
provided by the channel is achieved when a single symbol is
transmitted over multiple channels; however, this property is
lost whenever multiple symbols are simultaneously transmitted.
The full diversity order can be restored when channel coding
is added to such a system. For example, when Bit-Interleaved
Coded Modulation (BICM) is combined with this technique, the
full diversity order of NM in an M N MIMO channel,
transmitting S parallel streams is possible; provided SRc 1
where RC is the BICM convolutional code rate. In this paper,

  

Source: Ayanoglu, Ender - Department of Electrical and Computer Engineering, University of California, Irvine

 

Collections: Engineering