Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low Complexity Sphere Decoding for Spatial Multiplexing MIMO   In this paper we present a novel method for decoding multiple input -
multiple output (MIMO) transmission, which combines sphere decoding (SD) and
zero forcing (ZF) techniques to provide near optimal low complexity and high
performance constant time modified sphere decoding algorithm. This algorithm
was designed especially for large number of transmit antennas, and allows
efficient implementation in hardware. We do this by limiting the number of
overall SD iterations. Moreover, we make sure that matrices with high condition
number are more likely to undergo SD.

26
The categories of this paper are: bayes-an
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The categories of this paper are: eess
27
The categories of this paper are: comp-gas
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
33
The categories of this paper are: plasm-ph
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The categories of this paper are: hep-th
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The categories of this paper are: q-alg
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The categories of this paper are: solv-int
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The categories of this paper are: hep-lat
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The categories of this paper are: econ
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin