Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A High-Accuracy Adaptive Beam Training Algorithm for MmWave
  Communication   In millimeter wave communications, beam training is an effective way to
achieve beam alignment. Traditional beam training method allocates training
resources equally to each beam in the pre-designed beam training codebook. The
performance of this method is far from satisfactory, because different beams
have different beamforming gain, and thus some beams are relatively more
difficult to be distinguished from the optimal beam than the others. In this
paper, we pro- pose a new beam training algorithm which adaptively allocates
training resources to each beam. Specifically, the proposed algorithm allocates
more training symbols to the beams with relatively higher beamforming gain,
while uses less resources to distinguish the beams with relatively lower
beamforming gain. Through theoretical analysis and numerical simulations, we
show that in practical situations the proposed adaptive algorithm
asymptotically outperforms the traditional method in terms of beam training
accuracy. Moreover, simulations also show that this relative performance
behavior holds in non-asymptotic regime.

20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
16
The categories of this paper are: stat
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
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The categories of this paper are: econ
28
The categories of this paper are: alg-geom