Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Power Control and Frequency Band Selection Policies for Underlay MIMO
  Cognitive Radio   We study power control and frequency band selection policies for multi-band
underlay MIMO cognitive radio with the objective of maximizing the rate of a
secondary user (SU) link while limiting the interference leakage towards
primary users (PUs) below a threshold. The goal of the SU in each policy is to
select one frequency band in each time slot and determine the transmit power.
To limit the interference towards PU in time-varying channels, we propose fixed
and dynamic transmit power control schemes which depend on PU traffic and the
temporal correlation of channels between the SU and the PU. We study the
performance of frequency band selection policies that use fixed or dynamic
power control. We show that dynamic frequency band selection policies, e.g.,
policies based on multi-armed bandit framework, wherein SU selects a different
frequency band in each slot, result in higher interference towards PU as
compared to the fixed band policy wherein SU stays on one band. We also provide
an expression for the gap between the rate achieved by SU under a clairvoyant
policy and the fixed band policy. It is observed that this gap reduces with
increased temporal correlation and with increased number of SU antennas.

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The categories of this paper are: cond-mat
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The categories of this paper are: econ
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The categories of this paper are: quant-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-th
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The categories of this paper are: nlin
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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
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The categories of this paper are: q-bio
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-fin
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The categories of this paper are: mtrl-th
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The categories of this paper are: stat
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The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org
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The categories of this paper are: q-alg