Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low PMEPR OFDM radar waveform design using the iterative least squares
  algorithm   This letter considers waveform design of orthogonal frequency division
multiplexing (OFDM) signal for radar applications, and aims at mitigating the
envelope fluctuation in OFDM. A novel method is proposed to reduce the
peak-to-mean envelope power ratio (PMEPR), which is commonly used to evaluate
the fluctuation. The proposed method is based on the tone reservation approach,
in which some bits or subcarriers of OFDM are allocated for decreasing PMEPR.
We introduce the coefficient of variation of envelopes (CVE) as the cost
function for waveform optimization, and develop an iterative least squares
algorithm. Minimizing CVE leads to distinct PMEPR reduction, and it is
guaranteed that the cost function monotonically decreases by applying the
iterative algorithm. Simulations demonstrate that the envelope is significantly
smoothed by the proposed method.

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The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
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The categories of this paper are: nlin
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
18
The categories of this paper are: econ