Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interference Cancellation and Iterative Detection for Orthogonal Time
  Frequency Space Modulation   The recently proposed orthogonal time frequency space (OTFS) modulation
technique was shown to provide significant error performance advantages over
orthogonal frequency division multiplexing (OFDM) in Doppler channels. In this
paper, we derive the explicit input-output relation describing OTFS modulation
and demodulation (mod/demod) for delay-Doppler channels. We analyze the
interferences and develop a novel low-complexity yet efficient message passing
(MP) algorithm for joint interference cancellation (IC) and symbol detection.
The proposed MP algorithm can effectively compensate for a wide range of
channel Doppler spreads.

17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg