Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Uplink Transceiver Design and Optimization for Transmissive RMS
  Multi-Antenna Systems   In this paper, a novel uplink communication for the transmissive
reconfigurable metasurface (RMS) multi-antenna system with orthogonal frequency
division multiple access (OFDMA) is investigated. Specifically, a transmissive
RMS-based receiver equipped with a single receiving antenna is first proposed,
and a far-near field channel model based on planar waves and spherical waves is
given. Then, in order to maximize the system sum-rate of uplink communications,
we formulate a joint optimization problem over subcarrier allocation, power
allocation and RMS transmissive coefficient design. Due to the coupling of
optimization variables, the optimization problem is non-convex, so it is
challenging to solve it directly. In order to tackle this problem, the
alternating optimization (AO) algorithm is used to decouple the optimization
variables and divide the problem into two sub-problems to solve. First, the
problem of joint subcarrier allocation and power allocation is solved via the
Lagrangian dual decomposition method. Then, the RMS transmissive coefficient
design can be obtained by applying difference-of-convex (DC) programming,
successive convex approximation (SCA) and penalty function methods. Finally,
the two sub-problems are iterated alternately until convergence is achieved.
Numerical simulation results verify that the proposed algorithm has good
convergence performance and can improve system sum-rate compared with other
benchmark algorithms.

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The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat
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The categories of this paper are: q-fin
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ph
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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: nucl-th
6
The categories of this paper are: astro-ph