Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Backhaul-Constrained Multi-Cell Cooperation Leveraging Sparsity and
  Spectral Clustering   Multi-cell cooperative processing with limited backhaul traffic is studied
for cellular uplinks. Aiming at reduced backhaul overhead, a
sparsity-regularized multi-cell receive-filter design problem is formulated.
Both unstructured distributed cooperation as well as clustered cooperation, in
which base station groups are formed for tight cooperation, are considered.
Dynamic clustered cooperation, where the sparse equalizer and the cooperation
clusters are jointly determined, is solved via alternating minimization based
on spectral clustering and group-sparse regression. Furthermore, decentralized
implementations of both unstructured and clustered cooperation schemes are
developed for scalability, robustness and computational efficiency. Extensive
numerical tests verify the efficacy of the proposed methods.

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The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin