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Relay Selection and Max-Min Resource Allocation for Multi-Source OFDM-Based Mesh Networks
 

Summary: Relay Selection and Max-Min Resource Allocation
for Multi-Source OFDM-Based Mesh Networks
Kianoush Hosseini and Raviraj Adve
The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto
10 King's College Road, Toronto, ON M5S 3G4, Canada
Email: {kianoush, rsadve}@comm.utoronto.ca
Abstract--We consider a multi-source mesh network of static
access points wherein sources use decode-and-forward to cooper-
ate with each other. All transmissions use orthogonal frequency
division multiplexing (OFDM). Our objective is to maximize the
minimum achievable rate across all flows. We find a tight upper
bound on the performance of the subcarrier-based cooperation
and show that selecting a single relay for each subcarrier is
optimal for almost all subcarriers. The solution to the related
optimization problem simultaneously solves the relay, power, and
subcarrier assignment problems. Second, unlike previous works,
we also consider relay selection for the entire OFDM block.
This addresses the fact that, in addition to the synchronization
problems caused, it is likely impractical for a relay to only
decode a subset of subcarriers. We propose three selection-based

  

Source: Adve, Raviraj - Department of Electrical and Computer Engineering, University of Toronto

 

Collections: Engineering