RT Journal Article
T1 Fairness-Adaptive Goodput-Based Resource Allocation in OFDMA Downlink with ARQ
A1 Escudero Garzas, José Joaquín
A1 Devillers, Bertrand
A1 García-Armada, Ana
AB We present a cross-layer resource-allocation (RA) scheme for the downlink in orthogonal frequency-division multiple-access (OFDMA) systems with fairness control among the users, where the resources to be allocated are power, bits per symbol, and subchannels. The use of subchannels, which are defined as group of subcarriers, leads to reducing the complexity of the bandwidth allocation compared with the commonly adopted subcarrier allocation. A goodput-based optimization function, which is derived by combining automatic repeat request (ARQ) and physical (PHY)-layer parameters, is used to perform RA for applications that demand error-free transmissions. Two transmission strategies are considered, with and without concatenation of subchannels, for which two different RA methods are developed, respectively. We also propose an algorithm that improves the complexity associated to both concatenation and nonconcatenation schemes, without appreciable performance loss.
PB IEEE
SN 0018-9545
YR 2014
FD 2014-03
LK https://hdl.handle.net/10016/21087
UL https://hdl.handle.net/10016/21087
LA eng
NO The work was supported by the GRE3N Project under Grant TEC2011-29006-C03-03.
DS e-Archivo
RD 20 may. 2024