Title :
Optimal Resource Allocation for Type-II HARQ Based OFDMA Ad Hoc Networks under Individual Rate and PER Constraints
Author :
Ksairi, Nassar ; Ciblat, Philippe ; Le Martret, Christophe J.
Author_Institution :
Telecom ParisTech, Paris, France
Abstract :
We address the problem of multiuser power and bandwidth allocation for Orthogonal Frequency Division Multiple Access (OFDMA) networks employing a Type-II Hybrid Automatic Repeat reQuest (HARQ) mechanism, practical Coding and Modulation Schemes (MCSs) and Bit Interleaved Coded Modulation (BICM). The problem is formulated as minimizing the sum power required to satisfy a goodput constraint for each link while its post-HARQ Packet Error Rate (PER) does not exceed a certain threshold. Assuming statistical Channel State Information (CSI), we propose a computationally-efficient algorithm to compute the corresponding optimal resource allocation. We finally provide a practical selection of the MCSs that significantly boosts the performance of the proposed resource allocation algorithm.
Keywords :
OFDM modulation; ad hoc networks; automatic repeat request; bandwidth allocation; frequency division multiple access; modulation coding; resource allocation; BICM; MCS; OFDMA ad hoc networks; bandwidth allocation; bit-interleaved coded modulation; coding-modulation scheme; goodput constraint; multiuser power allocation; optimal resource allocation; orthogonal frequency division multiple access networks; post-HARQ packet error rate; statistical CSI; statistical channel state information; sum power minimization; type-II HARQ mechanism; type-II hybrid automatic repeat request mechanism; Ad hoc networks; Bandwidth; Encoding; Minimization; OFDM; Resource management; Wireless communication;
Conference_Titel :
Vehicular Technology Conference (VTC Spring), 2014 IEEE 79th
Conference_Location :
Seoul
DOI :
10.1109/VTCSpring.2014.7023028