Title :
Multiuser Resource Allocation and LDPC-Based Adaptive Modulation and Coding for OFDMA Downlink
Author :
Mazzotti, Matteo ; Moretti, Simone ; Chiani, Marco
Author_Institution :
WiLAB, Univ. of Bologna, Bologna, Italy
Abstract :
In this work we describe an optimization technique for multiuser resource allocation and adaptive modulation and coding (AMC) in OFDMA radio downlink communications. In particular, we propose an innovative AMC solution, based on M-QAM modulation and LDPC codes, jointly working with the scheduler and capable to maximize the achieved throughput while guaranteeing a given set of BER/FER requirements. Simulation results are presented to validate the proposed approach and a comparison with more traditional schemes is provided.
Keywords :
OFDM modulation; error statistics; frequency division multiple access; optimisation; parity check codes; quadrature amplitude modulation; radiocommunication; resource allocation; AMC; BER-FER requirements; LDPC-based adaptive modulation and coding; M-QAM modulation; OFDMA radio downlink communications; multiuser resource allocation; optimization technique; Encoding; Fading; Modulation; OFDM; Physical layer; Resource management; Signal to noise ratio;
Conference_Titel :
Communications (ICC), 2011 IEEE International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-1-61284-232-5
Electronic_ISBN :
1550-3607
DOI :
10.1109/icc.2011.5962908
