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

fYear

2011

fDate

5-9 June 2011

Firstpage

1

Lastpage

6

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications (ICC), 2011 IEEE International Conference on

Conference_Location

Kyoto

ISSN

1550-3607

Print_ISBN

978-1-61284-232-5

Electronic_ISBN

1550-3607

Type

conf

DOI

10.1109/icc.2011.5962908

Filename

5962908