Adaptive Modulation and Power Allocation Technique for LDPC-Coded MIMO-OFDMA Cellular Systems

Kwang-Soon KIM  

Publication
IEICE TRANSACTIONS on Communications   Vol.E88-B   No.11   pp.4410-4412
Publication Date: 2005/11/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.11.4410
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Terrestrial Radio Communications
Keyword: 
adaptive transmission,  MIMO,  OFDMA,  

Full Text: PDF>>
Buy this Article




Summary: 
An adaptive transmission scheme, in which the work in [3] is extended to multiuser environment, is proposed for LDPC-coded MIMO-OFDMA cellular systems that employ FDD by considering active user selection and sub-channel power allocation. The performance of the proposed scheme is obtained from simulation and compared with that of the conventional scheme using mean SNR only. It is shown that the proposed scheme can provide up to 5.5 dB gain over the conventional scheme at the expense of only 6 more bits in feedback information.