Title :
Performance of link adaptation algorithms and reconfigurable antennas for MIMO-OFDM wireless systems
Author :
Sworo, George D. ; Kam, Moshe ; Dandekar, Kapil R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Drexel Univ., Philadelphia, PA, USA
Abstract :
Data rates and channel capacity in MIMO-OFDM wireless systems can be improved through the use of Adaptive Modulation and Coding (AMC) and pattern reconfigurable antennas. In this paper, we propose a Spatially Adaptive Modulation and Coding (SAMC) scheme that operates in two stages. In the first, it searches for the optimal antenna configuration. Then, the technique applies AMC based on the post-processing Signal-to-Noise Ratio (ppSNR) yielded by the selected configuration and additional system constraints. The AMC algorithm uses fixed link tables defined by ppSNR regions for supportable spectral efficiencies. The performance of the proposed scheme in a 2×2 MIMO-OFDM wireless system in an indoor environment is evaluated.
Keywords :
MIMO communication; OFDM modulation; adaptive modulation; antennas; encoding; telecommunication links; MIMO-OFDM wireless system; SAMC scheme; adaptive coding; adaptive modulation; channel capacity; data rate; indoor environment; link adaptation algorithms; optimal antenna configuration; pattern reconfigurable antenna; post-processing signal-to-noise ratio; ppSNR regions; Adaptation models; Antennas; Bit error rate; Encoding; Modulation; Signal to noise ratio; Wireless communication;
Conference_Titel :
Information Sciences and Systems (CISS), 2012 46th Annual Conference on
Conference_Location :
Princeton, NJ
Print_ISBN :
978-1-4673-3139-5
Electronic_ISBN :
978-1-4673-3138-8
DOI :
10.1109/CISS.2012.6310795
