Title :
Fixed WiMAX Downlink Spectral Efficiency and Throughput Measurements under Channel Impairments
Author :
Shah, Pranesh ; Mondal, Kalyan
Author_Institution :
Gildart Haase Sch. of Comput. Sci. & Eng., Fairleigh Dickinson Univ., Teaneck, NJ, USA
fDate :
March 31 2009-April 2 2009
Abstract :
This paper presents WiMax system performance results especially spectral efficiency and throughput under severe multi-path fading and noisy channel conditions. These results are obtained by simulating enhanced WiMax physical layer models with and without transmit diversity. The system behavior is shown to be marginal for modulations beyond 16-QAM under worse conditions necessitating the mandatory use of adaptive modulation and coding (AMC) scheme.
Keywords :
WiMax; adaptive codes; adaptive modulation; fading channels; modulation coding; multipath channels; quadrature amplitude modulation; 16-QAM; WiMax downlink spectral efficiency; adaptive modulation-coding scheme; channel impairments; multipath fading channel; throughput measurements; transmit diversity; AWGN; Additive white noise; Downlink; Fading; Gaussian noise; Mathematical model; OFDM; Physical layer; Throughput; WiMAX;
Conference_Titel :
Computer Science and Information Engineering, 2009 WRI World Congress on
Conference_Location :
Los Angeles, CA
Print_ISBN :
978-0-7695-3507-4
DOI :
10.1109/CSIE.2009.74
