Abstract

The performance of rate adaptive M-ary quadra- ture amplitude modulation (M-QAM) and adaptive trellis-coded M-QAM in large open office indoor wireless environments is studied in this paper. An appropriate composite fading/shadowing channel model termed the Joint Fading and Two-path Shadowing (JFTS) model is adopted for the indoor wireless environment. Mathematically tractable expressions for the spectral efficiency and average bit error rate (ABER) of adaptive coded and uncoded M-QAM over the JFTS channel are derived. Analytical results demonstrate the performance of adaptive M-QAM over different JFTS channel configurations, and simulation results corroborate the derived analytical ABER expressions.

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