J.S. Harsini

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Adaptive modulation and coding (AMC) and automatic repeat request (ARQ) protocol are powerful techniques for improving the spectral efficiency (SE) or the error performance in wireless packet networks over fading channels. In this paper, we first consider a discrete-rate M-QAM based AMC scheme and propose a variable power transmission scheme for(More)
Adaptive modulation and coding (AMC) is a powerful technique for improving the spectral efficiency or the error performance in wireless packet networks over fading channels. In this article, using a fixed number of modulation and coding modes we propose a variable power transmission scheme for transmission of packets over block-fading wireless channels. We(More)
In this paper, we consider efficient communication over land mobile satellite channels (LMSC) based on a cooperative automatic repeat request (ARQ) strategy. Specifically, we propose a cross-layer design which combines adaptive modulation and coding (AMC) at the physical layer with cooperative truncated ARQ protocol at the data link layer. We first derive a(More)
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