Generalised Link-Layer Adaptation With Higher-Layer Criteria for Energy-Constrained and Energy-Sufficient Data Terminals
It has long been recognised that a wireless communication system can be more efficient if link-layer parameters such as modulation order are adapted to the channel conditions. The most common optimising criterion is spectral efficiency (bps/Hertz) subject to very low bit-error constraint. But this criterion is not appropriate for practical communication networks fitted with strong data-packet error detection and a mechanism for selective packet re-transmission. In such scenario, packet-oriented criterion for link adaptation, such as the "Goodput", seems more appropriate.