Link Adaptation is a radio resource management
technique that assesses the channel conditions and
selects a transport mode, from a set of possible options,
which is optimised for these conditions according to a
predefined criterion. The optimum transport mode is
commonly determined so as to maximise the throughput.
Although this approach may be appropriate for best-effort
services, its suitability for multimedia services, usually
characterised by tight delay and error performance constraints,
has been questioned. As a result, a number of
alternative algorithms have been proposed in the literature.
In this context, this paper presents and evaluates in a
dynamic radio environment several Link Adaptation algorithms
designed to enhance the provision of delay- and
error-sensitive multimedia packet-data services over wireless
systems. The obtained results demonstrate that
significant improvements in terms of throughput, transmission
delay, error performance and operation of Link
Adaptation itself can be obtained with the proposed
CitationLópez, M.; Gozalvez, J. Link adaptation algorithms for improved delivery of delay- and error-sensitive packet-data services over wireless networks. "Wireless networks", Abril 2010, vol. 16, núm. 3, p. 593-606.
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