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This paper introduces and investigates an enhanced link adaptation scheme considering adaptive sub-carrier modulation and compares this scheme with conventional ones by means of simulations. In order to apply the enhanced link adaptation, firstly adequate switching points with respect to throughput/delay optimisation need to be determined. The performance simulations show that the enhanced link adaptation applies a different switching behaviour, which together with an improved packet error ratio results in a better delay performance.
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual (Volume:2 )
Date of Conference: 22-25 April 2003