Link Adaptation for WCDMA and HSDPA

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Pls find material about Link Adaptation for WCDMA and HSDPA. This is a Research Article

The wideband code division multiple access (WCDMA) system with high-speed downlink packet access (HSDPA) is an important next-generation
wireless system. By adopting adaptive modulation, efficient scheduling, and hybrid automatic repeat request technologies, it can support data rates of up
to 10 Mb/s in the mobile cellular environment. Among these techniques, the scheduling algorithm plays a key role in realizing the HSDPA concept. A
good scheduling algorithm should consider all the important factors, including channel impact, delay issues, and fairness. In this paper, a fairness index is
adopted to examine the fairness performance of current link-adaptation-based scheduling algorithms, including the maximum carrier-to-interference (C/I),
round-robin, proportional fair, and exponential rule schedulers.

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