The major evolution of UMTS (Universal Mobile Telecommunications System) in recent years is the High Speed Downlink Packet Access (HSDPA)which provides data rates up to 10Mbps. The implementation of HSDPA includes multicodes transmission in joint application with Adaptive Modulation and Coding (AMC) as well as Hybrid Automatic Repeat reQuest (HARQ). This thesis deals with the implementation of the HSDPA simulator in FDD (Frequency Division Duplex) mode according to 3GPP technical specifications. It also aims to study the HARQ algorithms for HSDPA. The performance of AMC is significantly degraded when higher order modulation (16-QAM) is used in a multipath environnement. Moreover, the HSDPA simulator requires a very long time of computation to provide good performance in multipath channel. In order to solve this problem, we have introduced a simplified simulator which exploits the performance of HSDPA over gaussien channel as look-up tables to compute the block error rate in multipath channel.

2006telb0024-Et-Tolba (1).pdf

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