系统仿真了HSDPA中的HARQ系统，对HARQ系统的吞吐量，重传次数做了分析描述-Simulation of HSDPA in the HARQ system, the throughput of the HARQ system, the number of retransmission made analyzed and described

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