HSDPA (High Speed Downlink Packet Access) Mobile Broadband
Key Data:
Downlink frame size
2ms TTI (3 slots)
Channel feedback
Channel quality reported at 2ms rate or 500Hz
Data user multiplexing
TDM/CDM
Adaptive modulation and coding
QPSK and 16 QAM Mandatory
Hybrid-ARQ
Chase or Incremental Redundancy (IR)
Spreading factor
SF=16 using UTRA OVSF Channelisation codes
Control channel approach
Dedicated channel pointing to shared channel
