Title :
Channel Quality Indication (CQI) Application in HSDPA Simulation
Author :
Hou, Qun ; Huang, Dexiu
Author_Institution :
Dept. of Opt. & Elec. Eng., HUST, Wuhan
Abstract :
ICQI is the key indicator for HSDPA downlink channel quality. UE reports CQI and HARQ-ACK feedback info to Node-B through uplink channel HS-DPCCH. UE estimates the CQI value through an iterative algorithm taking the measurements of HS-PDSCHSIR and CPICH_Ec/No into account. Besides this the UE probes with varying parameter values for TB size, modulation type, a reference power setting for HS-PDSCH and an possible power adjustment value to obtain a CQI value. This paper gives the methods how to determine SIR of PDSCH channel, received HS-PDSCH power, the Measurement Power Offset etc. This is very important for every HSDPA sub-frame in HSDPA simulations.
Keywords :
automatic repeat request; iterative methods; packet radio networks; radio links; wireless channels; CQI; HARQ-ACK feedback; HSDPA simulation; channel quality indication; high speed downlink packet access; iterative algorithm; uplink channel HS-DPCCH; Cyclic redundancy check; Decoding; Downlink; High speed optical techniques; Iterative algorithms; Multiaccess communication; Optical feedback; Power measurement; Probes; Protection;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2007. WiCom 2007. International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-1311-9
DOI :
10.1109/WICOM.2007.306
