Channel adaptive CQI reporting-schemes for HSDPA systems

HSDPA (High-Speed Downlink Packet Access) is an evolved UNITS packet scheme that delivers increased user peak data rates and quality of service. A key technique supporting HSDPA is adaptive modulation and coding (AMC), in which the modulation scheme and the coding rate are changed adaptively according to the downlink channel quality reported by the user equipment (UE). Therefore, the channel quality indication (CQI) reporting scheme is directly related to the accuracy of AMC and the performance of HSDPA. This letter proposes channel adaptive CQI reporting schemes in which UEs report the CQI value intelligently by using information about channel quality. With the proposed schemes, the battery capacity of UE can be conserved and the uplink interference can be lowered by filtering off redundant CQI reports or the transmission error rate can be lowered by fast CQI reports.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2006-06
Language
English
Citation

IEEE COMMUNICATIONS LETTERS, v.10, no.6, pp.459 - 461

ISSN
1089-7798
DOI
10.1109/LCOMM.2006.06021
URI
http://hdl.handle.net/10203/167
Appears in Collection
EE-Journal Papers(저널논문)
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