6533b828fe1ef96bd1288d82

RESEARCH PRODUCT

Effect of Channel-Quality Indicator Delay on HSDPA Performance

Jose F. MonserratDavid Martin-sacristanNarcis CardonaJavier Gozalvez

subject

EngineeringUser equipmentbusiness.industryCode division multiple accessComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSTelecommunications linkElectronic engineeringLink adaptationChannelizedMobile telephonybusinessCoding (social sciences)Scheduling (computing)

description

This paper evaluates the effect of the channel estimation inaccuracy on the performance of an HSDPA system. This study provides some results from system level simulations that have been conducted over a very complete dynamic simulator which models an HSDPA system full compliant with specifications. This emulator allows performing multi-user transmission and link adaptation with a limited modulation and coding scheme (MCS) selection based on the channel quality indicator (CQI) modes. Many factors such as the user equipment (UE) speed, the employed scheduling algorithm or the traffic load have been considered in the assessment. Moreover the intrinsic constraints of a WCDMA system like HSDPA have been also taken into account, i.e. the maximum number of channelization codes and the maximum transmitted power have been modelled jointly with a complete and dynamic interference characterization.

yearjournalcountryeditionlanguage
2007-04-012007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
https://doi.org/10.1109/vetecs.2007.175