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Wireless Personal Communications
Erschienen in: Wireless Personal Communications 4/2015

01.06.2015

An Adaptive Threshold Feedback Compression Scheme Based on Channel Quality Indicator (CQI) in Long Term Evolution (LTE) System

verfasst von: Muntadher Qasim Abdulhasan, Mustafa Ismael Salman, Chee Kyun Ng, Nor Kamariah Noordin, Shaiful Jahari Hashim, Fazirulhisham Hashim

Erschienen in: Wireless Personal Communications | Ausgabe 4/2015

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Abstract

Channel quality indicator (CQI) feedback in long-term evolution (LTE) system is an essential technique in describing the instantaneous channel state information. The CQI calculations highly depend on the accuracy of the channel estimation process in order to assign appropriate modulation and coding scheme. However, one of the critical issues affecting the LTE system performance is obtaining the CQI for each transmission period which will inevitably cost many resources. Therefore, an appropriate method for reducing CQI feedback overhead along with accurate channel estimation technique is required to manage the allocated resources and obtains significant improvements in system performance. In this paper, an adaptive threshold feedback compression scheme based on CQI scheme is proposed to obtain better system performance in terms of system throughput and error rate in LTE system. This proposed adaptive scheme dynamically adapts its threshold level to the signal to noise ratio variations, thus increasing the throughput and reducing the CQI feedback overhead. Results show that the proposed CQI based adaptive threshold feedback compression scheme enhances the tradeoff between system throughput and block error rate.
Vorheriger Artikel Novel Compact Microstrip Stepped-Impedance Resonator Using Computational Approach and Application to Dual-Band Bandpass Filters
Nächster Artikel ORS-FA: An Opportunistic Relay Selection Scheme for Frame-Aggregated Environments

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Metadaten
Titel
An Adaptive Threshold Feedback Compression Scheme Based on Channel Quality Indicator (CQI) in Long Term Evolution (LTE) System
verfasst von
Muntadher Qasim Abdulhasan
Mustafa Ismael Salman
Chee Kyun Ng
Nor Kamariah Noordin
Shaiful Jahari Hashim
Fazirulhisham Hashim
Publikationsdatum
01.06.2015
Verlag
Springer US
Erschienen in
Wireless Personal Communications / Ausgabe 4/2015
Print ISSN: 0929-6212
Elektronische ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-015-2350-1

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