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Published in:
2017 | OriginalPaper | Chapter
Performance Analysis of Link Adaptation with MIMO and Varying Channel Estimation Schemes
Authors : Maryam Imran Sheik Mamode, Tulsi Pawan Fowdur
Published in: Emerging Trends in Electrical, Electronic and Communications Engineering
Publisher: Springer International Publishing
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Abstract
The 3GPP (Third Generation Partnership Project) introduced Long Term Evolution (LTE), which is a 4G wireless technology used for broadband, derived from the 2G and 3G data technologies. LTE provides augmented capacity and speed. Among the different methods used for enhancing the performance of an LTE system is link adaptation, whereby the modulation, coding and other signal and protocol parameters are matched to the radio link conditions, leading to an improvement in transmission rates and/or bit error rates. This paper performs a comparative analysis of Link Adaptation with transmit diversity using 2 × 2 Multiple Input Multiple Output (MIMO) as well as different Channel Estimation Techniques. Link Adaptation is performed at the modulation level where a particular modulation index is selected based on the Signal-to-Interference Noise Ratio (SINR) value to obtain the maximum possible data rate for a target BER. Results show that a better performance is achieved using slot average algorithm.