Performance Enhancements of MIMO-OFDM System Using Various Adaptive Receiver Structures

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Provided by: International Journal of Computer and Information Technology (IJCIT)
Topic: Networking
Format: PDF
In wireless communications, multi-channel transmission is utilized to obtain high capacity and better throughput efficiency. Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) is considered as spectrally efficient system to achieve high throughput communications. This paper investigates the performance enhancement of MIMO-OFDM system using NLMS, variable step-size NLMS and RLS adaptive receivers. The performances of using fixed step-sizes were investigated and an optimum value was chosen, based on a trade-off between the convergence speed and the steady state noise floor for NLMS algorithm and was compared with the variable step-size NLMS.
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