Channel Estimation Based Sinr Degradation Improvement in Mimo Ofdm Systems
نویسنده
چکیده
Orthogonal frequency division multiplexing (OFDM) technique is becoming the most frequently used technique for wireless systems such as Long Term Evolution (LTE) and enhanced standards are contemplating its combination with multiple input multiple output (MIMO).These systems suffer from inter-channel interference (ICI) introduced by phase noise and channel estimation errors.ICI is also caused due to Quadrature phase shift in the signals which leads to the loss of information. It degrades the Signal to Interference Noise Ratio (SINR) which in-turn decreases the system performance. In this paper we will derive an analytical expression for SINR degradation. The Quadrature phase change can be corrected using channel estimation and Partial Phase Noise Compensation
منابع مشابه
Performance Improvement of Mimo Ofdm Systems through Channel Estimation
A brief overview of MIMO-OFDM system design has been discussed and its key techniques are introduced. It also focuses on OFDM-based air interface, spatial channel modelling, transceiver design, channel estimation and minimizing the BER ratio by modifying the Maximum Likelihood function through channel estimation.
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