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Publication Type : Conference Paper
Publisher : 2019 International Conference on Wireless Communications Signal Processing and Networking (WiSPNET),
Source : 2019 International Conference on Wireless Communications Signal Processing and Networking (WiSPNET), IEEE, Chennai, India (2019)
Campus : Amritapuri
School : School of Engineering
Department : Electronics and Communication
Year : 2019
Abstract : MIMO-OFDM is used to increase the capacity in wireless communication in the present scenario. For coherent detection, the performance of a MIMO-OFDM system greatly depends on the channel estimation. In this paper, we made an investigation on the performance of channel estimation based on superimposed pilots and null subcarriers. This leads to two main advantages, cancel the mutual interference between OFDM symbols and the second is accurate channel estimation. The channel estimation is performed in a Rayleigh fading channel using Least Minimum Mean Square Error (LMMSE) algorithm. Results show that channel estimation based on null carriers and superimposed pilot insertion gives better performance than conventional MIMO-OFDM systems.
Cite this Research Publication : Anu Thomas and Aswathy K. Nair, “Null-subcarrier Based Channel Estimation and Mutual Interference Reduction in MIMO OFDM Systems”, in 2019 International Conference on Wireless Communications Signal Processing and Networking (WiSPNET), Chennai, India, 2019.