A Review in Multiple Modulation Techniques 16 and 64 QAM MIMO-OFDM BPSK-QPSK-PSK System

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Provided by: International Journal of Electrical, Electronics and Computer Engineering (IJEECE)
Topic: Mobility
Format: PDF
In this paper, the authors present the review of wireless communication systems suffer from fading and signal attenuation due to the mobility factor associated with it. OFDM (Orthogonal Frequency Division Multiplexing) is a multicarrier technique that offers high spectral efficiency. MIMO (Multiple Input Multiple Output) configuration provides enhanced capacity with the same transmit power. OFDM combined with MIMO offers increased diversity gain and system capacity in time variant and frequency variant channels. MIMO- OFDM configuration is found to perform better against multi-path fading and the varying channel conditions, than the conventional technologies.
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