In this research, we suggest a transceiver construction that minimises interference between transmitting and receiving subcarriers. Its signal to interference and noise ratio (SINR) performance is evaluated using both analysis and simulation, and it is then put into a recently proposed cooperation method for Orthogonal Frequency Division Multiple Access (OFDMA) systems to be tested under realistic settings. The traditional Discrete Fourier Transform (DFT)-based approach will cause energy leakage in multipath channels with non-sample-spaced time delays. The improved DFT-based channel estimating approach uses the symmetric property to extend the LS estimate in frequency domain, calculates the leakage energy's changing rate, and determines viable paths based on the changing rate. It's worth noting that the proposed solution allows the multicast scheme to reach larger capacity than the unicast or mixed scenarios. Higher system capabilities can be reached as more multicast users quit.
Author(S) Details
P. Chiranjeevi
Department of ECE, Kakatiya Institute of Technology and Science, Warangal, India.
N. Bhargavi
Department of ECE, Kakatiya Institute of Technology and Science, Warangal, India.
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