A Comprehensive QPSK-OFDM Approach for Signal Transmission

The primary issue in communication systems is the path loss of transmitted signals due to distortions and impairments imposed by communication channels. This can lead to signal error and significantly reduce signal quality and communication efficiency. The proposed approach offers a comprehensive solution by integrating Quadrature Phase Shift keying and Orthogonal Frequency Division Multiplexing to address these issues. The proposed methodology reshapes QPSK-modulated signals into 3-dimensional modulated symbols through channel estimation, accurately representing channel properties. Subsequently, the equalization mitigates channel distortion effects. The proposed methodology calculates mean square and root mean square errors associated with corresponding values on the signal-to-noise ratio, which describes the optimal signal transmission. The suggested methodology increases signal reliability and accuracy, which enhances quality and directly and positively impacts communication efficiency.