DESIGN OF NOMA EMPLOYING F-DOMAIN EQUALIZATION AND RECURSIVE DETECTION FOR NOISY CHANNELS

Due to the limitations on the available bandwidth, it is becoming difficult to manage the available bandwidth and share them among different users. Hence it becomes mandatory to design multiplexing techniques which would utilize the available bandwidth effectively. The most common multiplexing techniques used thus far have been frequency division multiplexing (FDM), time division multiplexing (TDM) and orthogonal frequency division multiplexing (OFDM). Off late, OFDM has been the go to multiplexing technique and has been used in several wireless technologies. Still, the search for more efficient multiplexing techniques has been an ongoing process. One of the strongest contenders for the same which could cater to the needs of future generation communication systems is non-orthogonal multiple access (NOMA). The proposed work presents a non-orthogonal multiple access technique for wireless communications under noisy channel conditions employing frequency domain equalization and recursive detection. The results indicate that the proposed system attains much better Quality of Service (QoS) due to the fact that the BER reduces to a much lesser value thereby rendering more reliability to the proposed system.It also has higher noise immunity since the noise doesn’t override the signal even at lesser values of SNR.