F-OFDM Scheme For Next Generation Wireless Networks

The future demand of increasing transmission rate and bandwidth efficiency is of prime concern in the modern wireless communication systems.The current research trends towards mobile broadband communications highly focused on mitigating the power spectral analysis and frequency localiz ation issues associated with Orthogonal Frequency Division Multiplexing namely OFDM signals,which is also a major requirement,for the fifth generation(5G)communication networks.The data bits are transmitted at a rate higher than the conventional metho ds by using filter with high order modulation and the outputs are compared so as to analyze the benefits.Receiver processing techniques are implemented to achieve the high data rate with improved error performance at the lower decoding complexity.Considering the bandwidth efficiency as a key factor,more data symbols are sent at the given time interval by reducing the time period for signal transmission.This ensures more data being transmitted.Research works trends towards 5G mobile broadband focused on reduced the power spectral analysis and frequency localization and Related Issues with OFDM signals.There are several existing research works found Ensure communications strategies less efficient.Therefore,to overcome the several problems of interference during transmission data filter,has been conceived and implemented OFDM.F-OFDM comes as a tradeoff between the high data rate achievement and error probability.Reduction of the time factor affirms good data rate but at the same time,cost of high err or rate has to be paid.Efficient receiver processing techniques are designed to compensate between these two factors.Main obstacle due to the reduction of time period in F-OFDM signaling is to tackle the unavoidable inter symbol interferences(ISI).As a consequence,results high ISI.Most techniques of F-OFDM are designed without coding.The system portrayal is studied by processing the results under the implementatio n of convolutional encoding and OFDMA systems.The bit error rate(BER)characteristics and power spectral efficiency are analyzed under these circumstances.Efficient encoding pattern and decoding algorithm helps in reducing the errors.Analysis of the simulation results show that the convolutional encoding proficiency is improved by increasing the number of iterations.Performance indication is also related to the frame size or the interleaver size and the signal power.In other words,it comes as a trade-off between energy efficiency,bandwidth efficiency,complexity and error rates and utilizes Orthogonal Frequency Division Multiple Access(OFDMA)in order to provide a very fast data transmission rate and channel access over a wireless medium.In this proposed study work toward develop a higher order modulations,such as QPSK based F-OFDM system to limit the Inter symbol Interference(ISI)in channel properties.We analyzed the proposed system and simulated in(MATLAB).The system proposed is using Square Root Raised Cosine(SQRC)filter design specification and it also integrated with the O FDM system in the transmitter and the receiver side.Through the experimental results it was found that the proposed system minimizing the bit error rate and enhancing the spectral efficiency associated with an OFDM Signal at the receiver end.The proposed system as compared to the conventional OFDM models,achieves a high data transfer rate,well utilization of bandwidth efficiency as well as frequency localization factors.