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Abstract

Due to its attractive properties, generalized frequency division multiplexing is recently being discussed as a candidate waveform for the fifth generation of wireless communication systems (5G). generalized frequency division multiplexing is introduced as a generalized form of the widely used orthogonal frequency division multiplexing modulation scheme and since it uses only one cyclic prefix for a group of symbols rather than a CP per symbol, it is more bandwidth efficient than OFDM. In this paper, propose novel modem structures for generalized frequency division multiplexing by taking advantage of the particular structure in the modulation matrix. Our proposed transmitter is based on modulation matrix scarification through application of fast Fourier transform to reduce the implementation complexity. A unified demodulator structure for matched filter, zero forcing and minimum mean square error receivers is also derived. The proposed demodulation techniques harness the special block circulate property of the matrices involved in the demodulation stage to reduce the computational cost of the system implementation. Our derived the closed forms for the zero forcing and minimum mean square error receiver filters. Additionally, our algorithms do not incur any performance loss as they maintain the optimal performance. The computational costs of our proposed techniques are analyzed in detail and are compared with the existing solutions that are known to have the lowest complexity. It is shown that through application of our structures a substantial amount of computational complexity reduction can be achieved.

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How to Cite
B.Soundarya, & P.Balashanmuga Vadivu. (2019). Improved OFDM by Cancellation Carrier Frequency Offset in GFDM Based on Multi-Carrier Modulation for Future Machine To Machine Systems . International Journal of Intellectual Advancements and Research in Engineering Computations, 7(1), 1198–1203. Retrieved from https://ijiarec.com/ijiarec/article/view/1109