128-QAM Based mm-Wave Communication (5G) Architecture

Abdullah Al-Mamun Bulbul, Md. Tariq Hasan, Faysal Iqbal, Md. Bellal Hossain


Demand for bandwidth can never be fulfilled with any definite amount. Population is growing at a high speed which also causes an increase in the demand for bandwidth. Currently available bands ranging up-to 10 GHz is at the edge of saturation. So a newer and unutilized bandwidth is mandatory for the fulfillment of the increasing bandwidth demand. The millimeter wave band which is fully used. This band offers a wide range of bandwidth (30 GHz ~ 300 GHz). A slight part of this band, the E-band, has been used in the design of the 5G network proposed in this paper. Single-carrier frequency-division multiple access (SC-FDMA) and orthogonal frequency-division multiple access (OFDMA) have been proposed for the uplink and downlink multiple access respectively. A Rayleigh fading channel is used as the propagation environment along with considering different losses at sea level (T = 0 ˚C, P = 760 mm Hg, H2O = 1 gm/m3). 128-quadrature amplitude modulation (QAM) has been used as the principle modulation technique. Also, the use of adaptive beam-forming antennas ensure an increased coverage of about 2 km.


E-band; OFDMA; SC-FDMA; 128-QAM; 5G

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