FIXED COORDINATED BEAMFORMING WITH FAIRNESS TECHNIQUE IN HETNETS
Keywords:
Coordinated beamforming, HetNets, fairness, SINRAbstract
Heterogeneous networks consist of different base stations and levels of transmission power. Thus, beamforming interference is caused to the users in other base stations. Currently, a base station considers the weights by evaluating the maximum value of SINR at each user. However, the pico users still receive a weak signal. Therefore, we propose a technique to select the weighting which introduces a similar SINR between the user in a pico base station and the user in the macro base station. The SINR threshold of the macro user is defined as a condition to select the optimum weights. Moreover, we compare the proposed method with normal fixed coordinated beamforming. The simulation results show that the pico users receive the higher SINR and throughput.
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