||Prof. Ir. Dr Sharul Kamal Abdul Rahim
Wireless Communication Centre (WCC),
Faculty of Electrical Engineering, Universiti Teknologi Malaysia
Title: 5G Beamforming Network for Future Communication System
The presentation starts by providing an evaluation briefing of wireless mobile communication systems is provided with emphasising on the 5G potential requirements and challenges in terms of data rate and number of connected devices. In order to meet the 5G requirements, a verity of new technologies are involved such as massive MIMO, beamforming and novel modulation and coding schemes. In addition, millimetre wave is the potential frequency band for 5G communications, however shorter waves are more porn to attenuation due to rain, and hence a large antenna array is needed to overcome this problem.
The presentation focuses on beamforming technology and mainly antenna design in beamforming application and networks. Beamforming can be classified into two main categories namely adaptive and switched beamforming. Adaptive beamforming schemes can change the beamforming pattern dynamically to enhance the reception of the desired signal while mitigating the interference signal. While in switched beamforming approach, the beam pattern is changed according to the received signal. Switched beamforming involves Butler matrix to increases the system capacity and provides a higher signal to interference ratio, consequently enhancing the overall system performance. Butler matrix has the following advantages namely Simple and easy to fabricate, require few microwave components and generate narrow, highly directive and orthogonal beams.