An LCMV based 60GHz phased array system for short-range communication

Abstract

With the advent of new technologies every day and with each technology more bandwidth intensive than the previous, The need for some transformative technology to coop with the bandwidth problem is ever growing. The current technologies like LTE uses MIMO, OFDM and coding techniques that have reached their limits and provide an almost theoretical efficiency but they also in the near future may be uanble to handle this increase in bandwidth requirement. mmWave wireless systems, operating in the range of 30–300 GHz possesses the potential to tackle this bandwidth dilemma by achieving speeds in the Gbps range. 60 GHz range in the mmWave spectrum due to its wireless Characteristics and free licensing is the target of research for communications in both indoor and Outdoor scenarios. mmWaves due to its smaller wavelengths has some disadvantages for communication and were previously not fit for long range communications but due to advancements in antenna fabrication technology and with smart antennas capable of spatial multiplexing and beamforming, these disadvantages have been neutralized and a huge bandwidth is now available to be used for communication. In this paper we investigate the performance of the an LCMV (Linearly Constrained Minimum Variance) beamformer at the receiving end of a 60Ghz indoor communication system. The performance is measured with noise sources at different locations and different number of sensor array elements.