A Deep Dive into Modern Wireless Communication Infrastructure
DOI:
https://doi.org/10.5281/zenodo.22111350Keywords:
Smart Antenna Technologies, Adaptive Antenna Arrays, Base Station Antenna Systems, User Equipment Antennas, Spatial Diversity Techniques, Spatial Filtering Methods, Co-Channel Interference Suppression, Channel State Information, Eigenstructure Antenna Algorithms, Directional Beamforming, Multipath Fading Mitigation, Omnidirectional Versus Smart Antennas, Mobile Communication Systems, Energy-Efficient Antenna Design, Radiation Exposure Reduction, High Bit-Rate Wireless Services, Mobile Multimedia Communications, Compact Antenna Architectures, Interference Rejection Capability, Antenna Tracking MechanismsAbstract
Smart antenna technologies both at the base station and user equipment levels are analysed and critically reviewed. Adaptive antenna arrays consisting of multiple elements are becoming a realistic option to improve the performance of wireless mobile communication systems. The employment of smart antennas at base stations and access points enables the implementation of space diversity and spatial filtering techniques. Spatial filtering can significantly suppress co-channel interferers, but requires up-to-date channel information. Eigenstructure techniques are an important class of smart antenna algorithms that can offer performance close to the optimum with less channel information. Smart antennas can also be used in user equipment specifications. Recent research has addressed the potential of these devices in supporting a sleeker configuration for the user terminal with limited energy and power consumption, reducing the risk of exposing sensitive body parts to high radiation levels.
Antennas for mobile systems are rapidly becoming a topic of widespread interest both in academia and industry. Current antennas for mobile applications are mostly omnidirectional in nature, providing a uniform coverage pattern. Smart antennas offer a new paradigm. By adopting a directional pattern, smart antennas have a higher gain in the desired direction and exhibit fascinating properties such as resistance to multipath fading, rejection of co-channel interference, rejection of unwanted radiators, and tracking capability. With the increasing demand for high bit-rate and reliable mobile multimedia services, the deployment of compact smart antennas at user terminals could also provide alternative system design solutions.
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