Sfdma Spatial Focus Division Multiple Access

Currently we see a multitude of emerging ideas that aim to provide information and higher level services for mobile users Starting with simple voice communications and information browsing they reach towards multi component services like personal travel assistance comprising wireless communication information technology and navigation Provocatively we could argue that the latter ones are likely to create a much higher demand for bandwidth than the agglomerate of concepts dubbed multimedia Knowledge of the user s position is desirable for various reasons Services like personal travel assistance or local shopping guidance need this information to achieve user friendliness Apart from being user friendly the amount of information transmitted can be reduced by preselecting the locally relevant The concept of Spatial Focus Division Multiple Access SFDMA facilitates these things that take place at the application layer by yielding the user s position as well as making use of it within the physical layer itself in order to increase the system s capacity To perform this task SFDMA merely combines well known techniques out of the wireless communication s tool box