Designing challenges to utilize white-space for configurable femtocell base on slotted TDM

This paper is based on deployment of white spaces which are free or unused frequency space. This term related with Television frequency broadcast range is known as TV White Space (TVWS). So the transition of analog TV signals into digital TV signals results in creation of some more free frequency spectrum that also adds up to more TV white Spaces, since earlier TV channels which were being transmitted were allotted a certain UHF/VHF frequency channel bands. Now these TV channels are encoded digitally in a slightly different band and then transmitted. With this, the availability of White Space Spectrum has increased and so, many wireless solution providers are getting attracted to develop and deploy as opportunistic spectrum access in Wi-Fi like systems working on TV White Spaces. In time domain (TDMA) these white spaces can be referred as free or unused time slots. And are selected for transmission of messages using message generator, here selection and detection is done at transmitter section.