The resulting signal is at a low power level and appears more like noise. Known as frequency reuse, the method is widely used in cellular radio systems. Each time slot is allocated to one user. A variation of this method is called carrier sense multiple access with collision avoidance (CSMA-CA). Seecompletedefinition Dig Deeper on Mobile data, back-end services and infrastructure All News Get Started Evaluate Manage Problem Solve Why IT needs mobile data analytics Global Positioning System (GPS) Kinvey MBaaS tool helps apps access SAP back-end systems Enterprise file-sharing technology requires mobile app integration Load More View All Kinvey MBaaS tool helps apps access SAP back-end systems Citrix ShareFile adds information rights management Mobile microchip technology plays a major role in the future Box partnerships help it run with the big dogs Load More View All News Global Positioning System (GPS) mobile backend as a service (mobile BaaS) Adopt social collaboration tools with a purpose Wi-Fi (802.11 standard) Load More View All Get started mobile backend as a service (mobile BaaS) Do I need mobile backend as a service to develop mobile apps? MBaaS platforms let developers reduce, reuse and recycle code Could collaboration software, social media unseat email? Load More View All Evaluate Why IT needs mobile data analytics Enterprise file-sharing technology requires mobile app integration Do I need mobile backend as a service to develop mobile apps? IT needs to change its mindset around mobile data access Load More View All Manage EFSS combats consumer cloud storage risks Mobile content management software, EFSS protect data in the cloud era MBaaS links mobile apps with legacy infrastructure Deploying cloud file-sharing services: Five steps to success Load More View All Problem solve PRO+ Content Find more PRO+ content and other member only offers, here. The result is that the digital voice is spread over a much wider bandwidth that can be shared with other users using different codes. Most cell sites have three antenna arrays to separate their coverage into isolated 120 sectors (a). Frequency-division multiplexing (FDM) is also distinct from FDMA. When they want to send data, they listen first and then transmit if no other signals are on the line. FDMA is a basic technology in the analog Advanced Mobile Phone Service (AMPS), the most widely-installed cellular phone system installed in North America.
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