DATA LINK LAYER WIRED NETWORKS
MULTIPLE ACCESS PROTOCOLS MAC
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Different users in different time slots
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Each user is assigned unique frequency slots
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Each user is assigned a unique code sequence
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Each signal is modulated with frequency modulation technique
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Detailed explanation-1: -In simplest terms, TDMA enables multiple users to share the same frequency by dividing each cellular channel into different time slot s. In effect, a single frequency supports multiple and simultaneous data channels. So, with a two-time slot TDMA, two users can share the same frequency.
Detailed explanation-2: -Explanation: Guard times are utilized to allow synchronization of the receivers between different slots and frames.
Detailed explanation-3: -Explanation: Site 1 transmits a burst, starting at the beginning of each TDMA frame. The burst lasts 180 mS, so at a rate of 250kbit/s site 1 sends 45, 000 bits per burst, or 45, 000 bits per second. Site 2 transmits a burst, timed to arrive at the satellite just after the end of burst 1.