The transmitted signal in a GSM system is of 200 kHz bandwidth and 8 users share a common bandwidth using TDMA. If at a given time 12 users are talking in a cell, the total bandwidth of the signal received by the base station of the cell will be at least (in kHz) _________?

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400 kHz
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Mechanical Engineer

400 kHz Explanation: Since GSM requires 200 KHz and only 8 users can use it using TDMA, 9th user needs another 200 KHz. 9th, 10th, 11th, 12th user can use another 200 kHz bandwidth on time share basis. Thus, for 12 user we need 400 kHz bandwidth.
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