Question:
Which of the following is a major advantage of CDMA over FDMA and TDMA?
Which of the following is a major advantage of CDMA over FDMA and TDMA?
Show Hint
In CDMA all users transmit across the entire spectrum at once, separated only by codes.
Updated On: Jul 2, 2026
- No need for synchronization
- Better utilization of bandwidth
- Faster transmission of data packets
- Less interference from other users
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The Correct Option is B
Solution and Explanation
Step 1: Recall how the three access methods share the channel. FDMA splits the band into separate frequency slots. TDMA splits time into slots. In both, a slot sits idle when its owner is silent, so capacity is wasted.
Step 2: CDMA lets every user transmit over the whole band at the same time, separated by unique spreading codes. Because all users reuse the entire spectrum, the available bandwidth is used far more efficiently.
Step 3: Check the wrong options. CDMA actually needs tight synchronization and power control, so (A) is false. It does not make individual packets travel faster, so (C) is false. CDMA users share the band, so they add mutual interference rather than removing it, so (D) is false.
Step 4: The standout advantage is better utilization of bandwidth.
Step 2: CDMA lets every user transmit over the whole band at the same time, separated by unique spreading codes. Because all users reuse the entire spectrum, the available bandwidth is used far more efficiently.
Step 3: Check the wrong options. CDMA actually needs tight synchronization and power control, so (A) is false. It does not make individual packets travel faster, so (C) is false. CDMA users share the band, so they add mutual interference rather than removing it, so (D) is false.
Step 4: The standout advantage is better utilization of bandwidth.
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