What is an important factor in pulse-code modulation using time-division multiplex?

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Multiple Choice

What is an important factor in pulse-code modulation using time-division multiplex?

Synchronization of transmit and receive clock pulse rates is essential in pulse-code modulation with time-division multiplexing because the system relies on precise timing to place and recover samples in their correct time slots. The transmitter sends a sequence of samples tied to its clock, and the receiver must sample and interpret those slots in lockstep with the same timing. If the clocks drift apart, time slots shift, samples become misaligned, and data from different channels can collide or be read incorrectly, leading to bit errors and distorted reconstruction of the original signals. Ensuring both ends share a stable, common timing reference preserves frame structure and sample boundaries, which is why clock synchronization is the key factor. Frequency separation applies to frequency-division multiplexing rather than PCM-TDM. Overmodulation and undermodulation concern analog modulation distortions, not the timing-critical aspect of PCM-TDM. Slight variations in power supply voltage can cause general equipment instability, but they do not address the fundamental need for synchronized clocks to maintain proper timing and data integrity.

Synchronization of transmit and receive clock pulse rates is essential in pulse-code modulation with time-division multiplexing because the system relies on precise timing to place and recover samples in their correct time slots. The transmitter sends a sequence of samples tied to its clock, and the receiver must sample and interpret those slots in lockstep with the same timing. If the clocks drift apart, time slots shift, samples become misaligned, and data from different channels can collide or be read incorrectly, leading to bit errors and distorted reconstruction of the original signals. Ensuring both ends share a stable, common timing reference preserves frame structure and sample boundaries, which is why clock synchronization is the key factor.

Frequency separation applies to frequency-division multiplexing rather than PCM-TDM. Overmodulation and undermodulation concern analog modulation distortions, not the timing-critical aspect of PCM-TDM. Slight variations in power supply voltage can cause general equipment instability, but they do not address the fundamental need for synchronized clocks to maintain proper timing and data integrity.

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