TDMA (Time Division Multiple Access) is a digital transmission technology that allows multiple users to share the same frequency channel by dividing the signal into different time slots. It allocates a single frequency channel for a short time and then switches to another channel, with the digital samples from a single transmitter occupying different time slots across several frequency bands simultaneously. The current TDMA standard for cellular divides each channel into six time slots, with each signal using two slots, providing three times the capacity of earlier analog cellular standards.