Spectrum Most often used in the context of frequency allocations. Refers to the frequencies allowed for a type of service out of the total available. Spread Spectrum Technique to reduce and avoid interference by taking advantage of statistical means to send a signal between two points. TDMA Time Division Multiple Access . Technique which assigns each subscriber desiring service a different time slot on a given frequency.
Signal compression is acheieved by running at very high frequencies.
Each user can then deliver the fixed packet message in a brief burst of time, thereby increasing the capacity of the system. Transmitter Equipment which feeds the radio signal to an antenna, for transmission. It consists of active components such as the upmixer, driver and PA and passive components such as the TX filter. Taken together, these components impress a signal onto an RF carrier of the correct frequency by instantaneously adjusting its phase, frequency, or amplitude and provide enough gain to the signal to project it through the ether to its intended target. Trunk Telephone circuit or channel between two central offices or switching entities.