Integrated Digital Enhanced Network (iDEN): A wireless communications technology from Motorola that provides support for voice, data, short messages (SMS) and dispatch radio (two-way radio) in one phone. Operating in the 800MHz and 1.5GHz bands and based on TDMA, iDEN uses Motorola's VSELP (Vector Sum Excited Linear Predictors) vocoder for voice compression and QAM modulation to deliver 64 Kbps over a 25KHz channel. Each 25KHz channel can be divided six times to transmit any mix of voice, data, dispatch or text message. Used by various carriers around the globe, Nextel Communications provides nationwide coverage in the U.S.

 

Related Words

Integrated Digital Enhanced Network (iDEN): A wireless communications technology from Motorola that provides support for voice, data, short messages (SMS) and dispatch radio (two-way radio) in one phone. Operating in the 800MHz and 1. . . . View Full Definition

Integrated Rate Law: Rate laws like d[A]/dt = -k[A] give instantaneous concentration changes. To find the change in concentration over time, the instantaneous changes must by added (integrated) over the desired . . . View Full Definition

Integrated Services Digital Network (ISDN): Basically a way to move more data over regular existing phone lines. ISDN is available to much of the USA and in most markets it is priced very comparably to standard analog phone circuits. . . . View Full Definition

Integrated Pest Management (IPM): A pest control strategy based on the determination of an economic threshold that indicates when a pest population is approaching the level at which control measures are necessary to prevent . . . View Full Definition