Digital Enhanced Cordless Telecommunications

Digital Enhanced Cordless Telecommunications, usually known by the acronym DECT, is a digital communication standard, which is primarily used for creating cordless phone systems. It originated in Europe, where it is the universal standard, replacing earlier cordless phone standards, such as 900 MHz CT1 and CT2 DECT is European standard system. It is a CT-2 like system and the application are slightly different from the cellular system.

                  APPLICATIONS:

v     Use the public network to mobile communication within the home and the immediate vicinity.

v     Provide business communication locally. In this case, the PSTN has been removed the radio fixed point (RFP), also labeled or cluster controls.

v     Local loop using DECT to provide wireless local loops is a cost effective alternative to running copper wires to residential premises.

SYSTEM STRUCTURE:

                 

ü      Duplex method          – TDD

ü      Access method         – TDMA

ü      RF power of handset – 10 MW

ü      Channel bandwidth   - 1728 MHz/ channel

ü      Number of carriers    - 5 (a multiple carrier system)

ü      Frequency                  - 1800 MHz to 1900 MHz

CHARACTERISTICS:

                 

ü      Frame             – 10 MS

ü      Time slots      - 12

ü      Bit rates          - 388 kb/ slot

ü      Modulation     - GFSK ( Gaussian fsk)

ü      Hand off          - YES