All signal multiplexing techniques were invented to permit a single physical communication channel to carry multiple different signals. This reduces the investment costs in physical communication channels: e.g. long distance telegraph lines, long distance telephone lines, microwave links, orbiting communication satellites, fiber optic cable.
Time Division Multiplexing can be implemented using either analog or digital signaling means.
Frequency-division multiplexing, wavelength-division multiplexing, and time-division multiplexing.
What is multiplexing and its diagram
Multiplexing is the process of combining multiple signals over one media line. There are several types of multiplexing: frequency division, time division, and wavelength division.
In analog transmission, signals are commonly multiplexed using frequency-division multiplexing (FDM)
what is function of amplitude division multiplexing
Multiplexing techniques vary widely based on what is being multiplexed. Modern telecommunications use a very wide array of techniques including: TDM - examples: TDMA, T-carrier FDM - examples: DWDM Spatial - example: MIMO Code division - examples: CDMA Phase or polarization division - cable/satellite TV Statistcal - examples: packet mode (STS), FHSS etc etc. This is far from a complete list. I think the question needs to be more specific.
Frequency-division multiplexing and wavelength-division multiplexing
http://zone.ni.com/devzone/cda/ph/p/id/269
pulse shift technique
Does Cable television use time-division multiplexing
error correction data compression
Space division multiplexing uses spacing to separate channels in a communications link. These separations may be done by frequency, insulation, or distance (spacing). Time division multiplexing is one way of doing the spacing separation. Space division multiplexing may use other techniques, such as TDM, FDM, etc., to maintain separation so that the conversations do not collide with each other.