fdma การใช้

• FDMA is distinct from frequency division duplexing ( FDD ).
• Within each FDMA channel there are four TDMA time slots in each direction.
• In the FDMA case, the data streams are allocated to different nodes or devices.
• FDMA, on the other hand, is an access method in the data link layer.
• The real definition of " Frequency division multiple access " is available at FDMA.
• The performance of SC-FDMA in relation to OFDMA has been the subject of various studies.
• For avoidance of inter-cell interference, FDMA with DCA or DFS is once again of interest.
• With FDMA, the transmitting and receiving frequencies used by different users in each cell are different from each other.
• In all current commercial technologies based on FDMA or on a combination of TDMA / FDMA ( e . g.
• In all current commercial technologies based on FDMA or on a combination of TDMA / FDMA ( e . g.
• DECT operates as a multicarrier Frequency division multiple access ( FDMA ) / Time division multiple access ( TDMA ) system.
• The increased FDMA system, there must be at least a one cell gap between cells which reuse the same frequency.
• FDMA access provides up to 10 frequency channels, and TDMA access provides 24 time slots per every frame of 10 ms.
• Acoustic telegraphy was similar in concept to present-day FDMA, or Frequency Division Multiple Access, used with radio frequencies.
• If FCA is combined with conventional FDMA and perhaps or TDMA, a fixed number of voice channels can be transferred over the cell.
• Options : cdma, tdma, fdma or any other one  Preceding contribs ) 12 : 13, 8 February 2010 ( UTC)
• An advanced form of FDMA is the orthogonal frequency-division multiple access ( OFDMA ) scheme, for example used in 4G cellular communication systems.
• With the introduction of CDMA signals, the constellation will be expanded to 30 active satellites by 2025; this may require eventual deprecation of FDMA signals.
• Different frequencies ( ARFCNs ) are used for the frequency-based component of GSMs multiple access scheme ( FDMA  frequency-division multiple access ).
• Similarly, FDMA systems must use a guard-band between adjacent channels, due to the unpredictable doppler shift of the signal spectrum because of user mobility.