Advantages and disadvantages of FDMA

The term FDMA full form is Frequency Division Multiple Access gives users an individual allocation of one or several frequency bands or channel. As FDMA system use low bit rates compared to average delay spread it offers the following advantages. This article gives information about the advantages and disadvantages of FDMA to know more details about FDMA. 

Advantages of FDMA :
  • Synchronization is not necessary
  • If the channel is not used, it sits idle
  • Capacity can be increased can obtain efficient bit code
  • Very simple and easy to implement with respect to hardware resources
  • The complexity of the system is low
  • Simple algorithmically and from a hardware standpoint 
  • All station can operate continuously to 24 hours without having to wait for their turn to come
  • The reduction of the information bit rate can make a good effect on the capacity
  • No need for any network timing
  • FDMA is efficient, so it manages less number of a user population
  • No restriction regarding the type of base-band or modulation
  • Reduce cost and lowers the intersymbol interference ( ISI )
Disadvantages of FDMA :
  • Cell site cost is high
  • The bandwidth of the FDMA channel is narrow
  • Carry only one phone circuit at a time
  • As a result of nonlinear, inter-modulation products are generated
  • Inter modulation frequencies can cause adjacent channel interference
  • Network planing is time consuming
  • Spectrum planning is cumbersome and time consuming
  • Does not differ significantly from an analog system
  • The presence of guard band
  • Frequency allocated permanently 
  • Maximum bit rate per channel is fixed
  • Crosstalk may cause interference among frequency and disrupt the transmission