OFDM: Comparison with Multicarrier Techniques and Applications

---------------------------------------------------------------------***----------------------------------------------------------------Abstract –Orthogonal Frequency Division Multiplexing (OFDM)is the promising candidate of a multiple carrier modulation technique because it does not require equalizers. OFDM is robust in adverse channel conditions and allows a high level of spectral efficiency. It effectively mitigates performance degradations due to multipath and is capable of combating deep fades in part of the spectrum. Orthogonal Frequency Division Multiplexing (OFDM) is an emerging multi-carrier modulation scheme, which has been adopted for several wireless standards such as IEEE 802.11a and HiperLAN2.In this paper, the comparison between other carriertechniques like single carrier transmission, multi carrier transmission, conventional multi carrier technique, CDMA, TDMA, FDMA. The wireless communication broadcasting, WLAN, WMAN who are implemented OFDM are detailedand compared here. The advantages and disadvantages of OFDM are discussed in this paper.