Introduction - If you have any usage issues, please Google them yourself
This paper depicts the development of Orthogonal
Frequency Division Multiplexing a historical perspective.
A summary of major research milestones are noted that
contributed to modern-day OFDM. These contributions
include the use of discrete Fourier transforms replacing the
analog implementation and addition of cyclic extensions to
ensure orthogonality among the sub-channels. Also, channel
equalization algorithms to suppress inter-symbol interference
and inter-carrier interference, channel estimation through the
insertion of pilot tones among data blocks, peak-to-average
power ratio reduction, and synchronization techniques.