Version 1.0, 11/2016. Copyright 2012 Hitron Technologies
43
Version 1.0, 11/2016. Copyright 2016 Hitron Technologies
43
Hitron CODA-4x8x User’s Guide
Figure 15: Example MoCA Peer-to-Peer Network
3.1.13 OFDM
Orthogonal Frequency-Division Multiplexing (OFDM) is a physical-layer data
encoding method for transmitting and receiving data on Radio Frequency (RF)
media, such as the CODA-4x8x’s cable connection.
OFDM takes a single wide-band signal and separates it into multiple simultaneous
subcarriers across the available RF spectrum, separated by the minimum frequency
necessary to ensure non-interference among sub-carriers. “Orthogonal”, in this
usage, refers to this non-interfering quality of the technique.
The primary advantage of OFDM is that a signal encoded using the method can
withstand suboptimal conditions on the RF medium. Depending on its
implementation, OFDM can also enable faster signal throughput.
3.1.14 FFT
The Fast Fourier Transform (FFT) is an algorithm for rapidly implementing Fourier
analysis of a data stream, used by modulation methods such as OFDM. Fourier
analysis is a mathematical technique that enables the representation of data using
simpler trigonometric functions.
In this implementation, Fourier analysis is used to construct the frequency data for
transmission, and to deconstruct received frequency data.
To Next Page
Loading...
Need help?
General
