Ofdm; Fft; Figure 15: Example Moca Peer-To-Peer Network - Hitron CODA-4*8 Series DOCSIS User Manual

Wifi gateway

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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

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.

Hitron CODA-4x8x User's Guide

2012 Hitron Technologies

2016 Hitron Technologies

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Coda-4 8 series