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OFDM vs. DSSS

gisle_vanem
Community Member

‎09-02-2004 01:49 AM - edited ‎07-04-2021 09:57 AM

How many frequencies are used in OFDM? And how

does this modulation relate to Spread Spectrum.

I mean what's the spreading factor gained with

OFDM vs. DSSS? If there are only 2 carriers, can

OFDM really be classified as "Spread Spectrum"?

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wong34539
Level 11
Level 11

‎09-13-2004 12:07 PM

The Orthogonal Frequency Division Multiplexing (OFDM) used by the IEEE 802.11a uses a system of 52 subcarriers modulated by BPSK or QPSK and 16-quadrature amplitude modulation.

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