A comparison of wi-fi and wimax with case studies - Florida State ...
A comparison of wi-fi and wimax with case studies - Florida State ...
A comparison of wi-fi and wimax with case studies - Florida State ...
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Figure 3-12 DSSS-OFDM PSDU Format<br />
DSSS-OFDM is a composite framing technology. Its PPDU structure is shown in Figure 3-<br />
13[21] <strong>and</strong> Figure 3-14[21]. The preamble <strong>and</strong> head are framed by HR-DSSS mode, <strong>and</strong> the<br />
PSDU is the ERP-OFDM PPDU. The preamble has long <strong>and</strong> short formats. With this method,<br />
the protection is not required. The data rate <strong>of</strong> DSSS-OFDM preamble <strong>and</strong> head is the same <strong>wi</strong>th<br />
DSSS. [13][14][17][20][21][29]<br />
Figure 3-13 DSSS-OFDM Long Preamble Structure<br />
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