Re: [STDS-802-16] CRC for FCH and DL-MAP

[Mina Sokar <msokar@SYSDSOFT.COM>]

The DL-MAP is CRC protected as all management messages.
See 802.16-2005 - 6.3.2.3 : "For the SCa, OFDM, and OFDMA PHY layers,
management messages carried on the Initial Ranging, Broadcast,
Fragmentable Broadcast, Basic, and Primary Management connections
shall have CRC usage enabled."

The FCH is not CRC protected, however it is transmitted using the most
robust burst profile (QPSK-1/2) and repeated four times.

Best Regards,

Mina Sokar
SySDSoft Inc.




Quoting "Liew, William" <William.Liew@ANDREW.COM>:

> As a common practice, a CRC should be used for FCH, DL-MAP and other
> important messages to assure the integrity of the received messages.
> However, it seems that in 802.16-2005 the FCH and DL-MAP are not CRC
> protected.
>
>
>
> Dr. Will Liew
>
> Andrew Corp.
>
> 434-386-5212
>
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