FCH.c File Reference

#include "main.h"
#include "802_22.h"

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Functions
int	fn_NetSim_CR_TransmitFCH ()
int	fn_NetSim_CR_CPE_ProcessFCH (NetSim_PACKET *pstruPacket)

Function Documentation

fn_NetSim_CR_CPE_ProcessFCH()

int fn_NetSim_CR_CPE_ProcessFCH

(

NetSim_PACKET *

pstruPacket

)

The FCH shall be encoded using the binary convolutional channel coding .The FCH shall be transmitted using the PHY mode 5. The 15-bit randomizer is initialized using the 15 LSBs of the BS ID. The BS ID is transmitted as part of the SCH and is thus available to the CPEs for decoding. The 24 FCH bits are encoded and mapped onto 24 data subcarriers. In order to increase the robustness of the FCH, as signaled in the SCH, the encoded and mapped FCH data may be transmitted using the PHY mode 4. The FCH then occupies the first two OFDM slots.

Definition at line 66 of file FCH.c.

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fn_NetSim_CR_TransmitFCH()

int fn_NetSim_CR_TransmitFCH

(

)

The frame control header is transmitted as part of the downstream PDU in the DS subframe. The length of the FCH shall be 3 bytes.The FCH shall be sent in the first subchannel of the symbol immediately following the frame preamble symbol except when it I s the first frame of a superframe belonging to a specific BS where this symbol will follow the SCH.

This second symbol of the frame carrying the FCH shall use a cyclic prefix TCP=1/4 TFFT. The FCH shall be encoded using the binary convolutional channel coding .The FCH shall be transmitted using the PHY mode 5.

Definition at line 11 of file FCH.c.

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