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Michael Black
OpenXG UE
Commits
4a86a479
Commit
4a86a479
authored
Jun 14, 2016
by
Sandeep Kumar
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Plain Diff
integrate send_IF4 with alaw lut
parent
78982e9c
Changes
2
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2 changed files
with
44 additions
and
29 deletions
+44
-29
openair1/PHY/LTE_TRANSPORT/if4_tools.c
openair1/PHY/LTE_TRANSPORT/if4_tools.c
+41
-28
openair1/PHY/LTE_TRANSPORT/if4_tools.h
openair1/PHY/LTE_TRANSPORT/if4_tools.h
+3
-1
No files found.
openair1/PHY/LTE_TRANSPORT/if4_tools.c
View file @
4a86a479
...
...
@@ -29,7 +29,7 @@
/*! \file PHY/LTE_TRANSPORT/if4_tools.c
* \brief
* \author Mauricio Gunther, S. Sandeep Kumar, Raymond Knopp
* \author
Fredrik Skretteberg, Tobias Schuster,
Mauricio Gunther, S. Sandeep Kumar, Raymond Knopp
* \date 2016
* \version 0.1
* \company Eurecom
...
...
@@ -43,6 +43,7 @@
#include <stdint.h>
#else
#include "PHY/LTE_TRANSPORT/if4_tools.h"
#include "PHY/TOOLS/ALAW/alaw_lut.h"
#endif
// Get device information
...
...
@@ -50,11 +51,15 @@ void send_IF4(PHY_VARS_eNB *eNB, eNB_rxtx_proc_t *proc) {
int
frame
=
proc
->
frame_tx
;
int
subframe
=
proc
->
subframe_tx
;
LTE_DL_FRAME_PARMS
*
fp
=
&
eNB
->
frame_parms
;
int32_t
**
txdataF
=
eNB
->
common_vars
.
txdataF
[
0
];
uint16_t
i
;
uint16_t
symbol_id
,
element_id
;
uint16_t
db_fulllength
=
12
*
fp
->
N_RB_DL
;
uint16_t
db_halflength
=
db_fulllength
>>
1
;
int
slotoffsetF
=
(
subframe_tx
)
*
(
fp
->
ofdm_symbol_size
)
*
((
fp
->
Ncp
==
1
)
?
12
:
14
)
+
1
;
int
blockoffsetF
=
slotoffsetF
+
fp
->
ofdm_symbol_size
-
db_halflength
;
float_t
data_block_length
=
1200
*
(
fp
->
ofdm_symbol_size
/
2048
);
uint16_t
*
data_block
=
(
uint16_t
*
)
malloc
(
data_block_length
*
sizeof
(
uint16_t
));
int16_t
*
data_block
=
(
int16_t
*
)
malloc
(
db_fulllength
*
sizeof
(
int16_t
));
// Caller: RCC - DL *** handle RRU case - UL and PRACH ***
if
(
eNB
->
node_function
==
NGFI_RCC_IF4
)
{
...
...
@@ -63,13 +68,16 @@ void send_IF4(PHY_VARS_eNB *eNB, eNB_rxtx_proc_t *proc) {
dl_packet
->
data_block
=
data_block
;
for
(
i
=
0
;
i
<
fp
->
symbols_per_tti
;
i
++
)
{
for
(
symbol_id
=
0
;
symbol_id
<
fp
->
symbols_per_tti
;
symbol_id
++
)
{
//Do compression of the two parts and generate data blocks
// Do compression of the two parts and generate data blocks
for
(
element_id
=
0
;
element_id
<
db_halflength
;
element_id
++
)
{
data_block
[
element_id
]
=
lin2alaw
[
(
txdataF
[
0
][
blockoffsetF
+
element_id
])
&
0xffff
+
32768
];
data_block
[
element_id
]
|=
lin2alaw
[
(
txdataF
[
0
][
blockoffsetF
+
element_id
])
>>
16
+
32768
]
<<
8
;
//symbol = eNB->common_vars.txdataF[0][0 /*antenna number*/][subframe*fp->ofdm_symbol_size*(fp->symbols_per_tti)]
//data_block[j] = Atan(symbol[fp->ofmd_symbol_size - NrOfNonZeroValues + j -1])<<16 + Atan(symbol[fp->ofmd_symbol_size - NrOfNonZeroValues + j]);
//data_block[j+NrOfNonZeroValues] = Atan(subframe[i][j+1])<<16 + Atan(subframe[i][j+2]);
data_block
[
element_id
+
db_halflength
]
=
lin2alaw
[
(
txdataF
[
0
][
slotoffsetF
+
element_id
])
&
0xffff
+
32768
];
data_block
[
element_id
+
db_halflength
]
|=
lin2alaw
[
(
txdataF
[
0
][
slotoffsetF
+
element_id
])
>>
16
+
32768
]
<<
8
;
}
// Update information in generated packet
dl_packet
->
frame_status
.
sym_num
=
i
;
...
...
@@ -83,6 +91,9 @@ void send_IF4(PHY_VARS_eNB *eNB, eNB_rxtx_proc_t *proc) {
// 0)) < 0) {
// perror("RCC : ETHERNET write");
//}
slotoffsetF
+=
fp
->
ofdm_symbol_size
;
blockoffsetF
+=
fp
->
ofdm_symbol_size
;
}
}
else
{
IF4_ul_packet_t
*
ul_packet
=
(
IF4_ul_packet_t
*
)
malloc
(
sizeof_IF4_ul_packet_t
);
...
...
@@ -90,32 +101,34 @@ void send_IF4(PHY_VARS_eNB *eNB, eNB_rxtx_proc_t *proc) {
ul_packet
->
data_block
=
data_block
;
for
(
i
=
0
;
i
<
fp
->
symbols_per_tti
;
i
++
)
{
for
(
symbol_id
=
0
;
symbol_id
<
fp
->
symbols_per_tti
;
symbol_id
++
)
{
//Do compression of the two parts and generate data blocks
// Do compression of the two parts and generate data blocks
for
(
element_id
=
0
;
element_id
<
db_halflength
;
element_id
++
)
{
data_block
[
element_id
]
=
lin2alaw
[
(
txdataF
[
0
][
blockoffsetF
+
element_id
])
&
0xffff
+
32768
];
data_block
[
element_id
]
|=
lin2alaw
[
(
txdataF
[
0
][
blockoffsetF
+
element_id
])
>>
16
+
32768
]
<<
8
;
//symbol = eNB->common_vars.txdataF[0][0 /*antenna number*/][subframe*fp->ofdm_symbol_size*(fp->symbols_per_tti)]
//data_block[j] = Atan(symbol[fp->ofmd_symbol_size - NrOfNonZeroValues + j -1])<<16 + Atan(symbol[fp->ofmd_symbol_size - NrOfNonZeroValues + j]);
//data_block[j+NrOfNonZeroValues] = Atan(subframe[i][j+1])<<16 + Atan(subframe[i][j+2]);
data_block
[
element_id
+
db_halflength
]
=
lin2alaw
[
(
txdataF
[
0
][
slotoffsetF
+
element_id
])
&
0xffff
+
32768
];
data_block
[
element_id
+
db_halflength
]
|=
lin2alaw
[
(
txdataF
[
0
][
slotoffsetF
+
element_id
])
>>
16
+
32768
]
<<
8
;
}
// Update information in generated packet
ul_packet
->
frame_status
.
sym_num
=
i
;
// Write the packet(s) to the fronthaul
slotoffsetF
+=
fp
->
ofdm_symbol_size
;
blockoffsetF
+=
fp
->
ofdm_symbol_size
;
}
}
}
void
recv_IF4
(
PHY_VARS_eNB
*
eNB
,
eNB_rxtx_proc_t
*
proc
)
{
void
recv_IF4
(
PHY_VARS_eNB
*
eNB
,
eNB_rxtx_proc_t
*
proc
,
uint16_t
*
packet_type
,
uint32_t
*
symbol_number
)
{
// Caller: RRU - DL *** handle RCC case - UL and PRACH ***
if
(
eNB
->
node_function
==
NGFI_RRU_IF4
)
{
for
(
i
=
0
;
i
<
fp
->
symbols_per_tti
;
i
++
)
{
// Read packet(s) from the fronthaul
if
(
dev
->
eth_dev
.
trx_read_func
(
&
dev
->
eth_dev
,
...
...
@@ -140,7 +153,7 @@ void recv_IF4(PHY_VARS_eNB *eNB, eNB_rxtx_proc_t *proc) {
void
gen_IF4_dl_packet
(
IF4_dl_packet_t
*
dl_packet
,
eNB_rxtx_proc_t
*
proc
)
{
// Set Type and Sub-Type
dl_packet
->
type
=
0x080A
;
dl_packet
->
type
=
IF4_PACKET_TYPE
;
dl_packet
->
sub_type
=
IF4_PDLFFT
;
// Leave reserved as it is
...
...
@@ -160,7 +173,7 @@ void gen_IF4_dl_packet(IF4_dl_packet_t *dl_packet, eNB_rxtx_proc_t *proc) {
void
gen_IF4_ul_packet
(
IF4_ul_packet_t
*
ul_packet
,
eNB_rxtx_proc_t
*
proc
)
{
// Set Type and Sub-Type
ul_packet
->
type
=
0x080A
;
ul_packet
->
type
=
IF4_PACKET_TYPE
;
ul_packet
->
sub_type
=
IF4_PULFFT
;
// Leave reserved as it is
...
...
@@ -184,7 +197,7 @@ void gen_IF4_ul_packet(IF4_ul_packet_t *ul_packet, eNB_rxtx_proc_t *proc) {
void
gen_IF4_prach_packet
(
IF4_prach_packet_t
*
prach_packet
,
eNB_rxtx_proc_t
*
proc
)
{
// Set Type and Sub-Type
prach_packet
->
type
=
0x080A
;
prach_packet
->
type
=
IF4_PACKET_TYPE
;
prach_packet
->
sub_type
=
IF4_PRACH
;
// Leave reserved as it is
...
...
openair1/PHY/LTE_TRANSPORT/if4_tools.h
View file @
4a86a479
...
...
@@ -38,6 +38,8 @@
* \warning
*/
/// Macro for IF4 packet type
#define IF4_PACKET_TYPE 0x080A
#define IF4_PULFFT 0x0019
#define IF4_PDLFFT 0x0020
#define IF4_PRACH 0x0021
...
...
@@ -179,4 +181,4 @@ void gen_IF4_prach_packet(IF4_prach_packet_t*, eNB_rxtx_proc_t*);
void
send_IF4
(
PHY_VARS_eNB
*
,
eNB_rxtx_proc_t
*
);
void
recv_IF4
(
PHY_VARS_eNB
*
,
eNB_rxtx_proc_t
*
,
int
*
,
in
t
*
);
void
recv_IF4
(
PHY_VARS_eNB
*
,
eNB_rxtx_proc_t
*
,
uint16_t
*
,
uint32_
t
*
);
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