[srslte-users] Downlink HARQ with soft combining

[Tuan Hoang Dinh]

Hi Xavier,

Thanks for your answer, I have found the code you guide me and see the soft
combining function.
I also installed CLion as your advice and studying its features.

I appreciate your help a lot.

Best regards,
Tuan

Vào Th 2, 13 thg 9, 2021 vào lúc 17:20 Xavier Arteaga <xavier at srs.io> đã
viết:

> Hi Tuan,
> First of all, many thanks for your interest!
>
> The soft-combining is performed at the rate matching the receiver side.
> The demodulated-soft bits are deinterleaved and combined in soft-buffers.
>
> For LTE:
> https://github.com/srsran/srsRAN/blob/master/lib/src/phy/fec/turbo/rm_turbo.c#L403
>
> For NR:
> https://github.com/srsran/srsRAN/blob/master/lib/src/phy/fec/ldpc/ldpc_rm.c#L233
>
> I recommend you load srsRAN with an IDE (CLion works like a charm) and
> explore the functions and structure usages.
>
> Kind regards,
> Xavier
>
>
> On Wed, 8 Sept 2021 at 11:35, Tuan Hoang Dinh <tuanmcx58 at gmail.com> wrote:
>
>> Hi,
>>
>> I'm using srsRAN and wanna study how UE process HARQ in Downlink channel.
>>
>> I have been searching in the source code of srsUE to find which part is
>> the function do soft combining between
>> the previous (erroneous) Transpot Block and retransmission Transport Block.
>> Because in 3GPP document, they said that UE needs to combine 2 blocks and
>> then try to decode again.
>> Could someone helps me know the position of that function?
>>
>> I appreciate your help!
>>
>> Best regards,
>> Tuan
>> _______________________________________________
>> srslte-users mailing list
>> srslte-users at lists.softwareradiosystems.com
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>>
>
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