Re: [Discuss-gnuradio] Replacement for packet encoder/decoder

[Marcus Müller]

Hi Damindra!

Ha, you're more than welcome!

Sorry, I don't have a good reference more than the example tx_ofdm.grc and rx_ofdm.grc, the doxygen documentation to the blocks used therein and their source code, if you care for implementation details.

Best regards,
Marcus

On 14.12.2016 01:09, Damindra Bandara wrote:

Dear Marcus,

Thank you very much for being patient with me and answering all my questions. I have one last question. Is there a good reference you could recommend me to read, to understand how the current GNURadio OFDM implementation works?

Best regards,

Damindra

On Tue, Dec 13, 2016 at 6:10 PM, Marcus Müller <address@hidden> wrote:

Hi Damindra

On 13.12.2016 23:42, Damindra Bandara wrote:

Dear Marcus,

Thank you for your suggestion.  However, according to my use case, I cannot do multiple transmissions at a higher layer.

I kind of doubt that - you're writing your own OFDM transceiver right now, and thus you're the one currently defining the format in which data is transported

I have few questions about the  "OFDM Carrier Allocator."

1- Can current  "OFDM Carrier Allocator" support multiple streams using multiple channels, or you suggest me to write a new block?

As said: write a new block!

Best regards,
Marcus

2- If the current block can support, is there any documentation I could refer?

Thanks,
Damindra

On Tue, Dec 13, 2016 at 2:19 PM, Marcus Müller <address@hidden> wrote:

Dear Damindra,

To me, that sounds like a higher-level problem – ie. you can send whatever you want across your OFDM link, and that includes e.g. ethernet or IP packets with different destinations; that would make things more flexible – you wouldn't have to statically assign a set of carriers to a single logical data stream.

But you can of course also write a OFDM Carrier Allocator (compare tx_ofdm.grc)

Best regards,

Marcus

On 12/13/2016 07:32 PM, Damindra Bandara wrote:

Dear Marcus,

Thank you for your response. 

My objective is to send multiple streams of data. For example a transmitter to use two different streams to talk to two receivers. I was thinking something similar to Frequency Division Multiplexing, where each stream is represented using a different sub channel.

Thank you,

Damindra

--

Damindra Savithri Bandara,

Ph.D. in Information Technology (Candidate)
George Mason University,
Fairfax,
Virginia

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Damindra Savithri Bandara,

Ph.D. in Information Technology (Candidate)
George Mason University,
Fairfax,
Virginia

--

Damindra Savithri Bandara,

Ph.D. in Information Technology (Candidate)
George Mason University,
Fairfax,
Virginia