On Thu, Apr 4, 2013 at 12:45 PM, Manu T S <[email protected]> wrote:
> Hi Everyone, > > I need help regarding a problem. > > It's a Multiple Access Channel problem but one of the source is offset by > half a symbol period. > > ######################################################## > source1 ---> bytes_to_chunks(1) ----> chunks_to_symbol --- > > | > > ---> black_box ---> > > | > source2 ---> bytes_to_chunks(1) ----> chunks_to_symbol --- > ######################################################## > > I want to add these to outputs such that the the symbol corresponding to > souce2 falls between two symbols of source1. > > There will be RRC waveform corresponding to every bit out of the source. > The RRC waveform corresponding to a bit in source2 should fall between RRC > waveform corresponding to 2 bits of source1 ( preferably at the midpoint ). > > I guess I can not do a streams to stream converter, before RRC, because > what that would give me a channel with twice the bandwidth of a single > channel. > > Should I work on a new RRC filter block with 2 inputs or is there any > other way to do this? > > New ideas to achieve this is also welcome. > > -- > Manu T S > > Unless I'm misunderstanding it sounds like you want to interleave bytes. http://gnuradio.org/doc/sphinx/gr/slicedice_blk.html?highlight=interleave#gnuradio.gr.interleave Available in GRC Stream Conversions>Interleave -nw
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