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The main difference lies in decoding partial common streams for two-users.
The cost of RSMA comes with a slightly higher encoding complexity since private and common streams need to be encoded.
After that, user-k decodes its group common stream (s_{mathcal {K}_{g}}) by treating other group common streams and 1-order private streams as noise.
However, RSMA comes with a slightly higher encoding complexity than SDMA and NOMA due to the encoding of the common streams on top of the private streams.
In 2-layer HRS, the intra-group interference is mitigated using the intra-group common streams s12 and s34, and the inter-group interference is mitigated using the inter-group common stream s1234.
Similar(55)
The drawback to the more common streamed video images, though, is that after being squeezed to pass through a phone line, the streamed images are tiny, blurred and washed out by the time they arrive on the computer screen.
Only the 4-order common stream s1234 and 1-order private streams are active.
Hence, s12 is a common stream required to be decoded by both users.
s12 is the partial common stream intended for user-1 and user-2.
No power is allocated to the inter-group common stream s1234.
The common stream (s_{mathcal {K}}) is shared by all the users.
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