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In this paper, the authors study single transceiver passive RFID networks by modeling the underlying physical system as a special cascade of a certain BroadCast Channel (BCC) and a multiple access channel (MAC), using a "Nested Codebook" structure in between. The particular application differentiates this communication setup from an ordinary cascade of a BCC and a MAC, and requires certain structures such as "Nested Codebooks", impurity channels or additional power constraints. They investigate this problem both for discrete alphabets, where they characterize the achievable rate region, as well as for continuous alphabets with additive Gaussian noise, where they provide the capacity region.
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