Capacity of a Class of Modulo-Sum Relay Channels

—This paper characterizes the capacity of a class of modulo additive noise relay channels, in which the relay observes a corrupted version of the noise and has a separate channel to the destination. The capacity is shown to be strictly below the cut-set bound in general and achievable using a quantize-andforward strategy at the relay. This result confirms a conjecture by Ahlswede and Han about the capacity of channels with rate limited state information at the destination for this particular class of channels.

• Type: Journal
• Year: 2007
• Where: CORR
• Authors: Marko Aleksic, Peyman Razaghi, Wei Yu
• Keywords: CORR 2007, Corrupted Version, Education, Modulo Additive Noise, Relay