Title :
On the sum capacity of the Y-channel
Author :
Chaaban, Anas ; Sezgin, Aydin ; Avestimehr, A. Salman
Author_Institution :
Dept. of Digital Commun. Syst., Ruhr-Univ. Bochum, Bochum, Germany
Abstract :
A model where three users communicate with each other via a relay is considered. Users do not receive other users´ signals via a direct link, and thus the relay is essential for their communication. Each user wants to broadcast one message to each other user. The sum-capacity is studied, and upper bounds and lower bounds are given. If all nodes have the same power, the sum-capacity is characterized to within a gap of 2 bits or a factor of 4 for all values of channel coefficients.
Keywords :
channel capacity; decode and forward communication; relays; Y-channel; functional decode-and-forward; message broadcasting; relay; sum capacity; sum-capacity; Additives; Antennas; Bidirectional control; Decoding; Lattices; Relays; Upper bound;
Conference_Titel :
Signals, Systems and Computers (ASILOMAR), 2011 Conference Record of the Forty Fifth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4673-0321-7
DOI :
10.1109/ACSSC.2011.6190407
