TY - GEN
T1 - On the capacity of the MIMO cognitive interference channel
AU - Rini, Stefano
AU - Goldsmith, Andrea
PY - 2013
Y1 - 2013
N2 - The cognitive interference channel is a variation of the classical interference channel in which one of the transmitters, the cognitive transmitter, has full and a priori knowledge of the message of the other user, the primary user. This additional knowledge is termed cognition and idealizes the cognitive transmitter learning the messages of the primary user by overhearing its transmissions over a wireless channel. This paper studies the multiple-input multiple-output cognitive interference channel and derives inner and outer bounds for the capacity of this channel model as well as approximate characterizations of the capacity region. In particular, it is shown that capacity can be achieved to within an additive gap which depends on the number of antennas at the cognitive decoder and to within a constant multiplicative factor of two.
AB - The cognitive interference channel is a variation of the classical interference channel in which one of the transmitters, the cognitive transmitter, has full and a priori knowledge of the message of the other user, the primary user. This additional knowledge is termed cognition and idealizes the cognitive transmitter learning the messages of the primary user by overhearing its transmissions over a wireless channel. This paper studies the multiple-input multiple-output cognitive interference channel and derives inner and outer bounds for the capacity of this channel model as well as approximate characterizations of the capacity region. In particular, it is shown that capacity can be achieved to within an additive gap which depends on the number of antennas at the cognitive decoder and to within a constant multiplicative factor of two.
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U2 - 10.1109/ISIT.2013.6620715
DO - 10.1109/ISIT.2013.6620715
M3 - Conference contribution
AN - SCOPUS:84890377608
SN - 9781479904464
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 2691
EP - 2695
BT - 2013 IEEE International Symposium on Information Theory, ISIT 2013
T2 - 2013 IEEE International Symposium on Information Theory, ISIT 2013
Y2 - 7 July 2013 through 12 July 2013
ER -