Open AccessIntrinsic degrees of freedom for MIMO interference channel
Author(s) -
Bai Xiaojuan
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2013.1403
Subject(s) - degrees of freedom (physics and chemistry) , mimo , interference (communication) , channel (broadcasting) , computer science , electronic engineering , telecommunications , control theory (sociology) , physics , engineering , artificial intelligence , quantum mechanics , control (management)
Intrinsic degrees of freedom (IDoF) which are the measure about the relative transmission ability of a channel from a transmitter to a receiver in the current transmit power at finite signal‐to‐noise power ratio are proposed. According to the IDoF of the subchannel in every dimension of channel space, the number of spatial dimensions allocated to the interferer by the interference avoiding technique, which is no more than the maximum number of subchannels associated with the decreasing IDoF of the transmission channel due to interference in the multiuser multi‐antennas interference channel, is given from an information‐theory perspective.