Title :
Feasibility conditions of interference alignment via two orthogonal subcarriers
Author :
Dierks, Stefan ; Kramer, Gerhard ; Zirwas, Wolfgang
Author_Institution :
Inst. for Commun. Eng., Tech. Univ. Munchen, Munich, Germany
Abstract :
Conditions are derived on the interference channel with single-antenna nodes to achieve maximal degrees-of-freedom with only two symbol extensions. The conditions for line-of-sight channels involve choosing only the spacing between two subcarriers of an orthogonal frequency division multiplexing (OFDM) scheme. For 3 user pairs an upper bound on the sum-rate of interference alignment is approached arbitrarily closely.
Keywords :
OFDM modulation; interference (signal); telecommunication channels; OFDM scheme; interference channel alignment; line-of-sight channel; maximal degrees-of-freedom; orthogonal frequency division multiplexing scheme; orthogonal subcarrier; single-antenna node; Delays; Equations; Interference; Noise; OFDM; Receivers; Upper bound;
Conference_Titel :
Information Theory Proceedings (ISIT), 2013 IEEE International Symposium on
Conference_Location :
Istanbul
DOI :
10.1109/ISIT.2013.6620292
