Title :
On the Han-Kobayashi achievable region for Gaussian interference channels
Author :
Tuninetti, Daniela ; Weng, Yang
Author_Institution :
Univ. of Illinois at Chicago, Chicago, IL
Abstract :
This work analyzes a particular achievable region for Gaussian interference channels (IFC) derived from the general Han-Kobayashi region. By reformulating the Han-Kobayashi achievable region as the sum of two sets, we characterize the maximum achievable sum-rate with Gaussian inputs and without time-sharing in closed from for any channel parameter. We then show that the computed sum-rate meets the upper bound by Kramer for any IFC with mixed interference, and not only for IFC with strong interference. We then show that for a certain subclass of IFCs with mixed interference, the capacity region contains a line segment of slope -1 of which we characterize the extreme points in term of the power allocation among private and common messages.
Keywords :
Gaussian channels; channel allocation; channel capacity; Gaussian input; Gaussian interference channel; Han-Kobayashi achievable region; power allocation; Capacity planning; Decoding; Degradation; Error probability; Interference channels; Network address translation; Time sharing computer systems; Transmitters; Upper bound;
Conference_Titel :
Information Theory, 2008. ISIT 2008. IEEE International Symposium on
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-2256-2
Electronic_ISBN :
978-1-4244-2257-9
DOI :
10.1109/ISIT.2008.4594984
