Title :
Genie-aided outer bounds on the capacity of interference channels
Author_Institution :
Lucent Technol. Bell Labs., Murry Hill, NJ, USA
Abstract :
Two outer bounds on the capacity region of the two-user Gaussian interference channel (IFC) are derived. The idea of the first bound is to let a genie give one of the receivers just enough information to decode both messages. This bound extends to discrete memoryless IFCs and is shown to be equivalent to a bound of Carleial (1983). The second bound follows directly from existing results of Sato (1978) and Costa (1985) but seems not to have been noticed before
Keywords :
Gaussian channels; channel capacity; decoding; discrete systems; interference (signal); memoryless systems; multi-access systems; multiuser channels; source coding; Carleial bound; capacity; discrete memoryless IFC; genie-aided outer bounds; interference channels; outer bounds; receiver; two-user Gaussian interference channel; Capacity planning; Channel capacity; Decoding; Degradation; Error probability; Interference channels; Random variables; Transmitters; Upper bound;
Conference_Titel :
Information Theory, 2001. Proceedings. 2001 IEEE International Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-7123-2
DOI :
10.1109/ISIT.2001.935966
