The capacity region of the discrete memoryless interference channel with strong interference
IEEE Transactions on Information Theory
Elements of information theory
Elements of information theory
Information Theory: Coding Theorems for Discrete Memoryless Systems
Information Theory: Coding Theorems for Discrete Memoryless Systems
Codes with the identifiable parent property and the multiple-access channel
General Theory of Information Transfer and Combinatorics
Outer bounds on the capacity of Gaussian interference channels
IEEE Transactions on Information Theory
On achievable rate regions for the Gaussian interference channel
IEEE Transactions on Information Theory
On The Han–Kobayashi Region for theInterference Channel
IEEE Transactions on Information Theory
The Capacity Region of a Class of Discrete Degraded Interference Channels
IEEE Transactions on Information Theory
Gaussian Interference Channel Capacity to Within One Bit
IEEE Transactions on Information Theory
Spectrum sharing games on the interference channel
GameNets'09 Proceedings of the First ICST international conference on Game Theory for Networks
Inter-operator spectrum sharing from a game theoretical perspective
EURASIP Journal on Advances in Signal Processing - Special issue on dynamic spectrum access for wireless networking
Interference channels with correlated receiver side information
IEEE Transactions on Information Theory
Hi-index | 754.90 |
We define a class of Z-interference channels for which we obtain a new upper bound on the capacity region. The bound exploits a technique first introduced by Körner and Marton. A channel in this class has the property that, for the transmitter-receiver pair that suffers from interference, the conditional output entropy at the receiver is invariant with respect to the transmitted codewords. We compare the new capacity region upper bound with the Han/Kobayashi achievable rate region for interference channels. This comparison shows that our bound is tight in some cases, thereby yielding specific points on the capacity region as well as sum capacity for certain Z-interference channels. In particular, this result can be used as an alternate method to obtain sum capacity of Gaussian Z-interference channels. We then apply an additional restriction on our channel class: the transmitter-receiver pair that suffers from interference achieves its maximum output entropy with a single input distribution irrespective of the interference distribution. For these channels, we show that our new capacity region upper bound coincides with the Han/Kobayashi achievable rate region, which is therefore capacity-achieving. In particular, for these channels superposition encoding with partial decoding is shown to be optimal and a single-letter characterization for the capacity region is obtained.