In wireless networks, link strengths are often affected by some topological factors such as propagation path loss, shadowing and inter-cell interference. Thus, different users in the network might experience strengths. this work we consider a K-user asymmetric interference channel, where channel gains of links connected to Receiver k scaled with √{P <sup xmlns:mml="http://www.w3.org/1998/Math/M...

The purpose of this monograph is to introduce up-to-date capacity theorems for the two-user Gaussian interference channel, including both single-antenna and multiple-antenna cases. The monograph starts with the single antenna case and introduces the Han and Kobayashi achievable rate region and its various subregions. Several capacity outer bounds are then presented; these outer bounds, together...

The impact of interference on multiple-input multiple-output (MIMO) systems has recently attracted interest. Most studies of channel estimation and data detection for MIMO systems consider spatially and temporally white interference at the receiver. In this paper, we address channel estimation, interference correlation estimation, and data detection for MIMO systems under both spatially and tem...

In this letter, we present the first characterization for the achievable Degrees-of-Freedom (DoF) by Blind Interference Alignment (BIA) using staggered antenna switching in the K-user Gaussian Interference Channel. In such scheme, each transmitter is equipped with one conventional antenna and each receiver is equipped with one reconfigurable (multi-mode) antenna. Assuming that the channel is kn...

We study the discrete memoryless Z-interference channel (ZIC) where the transmitter of the pair that suffers from interference is cognitive. We first provide upper and lower bounds on the capacity of this channel. We then show that, when the channel of the transmitter-receiver pair that does not face interference is noiseless, the two bounds coincide and therefore yield the capacity region. The...

In this work we revisit the multiplexing gain, or degrees of freedom, of the Gaussian cognitive radio channel. Prior work has shown that the cognitive radio channel attains one degree of freedom, indicating that while cognition significantly improves rates over the interference channel at medium SNR, at high SNR the cognitive channel too is interference-limited. In this work we show that by all...

The degree-of-freedom (DoF) region for a general interference-aligned multi-user multiple-input multiple-output (MIMO) channel is of theoretic importance. Yet, its exact characterization is not available in the literature, due to the lack of an appropriate theoretical framework. A joint space decompositionand-synthesis theory is developed in the paper. The joint decomposition is done on the rec...

Transmitter cooperation enabled by dedicated links with finite capacities allows for a partial message exchange between encoders. After cooperation, each encoder will know a common message partially describing the two original messages, and its own private message containing the information that the encoders were not able to exchange. We consider the interference channel with both private and c...

This paper presents the achievable rate region frontiers for the n−user interference channel when there is no cooperation at the transmit nor at the receive side. The receiver is assumed to treat the interference as additive thermal noise and does not employ multiuser detection. In this case, the rate region frontier for the n−user interference channel is found to be the union of n hyper-surfac...

0140-3664/$ see front matter 2010 Elsevier B.V. A doi:10.1016/j.comcom.2010.10.011 ⇑ Corresponding author. Tel.: +1 517 353 4386. E-mail addresses: [email protected] (Y. Ding) In this article, we survey the latest progress in multi-channel wireless mesh networks, focusing on wireless interference models and channel allocation algorithms with the goal of maximizing the network performance. We...