Interference alignment schemes for k-user interference channel based on manifold optimization
نویسندگان
چکیده
منابع مشابه
Partial Interference Alignment for K-user MIMO Interference Channels
In this paper, we consider a Partial Interference Alignment and Interference Detection (PIAID) design for K-user quasi-static MIMO interference channels with discrete constellation inputs. Each transmitter has M antennas and transmits L independent data streams to the desired receiver with N receive antennas. We focus on the case where not all K − 1 interfering transmitters can be aligned at ev...
متن کاملInterference Alignment for the K-user Interference Channel with Imperfect CSI
In this paper we explore the information-theoretic aspects of interference alignment and its relation to channel state information (CSI). For the K−user interference channel using different changing patterns between different users, we propose several methods to align some parts of interferences and to increase what is achieved by time sharing method. For more practical case when all the channe...
متن کاملInterference Alignment and the Degrees of Freedom for the K User Interference Channel
While the best known outerbound for the K user interference channel states that there cannot be more than K/2 degrees of freedom, it has been conjectured that in general the constant interference channel with any number of users has only one degree of freedom. In this paper, we explore the spatial degrees of freedom per orthogonal time and frequency dimension for the K user wireless interferenc...
متن کاملInterference Alignment and Degrees of Freedom of the K-User Interference Channel
For the fully connected K user wireless interference channel where the channel coefficients are time-varying and are drawn from a continuous distribution, the sum capacity is characterized as C(SNR) = K 2 log(SNR) + o(log(SNR)). Thus, the K user time-varying interference channel almost surely has K=2 degrees of freedom. Achievability is based on the idea of interference alignment. Examples are ...
متن کاملInterference alignment for the MIMO interference channel
We study vector space interference alignment for the MIMO interference channel with no time or frequency diversity. We prove both necessary and sufficient conditions for alignment. In particular, we characterize the feasibility of alignment for the symmetric three-user channel where all transmitters have M antennas and all receivers have N antennas, as well as feasibility of alignment for the f...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EURASIP Journal on Wireless Communications and Networking
سال: 2019
ISSN: 1687-1499
DOI: 10.1186/s13638-019-1520-3