Interference management with mismatched partial channel state information
نویسندگان
چکیده
We study the fundamental limits of communications over multi-layer wireless networks where each node has only limited knowledge of the channel state information. In particular, we consider the scenario in which each source-destination pair has only enough information to perform optimally when other pairs do not interfere. Beyond that, the only other information available at each node is the global network connectivity. We propose a transmission strategy that solely relies on the available limited knowledge and combines coding with interference avoidance. We show that our proposed strategy goes well beyond the performance of interference avoidance techniques. We present an algebraic framework for the proposed transmission strategy based on which we provide a guarantee of the achievable rate. For several network topologies, we prove the optimality of our proposed strategy by providing information-theoretic outer-bounds.
منابع مشابه
On The Secrecy of the Cognitive Interference Channel with Channel State
In this paper the secrecy problem in the cognitive state-dependent interference channel is considered. In this scenario we have a primary and a cognitive transmitter-receiver pairs. The cognitive transmitter has the message of the primary sender as side information. In addition, the state of the channel is known at the cognitive encoder. Hence, the cognitive encoder uses this side information t...
متن کاملA More General Version of the Costa Theorem
In accordance with the Costa theorem, the interference which is independent of the channel input and known non-causally at the transmitter, does not affect the capacity of the Gaussian channel. In some applications, the known interference depends on the input and hence has some information. In this paper, we study the channel with input dependent interference and prove a capacity theorem that n...
متن کاملAchievable Secrecy Rate Regions of State Dependent Causal Cognitive Interference Channel
In this paper, the secrecy problem in the state dependent causal cognitive interference channel is studied. The channel state is non-causally known at the cognitive encoder. The message of the cognitive encoder must be kept secret from the primary receiver. We use a coding scheme which is a combination of compress-and-forward strategy with Marton coding, Gel’fand-Pinsker coding and Wyner’s wire...
متن کاملFairness-constrained Interference Management without CSIT
Interference channels constitute a major building block in modern multiuser communication systems. Effective interference management necessitates coordination (often through information exchange) among different users so that all transmitters and receivers can dynamically acquire the temporal variations of the channels, and adjust their transmission and interference management policies accordin...
متن کاملAn Interference Management Scheme using Partial CSI for Partially Connected Cellular Networks
We consider a partially connected cellular network where amplify-and-forward relays are deployed in order to help the cell-edge users to suppress the inter-cell interferences in the downlink transmission. The one-way half-duplex relaying protocol is employed. An interference management scheme which achieves interference-free transmissions in the entire network using only partial channel state i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- EURASIP J. Wireless Comm. and Networking
دوره 2017 شماره
صفحات -
تاریخ انتشار 2017