NDLI: Achievable rate regions for many-to-one Gaussian interference channel with a fusion centre

Content Provider	IET Digital Library
Author	Baianifar, Mahdi Behroozi, Hamid
Abstract	This paper considers a many-to-one Gaussian interference channel with a fusion centre (FC) where there is a K -user interference channel in which only one relay (receiver) faces interference while the remaining K-1 receivers are interference free. All the relays communicate information about their observed sequence to the FC through noiseless links at communication rate R 0. First, by analysing traditional relaying schemes, i.e., Decode and Forward, Compress and Forward and Compute and Forward, three rate-regions for this setting are derived. Then, based on nested lattice codes, a new achievable rate-region is provided. Based on the proposed scheme, one can design a transmission scheme that can recover both integer and non-integer linear combination of messages. Numerical examples show that if channel gains are integer, the proposed scheme performs similarly to the compute-and-forward scheme. In the case of non-integer channel gains, the proposed scheme outperforms other relaying schemes at high signal-to-noise ratios. Finally, it is shown that if the channel gains are larger than one and if the rate of each relay-to-FC link equals to the capacity of an AWGN channel, then the proposed scheme can achieve the capacity region in high SNR regime.
Starting Page	880
Ending Page	887
Page Count	8
ISSN	17518628
Volume Number	9
e-ISSN	17518636
Issue Number	Issue 6, Apr (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/9/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2014.0590
Journal	IET Communications
Publisher Date	2015-02-26
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Additive White Gaussian Noise Channel AWGN Channel Code Compress-and-forward Compute-and-forward Decode And Forward Communication Decode-and-forward Fusion Centre Gaussian Channel Gaussian Relay Network K-user IC K−1 Receivers Many-to-one Gaussian Interference Channel Message Sequence Nested Lattice Code Noiseless Link Radio Link And Equipment Radio Receiver Rate Region Receiver Relay-to-FC Link Signal to Noise Ratio SNR Regime Transmission Scheme
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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