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Interference is regarded as one of the major limitations in achieving the high date rates as required by the next generation of wireless networks (5G). One way of dealing with interference is using a relay. For instance, the deployment of a relay in an interference channel (IC) can improve the rate performance. However, this might require complicated decoding processes at the receivers in general...
In this paper, a realization of an FFT based channel sounding technique and resulting channel functions depending on time, frequency and delay are presented. Practical measurements and computer simulations can provide useful information for wirelress communication system designs.
The interference relay channel (IRC) under strong interference is considered. A high-signal-to-noise ratio (SNR) generalized degrees of freedom (GDoF) characterization of the capacity is obtained. To this end, a new GDoF upper bound is derived based on a genie-aided approach. The achievability of the GDoF is based on cooperative interference neutralization. It turns out that the relay increases the...
The interference relay channel is considered as communication theoretic model for performance analysis of cell edge users in the presence of interference. As the directed links to those users are weak, a relay station is deployed which utilizes both the forward links to the destinations and out-of-band feedback links to the sources for efficient interference management. Different interference management...
The effect of synchronization errors on the performance of a cooperative MIMO scheme that uses the Alamouti space-time code is studied in this paper. The focus is on finding a lower bound of the received Signal to Interference and Noise Ratio (SINR). The synchronization error, caused by the distributed nature of the scheme, is considered as inaccurate channel state information, which is modeled as...
The focus of this article is on analyzing the impact of the number of hops and the number of transmit and receive antennas, at the relay nodes, on the performance of multihop networks. The vision of future wireless networks includes a greater role for ubiquitous ad hoc networks based on multihop transmissions between machines and general mobile devices carried around by users. With this in mind, the...
Ad-hoc networks that support multi-hopping can provide a range of solutions for range-limited sensor and machine-to-machine networks. However such networks have their own set of implementation and performance issues. Clustering helps in organizing the networks and providing a backbone for routing data packets over multi-hop links. However multi-hopping itself can cause a loss in performance compared...
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