Demo: Non-classic Interference Alignment for Downlink Cellular Networks

Yasser Fadlallah 1, * Leonardo S. Cardoso 1 Jean-Marie Gorce 1
* Corresponding author
1 SOCRATE - Software and Cognitive radio for telecommunications
Inria Grenoble - Rhône-Alpes, CITI - CITI Centre of Innovation in Telecommunications and Integration of services
Abstract : Our demo aims at proving the concept of a recent proposed interference management scheme that reduces the inter-cell interference in downlink without complex coordination, known as non-classic interference alignment (IA) scheme. We assume a case where one main Base Station (BS) needs to serve three users equipments (UE) while another BS is causing interference. The primary goal is to construct the alignment scheme ; i.e. each UE estimates the main and interfered channel coefficients, calculates the optimal interference free directions dropped by the interfering BS and feeds them back to the main BS which in turn applies a scheduling to select the best free inter-cell interference directions. Once the scheme is build, we are able to measure the total capacity of the downlink interference channel. We run the scheme in CorteXlab ; a controlled hardware facility located in Lyon, France with remotely programmable radios and multi-node processing capabilities, and we illustrate the achievable capacity gain for different channel realizations.
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Submitted on : Wednesday, November 4, 2015 - 11:21:37 AM
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  • HAL Id : hal-01219455, version 1
  • ARXIV : 1511.01276

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Yasser Fadlallah, Leonardo S. Cardoso, Jean-Marie Gorce. Demo: Non-classic Interference Alignment for Downlink Cellular Networks. Joint NEWCOM/COST Workshop on Wireless Communications JNCW 2015, Oct 2015, Barcelone, Spain. ⟨hal-01219455⟩

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