Spectrum sharing between radars and cellular systems is an emerging area of research. In this paper, we model channel between a seaborne MIMO radar and MIMO cellular system. We model a 2D channel to capture the azimuth aspect of the spectrum sharing scenario. Our channel modeling methodology allows MIMO radar to place accurate nulls in the azimuth location of base stations (BS), thus, protectin...

Interference alignment is a novel technique introduced in [1] that allows for K/2 degrees of freedom in a K-user interference channel. A related work [2] proves the achievability of 4/3 degrees of freedom on the 2 user MIMO-X channel. However, the techniques require Channel State Information (CSI) at transmitter. In [3], it is shown that M(L− 1) log P bits of feedback broadcased by each Rx to a...

This review paper is about the schemes of removing the inter carrier interference in the multiple input multiple output–orthogonal frequency division multiplexing system. The inter carrier interference occurs by the frequency offsets. In the cellular communication system the inter carrier interference arises due to the fully loaded traffic conditions at the cell edge .which is removed by the co...

The two-user Gaussian interference channel (G-IC) is revisited, with a particular focus on practically amenable discrete input signalling and treating as noise (TIN) receivers. corresponding deterministic (D-IC) first investigated coding schemes that can achieve the entire capacity region of D-IC under TIN are proposed. These then systematically translated into multi-layer superposition based p...

We study the capacity of discrete memoryless many-to-one interference channels, i.e., K user interference channels where only one receiver faces interference. For a class of many-to-one interference channels, we identify a noisy interference regime, i.e., a regime where random coding and treating interference as noise achieves sum-capacity. Specializing our results to the Gaussian MIMO many-to-...

Recent advances in the characterization of fundamental limits on interference management in wireless networks and the discovery of new communication schemes on how to handle interference led to a better understanding towards the capacity of such networks. The benefits in terms of achievable rates of powerful schemes handling interference, such as interference alignment, are substantial. However...

Fractional Interference Alignment (FIA) is a transmission scheme which achieves any value between [0,1] for the Symbols transmitted per Antenna per Channel use (SpAC). FIA was designed in [1] specifically for Finite Alphabet (FA) signals, under the constraint that the Minimum Distance (MD) detector is used at all the receivers. Similar to classical interference alignment, the FIA precoder also ...

New Trends in the Design and Analysis of Random Access Algorithms Nieuwe tendensen in het ontwerp en de analyse van random access algoritmes Proefschrift voorgelegd tot het behalen van de graad van doctor in de Wetenschappen aan de Universiteit Antwerpen, te verdedigen door