Degrees of freedom of two-hop wireless networks: "Everyone gets the entire cake"

We show that fully connected two-hop wireless networks with K sources, K relays and K destinations have K degrees of freedom for almost all values of constant channel coefficients. Our main contribution is a new interference-alignment-based achievability scheme which we call aligned network diagonal...

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Bibliographische Detailangaben
Hauptverfasser:	Shomorony, I., Avestimehr, A. S.
Format:	Tagungsbericht
Sprache:	eng
Schlagworte:	Interference channels Polynomials Relays Silicon Spread spectrum communication Wireless networks
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Beschreibung
Zusammenfassung:	We show that fully connected two-hop wireless networks with K sources, K relays and K destinations have K degrees of freedom for almost all values of constant channel coefficients. Our main contribution is a new interference-alignment-based achievability scheme which we call aligned network diagonalization. This scheme allows the data streams transmitted by the sources to undergo a diagonal linear transformation from the sources to the destinations, thus being received free of interference by their intended destination.
DOI:	10.1109/Allerton.2012.6483459