Title :
Degrees of freedom of two-hop wireless networks: “Everyone gets the entire cake”
Author :
Shomorony, Ilan ; Avestimehr, Amir Salman
Author_Institution :
Cornell Univ., Ithaca, NY, USA
Abstract :
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.
Keywords :
radio networks; radiofrequency interference; wireless channels; aligned network diagonalization; constant channel coefficients; data streams; degrees of freedom; diagonal linear transformation; interference-alignment-based achievability scheme; two-hop wireless networks; Interference channels; Polynomials; Relays; Silicon; Spread spectrum communication; Wireless networks;
Conference_Titel :
Communication, Control, and Computing (Allerton), 2012 50th Annual Allerton Conference on
Conference_Location :
Monticello, IL
Print_ISBN :
978-1-4673-4537-8
DOI :
10.1109/Allerton.2012.6483459
