TY - GEN
T1 - Degrees of freedom for the constant MIMO interference channel with CoMP transmission
AU - Wilson, Craig
AU - Veeravalli, Venugopal
PY - 2013
Y1 - 2013
N2 - The multiple-input multiple-output (MIMO) interference channel (IC) is considered with constant channel coefficients, N transmit and receive antennas at each user, and coordinated multipoint (CoMP) transmission, in which each message is jointly transmitted by Mt successive transmitters. It is shown that the degrees of freedom with CoMP transmission using a two stage scheme involving both zero forcing (ZF) and interference alignment (IA) can be significantly greater than without CoMP transmission. In particular, all AT-users can achieve d degrees of freedom almost surely if d ≤ [2N/K-M t] and Mt ≤ K - 2. Additionally, the first M t - 1 users can achieve d1 degrees of freedom and the last K - Mt; 1 users can achieve d2 degrees of freedom almost surely if d2 ≤ [2N/K-Mt], Mt ≤ Κ-2, and d1; (K - Mt; 1)d2 ≤ 2N. Next, the analysis of the constant MIMO IC with CoMP transmission is applied to the development of iterative algorithms to design transmit and receive vectors analogous to those without CoMP transmission. The degrees of freedom analysis is shown through simulations to provide a good guideline for choosing how many beams each user should send.
AB - The multiple-input multiple-output (MIMO) interference channel (IC) is considered with constant channel coefficients, N transmit and receive antennas at each user, and coordinated multipoint (CoMP) transmission, in which each message is jointly transmitted by Mt successive transmitters. It is shown that the degrees of freedom with CoMP transmission using a two stage scheme involving both zero forcing (ZF) and interference alignment (IA) can be significantly greater than without CoMP transmission. In particular, all AT-users can achieve d degrees of freedom almost surely if d ≤ [2N/K-M t] and Mt ≤ K - 2. Additionally, the first M t - 1 users can achieve d1 degrees of freedom and the last K - Mt; 1 users can achieve d2 degrees of freedom almost surely if d2 ≤ [2N/K-Mt], Mt ≤ Κ-2, and d1; (K - Mt; 1)d2 ≤ 2N. Next, the analysis of the constant MIMO IC with CoMP transmission is applied to the development of iterative algorithms to design transmit and receive vectors analogous to those without CoMP transmission. The degrees of freedom analysis is shown through simulations to provide a good guideline for choosing how many beams each user should send.
KW - interference channels
KW - iterative algorithms
KW - throughput
KW - wireless networks
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U2 - 10.1109/ACSSC.2013.6810633
DO - 10.1109/ACSSC.2013.6810633
M3 - Conference contribution
AN - SCOPUS:84901265385
SN - 9781479923908
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 1897
EP - 1901
BT - Conference Record of the 47th Asilomar Conference on Signals, Systems and Computers
PB - IEEE Computer Society
T2 - 2013 47th Asilomar Conference on Signals, Systems and Computers
Y2 - 3 November 2013 through 6 November 2013
ER -