TY - GEN
T1 - On the usage of antennas in MIMO and MISO interference channels
AU - Kaynia, Mariam
AU - Goldsmith, Andrea J.
AU - Gesbert, David
AU - Øien, Geir E.
PY - 2010
Y1 - 2010
N2 - We investigate the performance of an uncoordinated 2 link MIMO interference channel as a function of the number of antennas and the average channel gains. The channel coefficients are random and uncorrelated, all links undergo Rayleigh fading, and the transmitters have no channel state information. The analysis is done in terms of ergodic capacity and outage probability. For non-asymptotic networks (i.e., when the number of transmit and receive antennas is finite and small), we derive upper and lower bounds to both our performance metrics. Moreover, the particular case of a MISO channel is considered, where exact expressions for the ergodic capacity, distribution of the capacity, and outage probability are derived. It is concluded theoretically, and somewhat surprisingly, that using all transmit antennas is not always optimal. That is, depending on the average channel gains and the requested communication rate, a transmitter should apply its antennas in different ways in order to minimize the outage probability.
AB - We investigate the performance of an uncoordinated 2 link MIMO interference channel as a function of the number of antennas and the average channel gains. The channel coefficients are random and uncorrelated, all links undergo Rayleigh fading, and the transmitters have no channel state information. The analysis is done in terms of ergodic capacity and outage probability. For non-asymptotic networks (i.e., when the number of transmit and receive antennas is finite and small), we derive upper and lower bounds to both our performance metrics. Moreover, the particular case of a MISO channel is considered, where exact expressions for the ergodic capacity, distribution of the capacity, and outage probability are derived. It is concluded theoretically, and somewhat surprisingly, that using all transmit antennas is not always optimal. That is, depending on the average channel gains and the requested communication rate, a transmitter should apply its antennas in different ways in order to minimize the outage probability.
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U2 - 10.1109/SPAWC.2010.5671110
DO - 10.1109/SPAWC.2010.5671110
M3 - Conference contribution
AN - SCOPUS:78751483807
SN - 9781424469901
T3 - IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC
BT - 2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2010
T2 - 2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2010
Y2 - 20 June 2010 through 23 June 2010
ER -