TY - GEN

T1 - MIMO channels in the low SNR regime

T2 - 2004 IEEE Information Theory Workshop - Proceedings, ITW

AU - Wu, Xinzhou

AU - Srikant, Rayadurgam

PY - 2004

Y1 - 2004

N2 - We consider non-coherent MEMO fading channels and characterize the reliability function in the low-SNR regime as a function of the number of transmit and receive antennas. We assume no CSI is available at the transmitter or the receiver. For the case when the fading matrix H has independent entries, we show that the number of transmit antennas plays a key role in reducing the peakiness in the input signal required to achieve the optimal error exponent for a given communication rate. Further, by considering a correlated channel model, we show that the maximum performance gain (in terms of the error exponent and communication rate) is achieved when the entries of the channel fading matrix are fully correlated.

AB - We consider non-coherent MEMO fading channels and characterize the reliability function in the low-SNR regime as a function of the number of transmit and receive antennas. We assume no CSI is available at the transmitter or the receiver. For the case when the fading matrix H has independent entries, we show that the number of transmit antennas plays a key role in reducing the peakiness in the input signal required to achieve the optimal error exponent for a given communication rate. Further, by considering a correlated channel model, we show that the maximum performance gain (in terms of the error exponent and communication rate) is achieved when the entries of the channel fading matrix are fully correlated.

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M3 - Conference contribution

AN - SCOPUS:19544370324

SN - 0780387201

T3 - 2004 IEEE Information Theory Workshop - Proceedings, ITW

SP - 428

EP - 433

BT - 2004 IEEE Information Theory Workshop - Proceedings, ITW

Y2 - 24 October 2004 through 29 October 2004

ER -