Estimation of MIMO Channel Capacity from Phase-Noise Impaired Measurements

Troels Pedersen, Xuefeng Yin, Bernard H. Fleury
2008 IEEE GLOBECOM 2008 - 2008 IEEE Global Telecommunications Conference  
Due to the significantly reduced cost and effort for system calibration time-division multiplexing (TDM) is a commonly used technique to switch between the transmit and receive antennas in multiple-input multiple-output (MIMO) radio channel sounding. Nonetheless, Baum et al. [1], [2] have shown that phase noise of the transmitter and receiver local oscillators, when it is assumed to be a white Gaussian random process, can cause large errors of the estimated channel capacity of a low-rank MIMO
more » ... f a low-rank MIMO channel when the standard channel matrix estimator is used. Experimental evidence shows that consecutive phase noise samples affecting measurement samples collected with real TDM-MIMO channel sounders are correlated. In this contribution a capacity estimator that accounts for the phase noise correlation is proposed. The estimator is based on a linear minimum mean square error estimate of the MIMO channel matrix. It is shown by means of Monte Carlo simulations assuming a measurementbased phase noise model, that the MIMO channel capacity can be estimated accurately for signal-to-noise ratios up to about 35 dB. This full text paper was peer reviewed at the direction of IEEE Communications Society subject matter experts for publication in the IEEE "GLOBECOM" 2008 proceedings. 978-1-4244-2324-8/08/$25.00
doi:10.1109/glocom.2008.ecp.635 dblp:conf/globecom/PedersenYF08 fatcat:jg6kws2p4raa7bemuk7yrwz5ee