Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Channel Covariance Estimation in Multiuser Massive Mimo Systems with an Approach Based on Infinite Dimensional Hilbert Spaces
 Institute of Electrical and Electronics Engineers IEEE; IEEE Computer Society; IEEE Signal Processing Society: IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2020. Proceedings : May 48, 2020, Barcelona, Spain Piscataway, NJ: IEEE, 2020 ISBN: 9781509066315 ISBN: 9781509066322 S.51805184 
 International Conference on Acoustics, Speech and Signal Processing (ICASSP) <45, 2020, Barcelona> 

 Englisch 
 Konferenzbeitrag 
 Fraunhofer HHI () 
Abstract
We propose a novel algorithm to estimate the channel covariance matrix of a desired user in multiuser massive MIMO systems. The algorithm uses only knowledge of the array response and rough knowledge of the angular support of the incoming signals, which are assumed to be separated in a welldefined sense. To derive the algorithm, we study interference patterns with realistic models that treat signals as continuous functions in infinite dimensional Hilbert spaces. By doing so, we can avoid common and unnatural simplifications such as the presence of discrete signals, ideal isotropic antennas, and infinitely large antenna arrays. An additional advantage of the proposed algorithm is its computational simplicity: it only requires a single matrixvector multiplication. In some scenarios, simulations show that the estimates obtained with the proposed algorithm are close to those obtained with standard estimation techniques operating in interferencefree and noiseless systems.