METHOD FOR MODELING VISIBLE CLUSTERS AND NON-STATIONARITIES IN XL-MIMO SYSTEMS

1 . Method A method for modeling visible clusters and non-stationarities in XL-MIMO systems, the method comprising:

configuring a plurality of transmit antennas to each represent an in-phase spatial constellation symbol within an in-phase spatial constellation, and a quadrature spatial constellation symbol within a quadrature spatial constellation,

mapping source data to the in-phase spatial constellation symbols and the quadrature spatial constellation symbols represented by the plurality of transmit antennas, wherein the Matérn-cluster point process, which models randomly located clusters within a given area, defines the area where antenna arrays are embedded.

2 . The method of claim 1 characterized by a modification to the iterative shrinkage-thresholding algorithm (ISTA) via boxing with range limiting and hard-thresholding is proceeded.

3 . The method of claim 1 , using the boxed-hard iterative shrinkage-thresholding algorithm (ISTA), a greedy selection of the positions of the antennas index and the symbol estimates, and their independent decoding of the corresponding antenna modulated and symbol modulated bits is determined.

4 . The method of claim 3 , wherein process working parallel to the greedy detections, to ensure valid estimates of the index vectors from the given finite set of index vectors are produced at the output of the method, and to apply interference cancellation with the confirmed values,

while keeping track of which indices have been retrieved from the greedy selections, before every iteration a check is performed whether from the currently decoded indices, a final confirmation can be made,

if the final confirmation cannot be made, remove the interference by the previous greedy selection and the next iteration is proceeded.

5 . A receiver of a communication system having a processor, volatile and/or non-volatile memory, at least one interface adapted to receive a signal in an communication channel, wherein the non-volatile memory stores computer program instructions which, when executed by the microprocessor, configure the receiver to perform operations comprising:

configuring a plurality of transmit antennas to each represent an in-phase spatial constellation symbol within an in-phase spatial constellation, and a quadrature spatial constellation symbol within a quadrature spatial constellation,

mapping source data to the in-phase spatial constellation symbols and the quadrature spatial constellation symbols represented by the plurality of transmit antennas, wherein the Matérn-cluster point process, which models randomly located clusters within a given area, defines the area where antenna arrays are embedded.

6 . (canceled)

7 . (canceled)

8 . The receiver of claim 5 characterized by a modification to the iterative shrinkage-thresholding algorithm (ISTA) via boxing with range limiting and hard-thresholding is proceeded.

9 . The receiver of claim 5 , using the boxed-hard iterative shrinkage-thresholding algorithm (ISTA), a greedy selection of the positions of the antennas index and the symbol estimates, and their independent decoding of the corresponding antenna modulated and symbol modulated bits is determined.

10 . The receiver of claim 9 , wherein process working parallel to the greedy detections, to ensure valid estimates of the index vectors from the given finite set of index vectors are produced at the output of the method, and to apply interference cancellation with the confirmed values,

while keeping track of which indices have been retrieved from the greedy selections, before every iteration a check is performed whether from the currently decoded indices, a final confirmation can be made,

if the final confirmation cannot be made, remove the interference by the previous greedy selection and the next iteration is proceeded.