US 12,155,431 B2
Blind signal estimation using structured subspace technique
Abdulmajid Lawal, Dhahran (SA); Karim Abed-Meraim, Dhahran (SA); Qadri Mayyala, Dhahran (SA); Naveed Iqbal, Dhahran (SA); and Azzedine Zerguine, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Mar. 31, 2023, as Appl. No. 18/193,990.
Claims priority of provisional application 63/329,993, filed on Apr. 12, 2022.
Prior Publication US 2023/0327718 A1, Oct. 12, 2023
Int. Cl. H04B 7/0456 (2017.01); H04B 7/0491 (2017.01); H04B 7/08 (2006.01)
CPC H04B 7/0456 (2013.01) [H04B 7/0491 (2013.01); H04B 7/0857 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A blind signal estimation method for single-input multiple-output systems performed by a receiver comprising:
receiving, by two or more receiver antennas of the receiver, an observed signal y(t) comprising an input signal s(t), an additive noise term w(t) and a channel response term h(t);
forming a data matrix Y using the observed signals y(t) from the two or more receiver antennas;
computing a singular value decomposition of the data matrix Y and generating a unitary matrix VH;
generating a unitary matrix VsH using right singular vectors of the unitary matrix VH;
generating a parameter matrix Q using the unitary matrix VsH obtained from the singular value decomposition of the data matrix Y;
forming a Toeplitz signal matrix custom character by multiplying the parameter matrix Q by the unitary matrix VsH; and
estimating the input signal using the Toeplitz signal matrix custom character.