Fast Tensor-Based Joint Estimation for Time Delay and Angle of Arrival in OFDM System

Table 2

Algorithm steps.

step1:	The tensor EX-Response matrix is constructed according to (26).
step2:	The tensor covariance matrix is constructed based on (30).
step3:	Perform a CPD of , which solves the signal subspaces and , and then the corresponding noise subspaces and are obtained by (33) and (35), respectively. and .
step4:	Proceeded to conduct a 1-D spectrum peak search for to solve the by (34), and a 2-D spectrum peak search for to solve the by (36).