sentence: Using the DPSA for the STPAP , the received signal model for the n-th block can be denoted as ( 8) X( n ) = ∑ l = 1LAl ( θ l , φ l , γ l , η l ) sl ( n ) + ∑ q = 1QAq ( θ q , φ q , γ q , η q ) sq ( n ) + G ( n ) , where sl ( n ) =[ sl ( t ) , ⋯