ROC denotes receiver operating characteristic.
The solid triangles, open circle, and dots denote receivers, a scatterer (island), and noise sources, respectively.
The gray square denotes receiver in center, and black square indicates the receiver at eccentric location.
where η(t) denotes receiver noise and s ′(t) stands for a PU signal after propagation effects.
Z k, m ( r u ) = 1 N ∑ n = 0 N - 1 z n, m ( r u ) exp - j 2 π n k ∕ N denotes receiver noise in the frequency domain.
Without loss of generality, we rank all of the variances from σ dn 2 as σ 1 2 ≤ σ 2 2 ≤ ⋯ ≤ σ N 2 and denote the receiver corresponding to σ n 2 as the n th receiver.
where ϕn,l(j) denotes the receiver noise at the node n in receiving the estimate of node l at iteration j and z n, n ( k, j ) = x ̄ n ( k, j ).
where and denote the receiver response vector and the antenna response vector including the cable response, respectively.
Similarly, n j,i (k) denotes the receiver noise at the k th time step in the transmission from the j th node to the i th one.
where contains the channel response for all Tx-Rx pairs over all frequencies forming a group and it is given by (5). is the vector of transmitted symbols with representing the symbol vector transmitted on the th antenna, and denotes the receiver noise.
A multiple access channel (MAC) refers to a channel between multiple independent senders (the data sent by the th sender is typically denoted ) and one receiver (the received data is typically denoted ).
