Table 4 Simulation parameters

Cell layout

1 omni-directional cell/1 primary transmitter

# users

100

LTE-A carrier frequency/bandwidth

2 GHz/5 MHz (25 RBs)

Primary carrier frequency/bandwidth

2.3 GHz/5 MHz (25 RBs)

Scheduling

Round Robin (LTE-A band)/MaxCIR [43] (Opportunistic band)

Propagation model

Urban Macro (UMa) [44]

Shadowing model

Log-normal, σ = 4 dB

k

2

x _m

60

Average primary system ON-OFF interval (T_PA)

50 s

Max. number of scheduled users

10

Mobility

Static users

FA/MD Probabilities

0.028/0.01 (target)

Time-bandwidth product (m)

930

Received primary SNR $\begin{array}{c}\left({\bar{\gamma }}_p\right)\end{array}$

8dB

Simulation time

1000 s