Bit Rate (BR) [Mbit/Sec]
|
|
RF Carrier Frequency (f)
[MHz]
|
|
PN Sequence Length
|
|
Required SNR @ Detector
For BER 10-6 Befor
FEC [dB]
|
|
FEC Codding Gain (CG) [dB]
|
|
Noise Figure Of The
Receiver
(NF) [dB]
|
|
FEC Rate (FECR)
{Netto/Brutto Bit Rate}
|
|
Temperature [°C] {17°C =
290°K}
|
|
RX Antenna Gain (RXAG)
[dB]
|
|
Required Gain Margin (GM)
[dB]
|
|
TX Antenna Gain (TXAG)
[dB]
|
|
Required Distance [KM]
|
|
TX Output Power (TXOP) [W]
|
|
Required Distance [NM]
|
|
Modulation Type (MT)
|
QPSK BPSK GMSK FSK/FM
(Modulation Index = 0.7)
|
|
RF
Bandwidth (BW) [MHz]
|
|
=
BR/FECR*PN*{1: QPSK & GMSK}{2: BPSK}{1.4: FSK/FM}
|
Required
Path Loss [dB]
|
|
=
20*Log(4*pi*d*f/c)
|
Processing
Gain (PG) [dB]
|
|
=
10*Log(PN*0.88)
|
Minimum
Discernible Signal (MDS) [dBm]
|
|
= NF +
10*Log(k*T*BW) - PG + 30
|
Minimum
Receivable Signal (MRS) [dBm]
|
|
= MDS + SNR +
GM - CG |
Available
Path Loss (APS) [dB]
|
|
=
10*Log(TXOP) + 30 + TXAG + RXAG -
MRS
|
Maximum
Available Distance [KM]
|
|
=
10^(0.05*(APS - 20*Log(4*pi*f/c)))
|
Maximum
Available Distance [NM]
|
|
=
10^(0.05*(APS - 20*Log(4*pi*f/c))) |
Basic RF Line Of Sight
Link
Budget Calculator
paratec@paratec-ltd.com 