Final answer:
A link budget accounts for losses and gains in a wireless communications system to determine if the connection will be sufficient. The student's question involved parameters like transmitter power, antenna gains, and losses which would all be included in the budget calculation; however, we can't draw the budget without visual tools. It involves arithmetic operations on all dB values to meet the minimum required power level
Step-by-step explanation:
The student asked about drawing a link budget for a wireless communications system with given parameters such as transmitter power, transmitter cable loss, minimum required received power, transmitting antenna gain, receiving antenna gain, and carrier frequency. A link budget is a calculation involving various losses and gains from the transmitter to the receiver and is used to determine if a communication link is viable with the given parameters. Unfortunately, without the means to show visuals or images, we cannot draw the link budget here, but we can explain how to calculate it.
To calculate the link budget, you would subtract any losses from gains and the initial power to see if the net result meets the minimum required received power. For the given system:
- Transmitter power: 23 dBm
- Transmitter Cable Loss: 2 dB (subtracted since this is a loss)
- Transmitting Antenna Gain: 12 dBd (added to the power)
- Receiving Antenna Gain: 0 dBi (no change to the power)
The path loss would also need to be calculated, which is dependent on the carrier frequency, the distance between the transmitter and receiver, and any environment-specific losses.
Note that dBd refers to decibels relative to a dipole antenna, whereas dBi is relative to an isotropic antenna; dBm is a power ratio in decibels relative to one milliwatt.