What are some of the important questions and answers for Transmission and Radio Network Telecom Engineer in this field?
Here are the most important questions and answers a Telecom Transmission and Radio Network Engineer needs to know:
● What is Microwave link/antenna?
Microwave antenna is a physical transmission devices used to broadcast microwave transmission between two or more locations or base stations.
● What is BBU?
Baseband Unit manages the whole base station, including operating maintenance as will as signal processing.
● What is RRU “Remote Radio Unit”?
Interfaces with Antenna in one side and with BBU in the another side.
○Converts the RF signal into data signal and the vice versa.
○Filtering and amplification of RF signal.
○Decides the coverage of the power capability.
● What is the RF Antenna?
○RF antenna interfaces with cell phone wirelessly and transmits/receivers RF signals
○Decides that shape of the coverage
● What does target RSL mean?
This means the received signal level, which is the power value to be received form the microwave link
● What is the feeder cable?
It is a copper cable used to send and receive the signal and transmit it form the cabinet to the antenna
● What is the IF Cable?
It is also a copper cable, but it is used to transmit microwave signals+the power form the modem cards aligned with the ODU
● What does the word alignment mean?
This means adjusting the microwave links, so that the best signal is received
● What does the word XPIC mean?
Cancellation of cross-polarization interference this means sending and receiving data on the same frequency, but using two types of polarization, which are vertical and horizontal to double the speed.
● What is the Signal Strength (SS)?
Signal strength is a measurement that expresses the quality or value of a particular signal at a certain distance from its source
● What is the word SNR?
Signal-to-noise ratio, often written S/N or SNR, is a measure of the strength of the desired signal relative to background noise that affects it (undesired signal).
● What does it mean Rx Sensitivity?
Measurement of the weakest signal that a wireless receiver (UE) can receive to decode the data and get the content of it. Received sensitivity is affected greatly by a number of factors such as location, place of the the terminal
● What is Diversity?
Diversity scheme refers to a method for improving the reliability of a message signal by using two or more communication channels with different characteristics
● What is MIMO?
Stand for Multiple-Input Multiple-Output, it’s a wireless technology that increases the data capacity of a RF radio by using multiple transmitting and receiving antennas
● What is Fading?
Fading refers to the attenuation of the transmitted signal power due to various variables during wireless propagation. These variables can be atmospheric conditions such as rainfall and lightning, geographical position, time, radio frequency etc.
● What is the Interference?
Interference refers to the effect of unwanted signals or noise on the reception of a wanted signal.