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Important Wireless Communication Terms | Page 5


 

Channel Input Response (CIR): We often calculate a transmitted signal's mean and standard deviation to understand the channel impulse response or CIR. We need to understand CIR to retrieve desired info from a transmitted signal. Read more ...

RMS delay spread & Doppler shift: For wireless communication, there are also some more factors to consider, such as Doppler shift, RMS delay spread, and so on. Wireless research necessitates statistical knowledge. Read more ...

Pathloss: read more ...

Gaussian Noise: CIR are not predefined in this case, but they do follow specific patterns, such as Gaussian random variables, poison distributions, and so forth. Read more ...

Frequency: a parameter denotes the carrier frequency in KHz, MHz, GHz, etc. Read more ...

The bandwidth of Channel: Another term that comes up regularly in wireless communications is bandwidth. We call it a channel's capacity in plain English. "bandwidth" refers to the amount of data sent between the transmitter and the receiver in a given period. The fundamental distinction between several evolutions of G's in telecom is based on bandwidth availability and powerful modulation techniques. Read more ...

BER and SER

'BER' is the abbreviation of bit error rate, and 'SER' is the abbreviation for symbol error rate. We often mention 'BER vs. SNR' graphs to investigate the reliability of a communication system.

Distance Range / Coverage range: a parameter denotes a cell tower's distance range/signal coverage range. Two options. Read more ...

Scenario: Three possibilities apply: "UMi," "UMa," and "RMa." The area covered by UMi is relatively limited. It has a range of 100 to 200 meters. When Uma is 200 meters to 2 kilometers long (approx). In the RMa scenario, signals travel up to a few kilometers. Read more ...

Environment: a parameter denotes the climate, either line-of-sight (LOS) or non-line-of-sight (NLOS). Read More ...

TX Power (dBm): a parameter denotes the transmit power in dBm. You may be surprised that mobile reception power for LTE service ranges from -44 dBm to -140 dBm (approx.). Read more ...

Base Station Height (m): This parameter will be a hot cake as increased frequency requires a small antenna. In general, antenna height ranges from 10 to 150. read more ...

Barometric Pressure: a parameter denotes the barometric Pressure in the bar used in evaluating propagation path loss induced by dry air. The typical value is 1013.25 mbar (millibar) (i.e., nominal for sea level) and may range from 10−5 to 1013.25 (mbar).

Humidity: an editable parameter denotes the relative humidity in percentage used in evaluating propagation path loss induced by vapor. The default value is 50 (%) and can be set to any number between 0 and 100 (%).

Temperature: a parameter denotes the temperature in degrees Celsius used in evaluating propagation path loss induced by haze/fog. The typical value is 20 (◦C) and may range from -100 to 50 (◦C).

Rain Rate: a parameter denotes the rain rate in mm/hr used in evaluating propagation path loss induced by rain. The default value is 0 (mm/hr), and the typical range is 0 to 150 (mm/hr).

Polarization: a parameter denotes the polarization relation between the TX and RX antennas or antenna arrays. They may be Co-Pol (co-polarization) or X-Pol (cross-polarization).

Foliage Loss: a parameter that indicates whether or not foliage loss will be considered in the simulation. The default setting is No (which implies foliage loss will not be considered) and can be used according to the environment (which means foliage loss will be considered).

Foliage Attenuation: a parameter denotes the propagation loss induced by foliage in dB/m. 

TX & RX Array Type denotes the TX & RX antenna array type. They are generally ULA (uniform linear array) or URA (constant rectangular array).

Several TX & RX Antenna Elements Nt & Nr: This parameter denotes the array's total number of TX or TX antenna elements.

TX & RX Antenna Spacing (in wavelength): Antenna Spacing is the spacing between adjacent TX or RX antennas in the array regarding the carrier wavelength. The traditional value is 0.5.

AOA & AOD: Angle of arrival (AOA) and angle of departure (AOD) refer to the pitch the signal ray creates with the antenna boresight during either the transmission or reception of the signal.

Azimuth & Elevation angles: The vertical angular range of a signal is measured by elevation angle, whereas the horizontal angular content is measured by azimuth angle.

Beamforming: read more …

HPBW (degrees):

#beamforming

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