RADIO LINKS

Functionality chart
Cellular Expert Radio Links module features

Tasks Features

Site, sector, construction, customer, repeater management:

 Add
 Edit
Network data management  Move
 Copy
 Delete
 Site re-use patterns for nominal planning

Free space path loss: ITU-R P.525-2

Fresnel zone ellipsoids: ITU-R P.526-11
Path clearance: ITU-R P.530-13
Specific attenuation: ITU-R P.676-8 using input from ITU-R P.837-5,
ITU-R P.838-3 and ITU-R P.839-3
Rain attenuation: ITU-R P.530-13
Diffraction algorithms:
 Single knife-edge (ITU-R P.526-11)
 Deygout (ITU-R P.526-11)
 Average (ITU-R P.530-13)
Point-to-point analysis Path loss models:
 Line-of-sight
 Hata
 Diffraction
 Macro Adaptive
 SUI
Reflection analysis
Multipath analysis
Anti-correlation analysis
Antenna height optimization
Reporting

Antenna, feeders, combiners, modulation performance tables,

carriers, radios, spectrum masks management:
 Add
 Edit
Radio equipment data  Copy
management  Delete
 Create/Edit antenna pattern
 Vertical antenna pattern every 1º
 Horizontal antenna pattern every 1º
 3D pattern creation, display, export
 Import/Export of antennas
Tasks Features

Parabolic and sector antenna editors:

 Tabular radiation pattern representation with inplace editing
 Graphical radiation pattern representation in linear and
logarithmic scales
 Modulation performance editor
 Tabular and graphical representations of the BER vs. signal-
to-noise ratio dependencies, approximation by formula
 Defined curves for BPSK, QPSK, DQPSK, M-FSK, M-QAM
modulations
 Carriers list editor
 Frequency plans for simplex and duplex channels
 Tabular and graphical representations of frequency carriers
 Spectrum mask editor
 Spectrum density mask editing
 Automatic mask generation for predefined bandwidth
 Tabular and graphical representations of spectrum masks
 MIMO configuration

Radio link management Creating, editing, deleting, visualization

Point-to-point systems radio relay lines

Point-to-multipoint systems:
 Fixed WiMAX
Radio link budget analysis
 LMDS
 MMDS
 WLL

ITU-T G.821 recommendation targets Parameters: ESR, SESR,

unavailable time ratio; Local grade portion (ITU-R F.697-2) Medium
grade portion (ITU-R F.696-2) High grade portion (ITU-R F.557-4)
ITU-T G.826 recommendation targets Parameters: ESR, SESR,
BBER
National portion (ITU-R F.1189-1):
Radio link performance
 Access network
analysis
 Short haul network
 Long haul network
International portion (ITU-R F.1092-1):
 Terminating countries
 Intermediate countries
ITU-T G.827 recommendation targets Parameters: UATR
Tasks Features

 Interference level prediction

Radio Links interference  Net filter discrimination
analysis  C/I protection ratios for co- and adjacent-channels
 Fade margin loss objectives

Automatic Radio Link Selects the minimum number of carriers required to serve selected
Frequency Planning radio links within given interference threshold

Evaluation of prediction accuracy

Hata model:
 9999 model parameters adjustment
 Macro model parameters adjustment
 Clutter loss offset determination for each type of clutter
Prediction Model tuning
Walfish – Ikegami model tuning
SUI model tuning
Line of sight model:
 One slope model tuning
 Dual slope model tuning

Propagation Models: Basic algorithm: Okumura-Hata equitation Type: Point-to-multipoint

HATA Frequency: ~ 150 MHz - 2 GHz Distance: up to 100 km
Hata Model Parameters:
 Standard (ETR 364, COST 231 and ITU-R P.529-3)
 Macro Model
 9999 Model (Ericsson)
Effective Antenna Height methods:
 Absolute
 Profile
 Average
 Relative
 Slope
Diffraction:
 Single knife-edge (ITU-R P.526-11)
 Deygout (ITU-R P.526-11)
 Spherical Earth (ITU-R P.526-11)
 Average (ITU-R P.530-13)

Basic algorithm: ITU-R P.452-14 Type: Point-to-point and Point-to-

Line of Sight multipoint Frequency: about 700 MHz - 40 GHz Distance: up to 100 -
150 km Percentage of Time: 0.001 to 50. Specific attenuation: ITU-R
P.676-8 using input from ITU-R P.837-5, ITU-R P.838-3 and ITU-R
P.839-3. Diffraction: Deygout method of ITU-R P.526-11 Rain
attenuation: ITU-R P.530-13
Tasks Features

Basic algorithm: COST 231 Model (ETR 364, COST 231 Final
Walfish-Ikegami Report) Type: Point-to-area (multipoint) Frequency: about 800 MHz -
2 GHz Distance: up to 5 km

SUI Basic algorithm: IEEE 802.16 Type: Point-to-area (multipoint)

Frequency: about 2 GHz - 5 GHz Distance: up to 70 km

Nth best servers coverage, number of servers coverage

Best Server calculation Nth best servers field strength coverage

 Automated task processing

Automation  Parallel calculations on multicore processors

 Line of Sight
 Path clearance
Visibility calculation
 Fresnel zone clearance
 Minimum antenna height

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