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The Various steps to control inter-system interference include: 1. external Filters, add the transmitters and receivers 2. Antenna isolation between transmitters and receivers of victims 3. the distance between transmitters and receivers of victims 4. Reduce transmission power 5. Guard band between operators Step 1 is probably the most common technical solutions. This can have … Read more

Management of external interference from all other sites/sectors improves system performance and capacity. Intervention studies are used to examine areas that have significant peripheral interaction problems. Lighting and intervention studies are analysis to determine what sites/sectors of intervention problem (i.e. determining what sites/sectors may be providing too much interference in the field or sites/sectors that … Read more

LTE is designed to operate in environments where there are peripheral interventions. Link performance degrades as the C/I (i.e. Carrier interference ratio) is reduced, however, it may be acceptable in places with zero or negative C/i. every site and sector LTE systems operating on the same channel so that they can receive interference from all … Read more

LTE sites deployed by using 3 sector. Each sector operates on the same carrier frequency. Nomenclature for this reuse pattern is 1 x 3 x 1. This range of frequency reuse represents a number of sites in a template re-use, the number of sectors in each site, and the number of channels on the site. … Read more

What is smart antenna? Smart antennas are antenna arrays with intelligent signal processing algorithms that identify spatial signal signatures, such as the direction of arrival of the signal, and calculate the following beamforming vectors and locate the beam antenna on the mobile / target. Why Need of Invent Smart antenna? At the beginning of wireless networks … Read more

A couple of differences may exist between the CPE and device specifications  the alleged targets. The differences are mainly due to two factors not normally thought of in the design process. • Works in Los scattering • Not optimal positioning of CPE When the RF design it is important to understand the characteristics of the … Read more

Side and back lobes are regions in a template where the “directions” the antenna may be of benefit, except for the maximum rate. System engineer Note these characteristics with downtilting antenna as part Lobe (petal, which appears above the horizon in the vertical model) can lead to interference. Mechanical downtilting antennas will directly affect the … Read more

What is effect of Antenna Beamwidth in LTE The antenna beam width is measured in degrees between half power points ( -3 DB) compared to the main axis of the petals of the antenna. -3 DB point of reference power (DBM) or voltage (dBv). Beamwidth is expressed in terms of a horizontal (Azimuth) and vertical … Read more

Definition of Front to Back Ratio for LTE antenna Front to back ratio is an important characteristic of directional antenna antenna. Is the ratio of power radiated from a corner with maximum radiation radiation levels at 180 degrees (the back of) from that point. Front to back the ratio is usually expressed in terms of … Read more