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In cellular telephone system, co-channel interference can be decreased by replacing a single omni directional antenna with several directional antennas, each radiating within a smaller area.In sectoring,we keep unchanged cell radius & seek methods to decrease D/R ratio.By D/R ratio,SIR increase so we use directional antennas.
remember D/R is co-channel reuse ratio & SIR is signal to interference ratio
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Does an annimal cell have a cell wall?
No, insect cell has not a cell wall, insect cell has cell membrane. Only plant cell has cell has cell wall.
Is no cell wall a plant cell or an animal cell?
an animal cell DOES NOT have a cell walla plant cell DOES have a cell wall
Cell membrane is what type of cell?
cell membrane is not a type of cell it is part of a cell,it is on the outside around an animal cell
What has a cell wall a nerve cell a leaf cell a cheek cell or a bone cell?
Leaf Cell, only plant cells have cell walls
What Controls what moves in and out of the cell?
Cell membrane
5 ways of increasing the Capacity of cellular system?
Increasing Channel CapacityAdding new channels: Typically, when a system is set up in a region, not all of the channels are used, and growth and expansion can be managed in an orderly fashion by adding new channels.Frequency borrowing: In the simplest case, frequencies are taken from adjacent cells by congested cells. The frequencies can also be assigned to cells dynamically.Cell splitting: In practice, the distribution of traffic and topographic features is not uniform, and this presents opportunities of capacity increase. Cells in areas of high usage can be split into smaller cells.Cell sectoring: With cell sectoring, a cell is divided into a number of wedge-shaped sectors, each with its own set of channels, typically 3 or 6 sectors per cell. Each sector is assigned a separate subset of the cell's channels, and directional antennas at the base station are used to focus on each sector.Microcells: As cells become smaller, antennas move from the tops of tall buildings or hills, to the tops of small buildings or the sides of large buildings, and finally to lamp posts, where they form microcells. Each decrease in cell size is accompanied by a reduction in the radiated power levels from the base stations and the mobile units. Microcells are useful in city streets in congested areas, along highways, and inside large public buildings.By Ratnakanthan
What are the combination of numbers on the left side and a letter on the top of a spreadsheet that addresses a cell called?
A cell address or a cell reference.A cell address or a cell reference.A cell address or a cell reference.A cell address or a cell reference.A cell address or a cell reference.A cell address or a cell reference.A cell address or a cell reference.A cell address or a cell reference.A cell address or a cell reference.A cell address or a cell reference.A cell address or a cell reference.
Does an annimal cell have a cell wall?
No, insect cell has not a cell wall, insect cell has cell membrane. Only plant cell has cell has cell wall.
What makes a nerve cell an animal cell?
the cell is a cell and an animal cell is an animal cell
Is no cell wall a plant cell or an animal cell?
an animal cell DOES NOT have a cell walla plant cell DOES have a cell wall
Cell membrane is what type of cell?
cell membrane is not a type of cell it is part of a cell,it is on the outside around an animal cell
Is a cell a plant and animal cell?
an animal cell has cell membrane a plant cell has cell wall.
What is the cell address of the last cell of the Microsoft Excel 2003?
The cell reference for the last cell in Excel 2003 is cell IV65536.The cell reference for the last cell in Excel 2003 is cell IV65536.The cell reference for the last cell in Excel 2003 is cell IV65536.The cell reference for the last cell in Excel 2003 is cell IV65536.The cell reference for the last cell in Excel 2003 is cell IV65536.The cell reference for the last cell in Excel 2003 is cell IV65536.The cell reference for the last cell in Excel 2003 is cell IV65536.The cell reference for the last cell in Excel 2003 is cell IV65536.The cell reference for the last cell in Excel 2003 is cell IV65536.The cell reference for the last cell in Excel 2003 is cell IV65536.The cell reference for the last cell in Excel 2003 is cell IV65536.
What is the primary boundary of the cell and what is the overall security of the cell?
For an animal cell it is the cell wall. For a plant cell it is the cell membrane. In an animal cell the cell membrane is right inside the cell wall. The cell membrane is known as "The Gatekeeper" and is the main security of the cell.
What part of the cell gives support to the cell?
if its a plant cell its the cell wall..... if its an animal cell its the cell membrane
Does an animal cell have a cell wall and a cell membrane?
An animal cell consists of a cell membrane but not a cell wall.
What the surrounds the cell?
In plant cells, a cell membrane and a cell wall surround the cell to aid in support and protection. In animal cells, only a cell membrane surrounds the cell and controls what substances go in and go out of the cell.
