How do you find the frequency reuse factor?
The number of cells after which a frequency channel can be reused is called as the Frequency reuse factor (R.F). It is given by R. F=1/N, Where N is the cluster size.
What do you mean by frequency reuse factor?
The frequency reuse factor is defined as 1 over the number of cells in the cluster of the system. Valid clusters are those that result in 6 cells with the same frequency of a particular cell located at equal distance from it.
What is the frequency of reuse?
Explanation: Frequency reuse is the process of using the same radio frequencies on radio transmitter sites within a geographic area. They are separated by sufficient distance to cause minimal interference with each other. 5.
What is the frequency reuse factor in CDMA?
Figure 1.10 shows how CDMA systems can reuse the same frequency in each cell site. This example shows that the frequency use factor is 1 (N=1) and that the overlap of the radio channels results in an increased interference level in the overlapping area.
What is I and J in frequency reuse?
Cluster patterns and the corresponding frequencies are re-used in a regular pattern over the entire service area. Frequency reuse plan for C = 3, with hexagonal cells. ( i=1, j =1) Frequency reuse plan for C = 7 (i=2, j =1). The total bandwidth for the system is C times the bandwidth occupied by a single cell.
What will be the co-channel reuse ratio of frequency reuse factor N is 12?
N. Using equation (2.3), the next possible value of N is 12, (i= j = 2). The corresponding co-channel ratio is given by equation (2.4) as D/R = 6.0.
Which is better a low reuse factor or a high reuse factor?
Answer. Answer: The lowest reuse factor (K = 1) maximizes capacity; but this has to be balanced with interference considerations: indeed a higher reuse factor (K = 3, 4, 7, or higher) provides more distance between cells using the same frequency, which lowers interferences.
What is co-channel reuse ratio?
The channel reuse ratio in a cellular system is defined as the ratio of the distance between cells using related channels to the cell radius . If a pair of terminals in two cells are using the same channel, the ratio is called the cochannel reuse ratio (CRR).
What is the frequency reuse factor in CDMA Mcq?
Explanation: The amount of out-of-cell interference determines the frequency reuse factor, f, of a CDMA cellular system. Ideally, each cell shares the same frequency and the maximum possible value of f (f=1) is achieved.
What is i and j in cluster size?
For hexagonal cells, i.e., with ‘honeycomb’ cell lay-outs commonly used in mobile radio, possible cluster sizes are C = i2 + ij + j2, with integer i and j (C = 1, 3, 4, 7, 9.). Integers i and j determine the relative location of co-channel cells.
What will be the co-channel reuse ratio for a system where I j 2?
What is the co-channel reuse value for a cluster size of 12?
(c) For N = 12, total number of channels available per cell = 660/12 ≈ 55 channels.
How is GSM calculated?
The average weight of the specimen is 1.600 grams per 100 square centimeters. Now convert the weight into grams per square meters by multiplying the average weight by 100. Therefore, sample fabric GSM is 1.60 X 100 = 160 GSM.
Why is frequency reuse important?
Frequency reuse improve the spectral efficiency and signal Quality (QoS). Frequency reuse classical scheme proposed for GSM systems offers a protection against interference.
What is the advantage of using frequency reuse?
Explanation: Frequency reuse is a technique of reusing frequencies and channels within a cellular system to improve capacity and spectral efficiency.
What is frequency reuse and co-channel reuse?
If a pair of terminals in two cells are using the same channel, the ratio is called the co-channel reuse ratio (CRR). The frequency uses distance, D, (i.e., the distance between the two adjacent co-channel cells of radius R) is related to the number of cells in a frequency reuse pattern K.
IS-95 has a frequency reuse factor of MCQ?
In an IS-95 system, the frequency-reuse factor is normally _____. 128….Online Test.
| 125. | IS-95 uses the ISM _______band. |
|---|---|
| a. | 800-MHz |
| b. | 900-MHz |
| c. | 1900-MHz |
| d. | either (a) or (c) |
What is the chip rate of W-CDMA?
3.84 Mcps
What is the chip rate of W-CDMA? Explanation: W-CDMA uses a chip rate of 3.84 Mcps. Chip rate is the product of symbol rate and spreading factor.
What is the co-channel reuse ratio?
What is the relation between co-channel reuse ratio & cluster size?
Signal-to-interference ratio
| Co-channel Interference | ||
|---|---|---|
| Equation | Variable | |
| cluster size | N | |
| path loss exponent (meas) | n | |
| 3.4 | co-channel reuse ratio | sqrt(3N) |
What are GSM types?
The GSM network is divided into three major systems: the switching system (SS), the base station system (BSS), and the operation and support system (OSS).
What is 250 GSM?
250 gsm paper is commonly used for greetings cards, invitations and booklet/brochure covers. 300 gsm/350 gsm. Thick board stock, ideal for book covers, business cards etc. This is our thickest available paper stock.