What does EC IO stand for?
Energy per chip to Interference power ratio
Ec/Io stands for Energy per chip to Interference power ratio. It is measured before despreading.
What is EC in CDMA?
Network optimization Ec/Io is a notation used to represent a dimensionless ratio of the average power of a channel, typically the pilot channel, to the total signal power. It is expressed in dB.
What is EC IO in 3G?
The EC/IO is a measure of the quality/cleanliness of the signal from the tower to the modem and indicates the signal-to noise ratio (the ratio of the received/good energy to the interference/bad energy). More information on EC/IO values can be found in the 3G section of the Mobile Signal Strength Recommendations page.
What is a good 4G LTE signal strength?
For a reliable connection: The 4G LTE Signal should be greater than -58 dBm (e.g. -32 dBm). A value of -96 dBm indicates no signal. If the signal is between -82 dBm and -96 dBm, move the device to an alternate location (preferably an outdoor location).
What can cause poor Rsrq?
Poor RSRQ reasons:
- Bad RSRP.
- Overshooting from neighbor cell.
- Less intersector seperation of the same site.(65deg is good) 4.High utilization of the cell( If the utilization increases the RSSI increases which degrade the RSRQ).
What is Sinr in WiFi?
In information theory and telecommunication engineering, the signal-to-interference-plus-noise ratio (SINR) (also known as the signal-to-noise-plus-interference ratio (SNIR)) is a quantity used to give theoretical upper bounds on channel capacity (or the rate of information transfer) in wireless communication systems …
Why is Sinr bad in LTE?
SINR = -1.8 dB In this case, the signal quality is actually very poor. This could be due to the device being some distance away from the LTE transmitter. It’s also possible that something is interfering with the signal, such as a building or other obstructions between the device and the tower.
Why is CDMA more efficient?
CDMA technology claims that its bandwidth is thirteen times efficient than TDMA and forty times efficient than analog systems. CDMA also have better security and higher data and voice transmission quality because of the spread spectrum technology it uses, which has increased resistance to multipath distortion.
What is Rscp 3g?
From Wikipedia, the free encyclopedia. In the UMTS cellular communication system, received signal code power (RSCP) denotes the power measured by a receiver on a particular physical communication channel.
What values of signal strength are used in CDMA network?
3G (WCDMA, TDSCDMA, CDMA, EVDO, CDMA-EVDO)
| RSCP | Signal strength |
|---|---|
| -75 to -60 | Good |
| -85 to -75 | Fair |
| -95 to -85 | Poor |
| -124 to -95 | Very poor |
Which is required for higher combined Ec / Io?
Higher combined Ec/Io, lower traffic channel Ec/Io is required and more BTS power is conserved. Ec/Io is a notation used to represent a dimensionless ratio of the average power of a channel, typically the pilot channel, to the total signal power. It is expressed in dB.
Which is the best description of Ec / Io optimization?
Ec/Io optimization. Higher combined Ec/Io, lower traffic channel Ec/Io is required and more BTS power is conserved. Ec/Io is a notation used to represent a dimensionless ratio of the average power of a channel, typically the pilot channel, to the total signal power. It is expressed in dB.
Which is the enhanced variable rate codec for CDMA?
Enhanced Variable Rate Codec B ( EVRC-B) is a speech codec used by CDMA networks. EVRC-B is an enhancement to EVRC and compresses each 20 milliseconds of 8000 Hz, 16-bit sampled speech input into output frames of one of the four different sizes: Rate 1 – 171 bits, Rate 1/2 – 80 bits, Rate 1/4 – 40 bits, Rate 1/8 – 16 bits.
What is the Ec / Io ratio in dB?
Ec/Io is a notation used to represent a dimensionless ratio of the average power of a channel, typically the pilot channel, to the total signal power. It is expressed in dB.