Tag Archives: cdma planning


Interference Margin for CDMA

In determining RF coverage in CDMA systems, the effect of interference generated from the serving cell as well as the neighboring cells must be considered, this is in contrast to

Soft Handoff Gain for CDMA

Soft handoff is the term that is normally associated with the fact that a CDMA system makes a connection to a target cell prior to releasing (breaking) from the source

Defination and work of Eb/No in CDMA

Eb/No corresponds to energy per bit over interference plus noise density for a given target FER (typical FER target is 1%). In digital communications, it is customary to designate one-sided

CDMA Forward Channel Carrier Power

CDMA forward channel carrier power varies greatly depending on how many traffic channels are in use, the characteristics of the users voices, the Forward Power Control settings as requested by

CDMA Variable Rate Speech Coder

CDMA takes advantage of quiet times during speech to raise capacity.  A variable rate vocoder is used; for the original vocoder the channel is a 9,600 bps when the user

Why Closed Loop Power Control in CDMA

Closed loop power control is used to allow the power from the mobile unit to deviate from the nominal as set by open loop control. This is done with a

Open Loop Power Control in CDMA

The Open Loop Power Control require in cdma due to following reason. Assumes Loss is Similar on Forward paths and Reverse Paths Receive Power + Transmit Power = -73 All

How Forward Error Protection in CDMA

Uses Half-Rate Convolutional Encoder Outputs Two Bits of Encoded Data for Every Input Bit Unlike many digital cellular systems, CDMA provides powerful error correction to all voice data bits. This

Sectorization Gain in CDMA

Sectorization gain can be somewhat of a misleading term. One could think of the  sectorization gain as more of a reduction factor. For an omni site, the sectorization gain is