Sectorization Gain in CDMA

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

Power Control Inaccuracy in CDMA

CDMA means all depedancy on power control here i write on Power Control Inaccuracy in cdma. Traffic capacity of CDMA systems is increased by implementing an appropriate power control scheme…

Conventional Blocking Analysis for CDMA

Conventional Blocking formula and its Analysis for cdma. In AMPS and TDMA systems, voice/traffic channels are assigned to users as long as they are available. Given the required offered traffic,…

Forward Channel Structure in CDMA

Here i write down on how Forward Channel works in CDMA ? and its Structure. The following figure shows an example of the code channels transmitted by a base station….

Reverse Channel Structure in CDMA

The Reverse CDMA Channel is composed of Access Channels and Reverse Traffic Channels. These channels share the same CDMA frequency assignment. Each Traffic Channel is identified by a distinct user…

How Header Compression in LTE

One of the main functions of the PDCP header compression is using Header Compression (ROHC) robust protocol defined by IETF (Internet Engineering Task Force) . In LTE, header compression is…

Functions and Architecture of PDCP in LTE

PDCP layer performs the following functions: 1. Header compression and decompression plane of the user data; 2. Security features: encryption and deciphering the user plane and control plane data; the…

How UE Access Restrictions to Cell

The UE carried out a restriction of access check during connection establishment. This function provides a means of controlling traffic load from the EU. There are separate facilities for control…

Frequency or RAT Evaluation for LTE UE

E-UTRAN configures a priority for all applicable frequencies for each RAT. In addition to the priorities of specific cells that are optionally provided by SI, E-UTRAN can assign specific EU…

How Cell Selection in GSM

Once the mobile is switched on and the registered home PLMN was selected (e.x. SMART), it will next search for a BCCH frequency list, stored in its memory or in…

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