Femtocell interference | RF interference optimization in femtocell network

This page on Femtocell tutorial covers issues in femtocell interference. It mentions interference mitigation and optimization techniques used in femtocell network.

We will see the procedure by which co-channel interference reduction and coverage extension can be achieved in the femtocell network.

The HeNB transmit power has two types pilot power and traffic power. The pilot power is used for channel estimation and cell selection. The traffic power is used for data and signalling information transmission.

The pilot power can give us coverage of the femtocell. The more power gives us larger coverage and less power gives us smaller coverage. When pilot power is more, less power will be left for traffic application. This results into reduction in femtocell throughput. Moreover high pilot power leads to interference to non CSG users. Hence

Co-Channel Interference mitigation

Co channel interference is the interference caused when two wireless transmitters are using the same channel frequency. In femtocell system, it uses the same frequency as used by macro cell. Refer RF interference for more information. Femtocell transmit power is adjusted to mitigate the effect of co-channel interference.


Moreover femtocell is located in such places so that the signal transmitted by them may not interfere the macrocell signal present outside. Also it should not affect the nearby femtocells if they exist. Hence location is very important in femtocell deployment.

Femtocell tutorial related links

Femtocell Tutorial  Femtocell Architecture  Femtocell Testing  LTE Femtocell Manufacturers  Femtocell vs WiFi  Femtocell types  Femtocell interference  timing and synchronization  Handover 

RF Wireless Tutorials

Refer following RF and wireless tutorials in addition to femtocell tutorial described on this page.
GSM  TD-SCDMA  wimax  LTE  UMTS  GPRS  CDMA  SCADA  WLAN  802.11ac  802.11ad  GPS  Zigbee  z-wave  Bluetooth  UWB  IoT  T&M  satellite  Antenna  RADAR  RFID