WHY RF OPTIMIZATION - Suitable propagation Model-Path loss model - Traffic capacity – Hot Spot - Coverage both indoor & outdoor - Balanced between up link - Down link - Co located transmitters & receivers - Co located w/ other antennas INTERFERENCE : - Adjacent channel interference - Co channel interference - Inter-modulation - Transmitter EIRP to low - Receiver sensitivity - Voice quality - BER - Man made structures -Dynamic - Growing up - City - Town - Emerging data & video streaming - Transmitter RF leakages LINEARITY OF RF POWER AMPLIFIER : - Spurious - Spectral
RF OPTIMIZATION FOR BOTH TRANSMITTER – RECEIVER
- Transmitter optimization - Increase EIRP & RF power output - Improve transmitter stability - Improve transmitter noise rejection - Antennas height & Spacing – for optimum space diversity INTERCONNECTION ANTENNA – FEEDER – JUMPER : - Obtain optimum lowest VSWR - Antennas RF isolation
RECEIVER OPTIMIZATION
- Remove - Interference & Intermodulation. - Improve receiver system sensitivity & selectivity - Improve rejection of external noise & unwanted signals CONVENTIONAL – TRUNKING REPEATER : - Optimize coverage both down link - up link - Repeaters RF optimization, TX and RX - Indoor coverage - Increase repeater duty cycle - Increase HT – Portables talk time PRODCUT KNOWLEDGE : - Motorola - Nokia - Icom - Kenwood - Yaesu - Ericsson - MDS – LEDR 400s