Simulation and Analysis of Phase Noise Distortion in RF Transceiver of IEEE 802.11 a WLAN Bridge System

In this paper, simulation and analysis of phase noise distortion in radio frequency (RF) transceiver of Wireless Local Area Network (WLAN) bridge system are presented. It is focused on the oscillator in RF transmitter and RF receiver in the transceiver. The effect of phase noise on the constellation error of RF transmitter and the receiver sensitivity of RF receiver is analysed based on IEEE 802.11a standard. By this way, these analyses can be applied in early stage of oscillator design for RF transceiver of IEEE 802.11a WLAN system. RF behavioural models and Agilent Ptolemy simulator are used in Advanced Design System (ADS) software to perform simulation of constellation error and receiver sensitivity. As a result, it is found that the phase noise of oscillator should not be higher than -120 dbc/Hz at 1 MHz offset in order to optimise the receiver sensitivity and also to minimising constellation error in RF transceiver of IEEE 802.11a standard