Pre-filter Design for WLAN Receivers with Packet Binary Convolutional Coding (PBCC) Transmission
Uo H · Microcomputer Information · 2007
In WLAN systems that adopt Packet Binary Convolutional Coding(PBCC)modulation,reduced-state equalization algorithms are generally used to resist the impact of non ideal channel characteristics.Such equalizers have high performance,only if the overall discrete time system to be equalized is minimum phase.A pre-filter is generally inserted before the equalizer to transform the chan-nel impulse response into its minimum phase equivalent.The principle of the pre-filter is described and the design method is given.Computer simulation results indicate that robust receiver performance can be obtained when the pre-filter and reduced-state equalizer are used together.