Semiblind direct equalisation using mutually referenced equalisers

Wireless ad-hoc networks must accept the presence of unsynchronized interfering signals. To identify the user of interest, some form of training must be used, e.g., colour code or a short training burst. Instead of a single block of training, it is better to have the training symbols dispersed over the packet. We propose a semi-blind algorithm for the separation and equalization of the packet of the user of interest, received over multi-path fading channels. The algorithm is based on a direct equaliser approach, combined with ideas from blind “mutually referenced equalisers” (MRE).